Neuromancer : 151 주차

일시 : 2016.07.16 (151주차 스터디 진행)

모임명 : neuromancer.kr

장소 : 토즈 서현점

장소지원 : 공개 소프트웨어 개발자 커뮤니티 지원 프로그램

참여인원 : 3명

============

151주차 진도

ᇂ151차 시작 위치
- start_kernel 1 ~/init/main.c
- proc_root_init 937 ~/init/main.c
- proc_sys_init 609 ~/fs/proc/root.c
- sysctl_init 2488 return sysctl_init();
- register_sysctl_table 1696 ~/kernel/sysctl.c
- register_sysctl_paths 2330 return register_sysctl_paths(null_path, table);
- __register_sysctl_paths 2309 return __register_sysctl_paths(&sysctl_table_root.default_set,
- register_leaf_sysctl_tables 2272 if (register_leaf_sysctl_tables(new_path, pos, &subheader,
- __register_sysctl_table 2121 header = __register_sysctl_table(set, path, files);
- insert_header 1885 if (insert_header(dir, header))

151 주차 함수 호출 구조

call: start_kernel()

lockdep_init()
smp_setup_processor_id()
debug_objects_early_init()
boot_init_stack_canary()
cgroup_init_early()
local_irq_disable()
boot_cpu_init()
page_address_init()
pr_notice()
setup_arch()
mm_init_owner()
mm_init_cpumask()
setup_command_line
build_all_zonelists()
page_alloc_init()
pr_notice()
parse_early_param()
parse_args()
jump_label_init()
setup_log_buf()
pidhash_init()
vfs_caches_init_early()
sort_main_extable()
trap_init()
mm_init()
sched_init()
preempt_disable()
irqs_disabled()
local_irq_disabled()
idr_init_cache()
rcu_init()
tick_nohz_init()
contect_tracking_init()
radix_tree_init()
early_irq_init()
init_IRQ()
tick_init()
init_timers()
hrtimers_init()
softirq_init()
timekeeping_init()
time_init()
sched_clock_postinit()
pref_event_init()
profile_init()
call_function_init()
irqs_disabled()
local_irq_enabled()
kmem_cache_init_late()
console_init()
lockdep_init()
lockdep_info()
locking_selftest()
virt_to_page()
page_to_pfn()
page_cgroup_init()
debug_objects_mem_init()
kmemleak_init()
setup_per_cpu_pageset()
numa_policy_init()
sched_clock_init()
calibrate_delay()
pidmap_init()
anon_vma_init()
thread_info_cache_init()
cred_init()
fork_init()
proc_caches_init()
buffer_init()
key_init()
security_init()
dbg_late_init()
vfs_caches_init()
signals_init()
page_writeback_init()
proc_root_init()

call: proc_root_init()

proc_init_inodecache()
register_filesystem()
proc_self_init()
proc_symlink()
proc_net_init()
proc_mkdir("sysvipc", NULL);
proc_mkdir("fs", NULL);
proc_mkdir("driver", NULL);
proc_mkdir("fs/nfsd", NULL);
proc_mkdir("openprom", NULL);
proc_tty_init()
proc_device_tree_init();
proc_mkdir"bus", NULL);
proc_sys_init()

call: proc_sys_init()

proc_mkdir("sys", NULL);
sysctl_init();

call: sysctl_init()

register_sysctl_table()

call: register_sysctl_table()

register_sysctl_paths()

call: register_sysctl_paths()

__register_sysctl_paths()

call: __register_sysctl_paths()

count_subheaders()
kmalloc(): PATH_MAX: 4096
kzalloc(): header: 256
register_leaf_sysctl_table()

call: register_leaf_sysctl_table()

__register_sysctl_table()

call: __register_sysctl_table()

kzalloc(768, GFP_KERNEL: 0xD0): kmem_cache#25-oX
init_header()
sysctl_check_table()
spin_lock()
- // &sysctl_lock을 이용한 spin lock 수행
- // &set->dir: &(&sysctl_table_root.default_set)->dir
- dir = &set->dir;
- // dir: &(&sysctl_table_root.default_set)->dir
- /* Reference moved down the diretory tree get_subdir */
- // dir->header.nreg: (&(&sysctl_table_root.default_set)->dir)->header.nreg: 1
- dir->header.nreg++;
- // dir->header.nreg: (&(&sysctl_table_root.default_set)->dir)->header.nreg: 2
spin_unlock()
get_subdir()
spin_lock()
insert_keaher()

call: insert_keader()

insert_links()
insert_entry()

return: __register_sysctl_table()

kzalloc(768, GFP_KERNEL: 0xD0): kmem_cache#25-oX
init_header()
sysctl_check_table()
spin_lock()
- // &sysctl_lock을 이용한 spin lock 수행
- // &set->dir: &(&sysctl_table_root.default_set)->dir
- dir = &set->dir;
- // dir: &(&sysctl_table_root.default_set)->dir
- /* Reference moved down the diretory tree get_subdir */
- // dir->header.nreg: (&(&sysctl_table_root.default_set)->dir)->header.nreg: 1
- dir->header.nreg++;
- // dir->header.nreg: (&(&sysctl_table_root.default_set)->dir)->header.nreg: 2
spin_unlock()
get_subdir()
spin_lock()
insert_keaher()
drop_sysctl_table()

call: drop_sysctl_table()

start_kernel()

call: start_kernel()

proc_root_init()

asmlinkage void __init start_kernel(void)
{
	char * command_line;
	extern const struct kernel_param __start___param[], __stop___param[];
	// ATAG,DTB 정보로 사용

...

    proc_caches_init();
	// sighand_struct, signal_struct, files_struct, fs_struct, mm_struct, vm_area_struct, nsproxy
	// 를 사용하기 위한 kmem_cache 할당자 및 percpu list 초기화 수행

...

	vfs_caches_init(totalram_pages);
	// virtual file system을 위한 names, dentry, inode, filp, mount cache 생성 후
	// file system 을 위한 초기화 수행 및 mount 수행, block, char dev 사용을 위한 초기화 수행

	signals_init();
	// signal을 사용하기 위한 kmem_cache 를 생성

	/* rootfs populating might need page-writeback */
	page_writeback_init();
	// page writeback을 위한 global_dirty_limit, ratelimit_pages 값을 초기화 수행

#ifdef CONFIG_PROC_FS // CONFIG_PROC_FS=y
	proc_root_init();

proc_root_init()

calll: start_kernel()

proc_root_init()

call: call_root_init()

// ARM10C 20160604
void __init proc_root_init(void)
{
	int err;

	proc_init_inodecache();

	// proc_init_inodecache 에서 한일:
	// struct proc_inode 크기 만큼의 메모리를 할당항는 kmem_cache 할당자를 생성함
	// proc_inode_cachep: kmem_cache#n#28 (struct proc_inode)

	// register_filesystem(&proc_fs_type): 0
	err = register_filesystem(&proc_fs_type);
	// err: 0

	// register_filesystem에서 한일:
	// (&bd_type)->next: &proc_fs_type
	//
	// file system 연결 결과
	// file_systems: sysfs_fs_type -> rootfs_fs_type -> shmem_fs_type -> bd_type -> proc_fs_type

	// err: 0
	if (err)
		return;

	proc_self_init();

	// proc_self_init 에서 한일:
	// idr_layer_cache를 사용하여 struct idr_layer 의 메모리 kmem_cache#21-oX를 2 개를 할당 받음
	//
	// (&(&proc_inum_ida)->idr)->id_free 이 idr object new 1번을 가르킴
	// |
	// |-> ---------------------------------------------------------------------------------------------------------------------------
	//     | idr object new 1         | idr object new 0     | idr object 6         | idr object 5         | .... | idr object 0     |
	//     ---------------------------------------------------------------------------------------------------------------------------
	//     | ary[0]: idr object new 0 | ary[0]: idr object 6 | ary[0]: idr object 5 | ary[0]: idr object 4 | .... | ary[0]: NULL     |
	//     ---------------------------------------------------------------------------------------------------------------------------
	//
	// (&(&proc_inum_ida)->idr)->id_free: kmem_cache#21-oX (idr object new 1)
	// (&(&proc_inum_ida)->idr)->id_free_cnt: 8
	//
	// (&(&proc_inum_ida)->idr)->top: kmem_cache#21-oX (struct idr_layer) (idr object 8)
	// (&(&proc_inum_ida)->idr)->layers: 1
	// (&(&proc_inum_ida)->idr)->id_free: (idr object new 0)
	// (&(&proc_inum_ida)->idr)->id_free_cnt: 7
	//
	// (kmem_cache#27-oX (struct ida_bitmap))->bitmap 의 1 bit를 1로 set 수행
	// (kmem_cache#27-oX (struct ida_bitmap))->nr_busy: 2
	//
	// kmem_cache인 kmem_cache#21 에서 할당한 object인 kmem_cache#21-oX (idr object new 1) 의 memory 공간을 반환함
	//
	// self_inum: 0xF0000001

	// proc_symlink("mounts", NULL, "self/mounts"): kmem_cache#29-oX (struct proc_dir_entry)
	proc_symlink("mounts", NULL, "self/mounts");

	// proc_symlink 에서 한일:
	// struct proc_dir_entry 만큼 메모리를 할당 받음 kmem_cache#29-oX (struct proc_dir_entry)
	//
	// (kmem_cache#29-oX (struct proc_dir_entry))->name: "mounts"
	// (kmem_cache#29-oX (struct proc_dir_entry))->namelen: 6
	// (kmem_cache#29-oX (struct proc_dir_entry))->mode: 0120777
	// (kmem_cache#29-oX (struct proc_dir_entry))->nlink: 1
	// (&(kmem_cache#29-oX (struct proc_dir_entry))->count)->counter: 1
	// &(kmem_cache#29-oX (struct proc_dir_entry))->pde_unload_lock을 이용한 spin lock 초기화 수행
	// ((&(kmem_cache#29-oX (struct proc_dir_entry))->pde_unload_lock)->rlock)->raw_lock: { { 0 } }
	// ((&(kmem_cache#29-oX (struct proc_dir_entry))->pde_unload_lock)->rlock)->magic: 0xdead4ead
	// ((&(kmem_cache#29-oX (struct proc_dir_entry))->pde_unload_lock)->rlock)->owner: 0xffffffff
	// ((&(kmem_cache#29-oX (struct proc_dir_entry))->pde_unload_lock)->rlock)->owner_cpu: 0xffffffff
	// &(kmem_cache#29-oX (struct proc_dir_entry))->pde_openers->i_sb_list->next: &(kmem_cache#29-oX (struct proc_dir_entry))->pde_openers->i_sb_list
	// &(kmem_cache#29-oX (struct proc_dir_entry))->pde_openers->i_sb_list->prev: &(kmem_cache#29-oX (struct proc_dir_entry))->pde_openers->i_sb_list
	//
	// parent: &proc_root
	//
	// (kmem_cache#29-oX (struct proc_dir_entry))->data: kmem_cache#30-oX: "self/mounts"
	//
	// idr_layer_cache를 사용하여 struct idr_layer 의 메모리 kmem_cache#21-oX를 1 개를 할당 받음
	//
	// (&(&proc_inum_ida)->idr)->id_free 이 idr object new 2번을 가르킴
	// |
	// |-> ---------------------------------------------------------------------------------------------------------------------------
	//     | idr object new 2         | idr object new 0     | idr object 6         | idr object 5         | .... | idr object 0     |
	//     ---------------------------------------------------------------------------------------------------------------------------
	//     | ary[0]: idr object new 0 | ary[0]: idr object 6 | ary[0]: idr object 5 | ary[0]: idr object 4 | .... | ary[0]: NULL     |
	//     ---------------------------------------------------------------------------------------------------------------------------
	//
	// (&(&proc_inum_ida)->idr)->id_free: kmem_cache#21-oX (idr object new 2)
	// (&(&proc_inum_ida)->idr)->id_free_cnt: 8
	//
	// (&(&proc_inum_ida)->idr)->top: kmem_cache#21-oX (struct idr_layer) (idr object 8)
	// (&(&proc_inum_ida)->idr)->layers: 1
	// (&(&proc_inum_ida)->idr)->id_free: (idr object new 0)
	// (&(&proc_inum_ida)->idr)->id_free_cnt: 7
	//
	// (kmem_cache#27-oX (struct ida_bitmap))->bitmap 의 2 bit를 1로 set 수행
	// (kmem_cache#27-oX (struct ida_bitmap))->nr_busy: 3
	//
	// kmem_cache인 kmem_cache#21 에서 할당한 object인 kmem_cache#21-oX (idr object new 2) 의 memory 공간을 반환함
	//
	// (kmem_cache#29-oX (struct proc_dir_entry))->low_ino: 0xF0000002
	// (kmem_cache#29-oX (struct proc_dir_entry))->proc_iops: &proc_link_inode_operations
	// (kmem_cache#29-oX (struct proc_dir_entry))->next: NULL
	// (kmem_cache#29-oX (struct proc_dir_entry))->parent: &proc_root
	//
	// (&proc_root)->subdir: kmem_cache#29-oX (struct proc_dir_entry)

	// proc_net_init(): 0
	proc_net_init();

	// proc_net_init 에서 한일:
	// struct proc_dir_entry 만큼 메모리를 할당 받음 kmem_cache#29-oX (struct proc_dir_entry)
	//
	// (kmem_cache#29-oX (struct proc_dir_entry))->name: "net"
	// (kmem_cache#29-oX (struct proc_dir_entry))->namelen: 3
	// (kmem_cache#29-oX (struct proc_dir_entry))->mode: 0120777
	// (kmem_cache#29-oX (struct proc_dir_entry))->nlink: 1
	// (&(kmem_cache#29-oX (struct proc_dir_entry))->count)->counter: 1
	// &(kmem_cache#29-oX (struct proc_dir_entry))->pde_unload_lock을 이용한 spin lock 초기화 수행
	// ((&(kmem_cache#29-oX (struct proc_dir_entry))->pde_unload_lock)->rlock)->raw_lock: { { 0 } }
	// ((&(kmem_cache#29-oX (struct proc_dir_entry))->pde_unload_lock)->rlock)->magic: 0xdead4ead
	// ((&(kmem_cache#29-oX (struct proc_dir_entry))->pde_unload_lock)->rlock)->owner: 0xffffffff
	// ((&(kmem_cache#29-oX (struct proc_dir_entry))->pde_unload_lock)->rlock)->owner_cpu: 0xffffffff
	// &(kmem_cache#29-oX (struct proc_dir_entry))->pde_openers->i_sb_list->next: &(kmem_cache#29-oX (struct proc_dir_entry))->pde_openers->i_sb_list
	// &(kmem_cache#29-oX (struct proc_dir_entry))->pde_openers->i_sb_list->prev: &(kmem_cache#29-oX (struct proc_dir_entry))->pde_openers->i_sb_list
	//
	// parent: &proc_root
	//
	// (kmem_cache#29-oX (struct proc_dir_entry))->data: kmem_cache#30-oX: "self/net"
	//
	// idr_layer_cache를 사용하여 struct idr_layer 의 메모리 kmem_cache#21-oX를 1 개를 할당 받음
	//
	// (&(&proc_inum_ida)->idr)->id_free 이 idr object new 3번을 가르킴
	// |
	// |-> ---------------------------------------------------------------------------------------------------------------------------
	//     | idr object new 3         | idr object new 0     | idr object 6         | idr object 5         | .... | idr object 0     |
	//     ---------------------------------------------------------------------------------------------------------------------------
	//     | ary[0]: idr object new 0 | ary[0]: idr object 6 | ary[0]: idr object 5 | ary[0]: idr object 4 | .... | ary[0]: NULL     |
	//     ---------------------------------------------------------------------------------------------------------------------------
	//
	// (&(&proc_inum_ida)->idr)->id_free: kmem_cache#21-oX (idr object new 3)
	// (&(&proc_inum_ida)->idr)->id_free_cnt: 8
	//
	// (&(&proc_inum_ida)->idr)->top: kmem_cache#21-oX (struct idr_layer) (idr object 8)
	// (&(&proc_inum_ida)->idr)->layers: 1
	// (&(&proc_inum_ida)->idr)->id_free: (idr object new 0)
	// (&(&proc_inum_ida)->idr)->id_free_cnt: 7
	//
	// (kmem_cache#27-oX (struct ida_bitmap))->bitmap 의 3 bit를 1로 set 수행
	// (kmem_cache#27-oX (struct ida_bitmap))->nr_busy: 4
	//
	// kmem_cache인 kmem_cache#21 에서 할당한 object인 kmem_cache#21-oX (idr object new 3) 의 memory 공간을 반환함
	//
	// (kmem_cache#29-oX (struct proc_dir_entry))->low_ino: 0xF0000003
	// (kmem_cache#29-oX (struct proc_dir_entry))->proc_iops: &proc_link_inode_operations
	// (kmem_cache#29-oX (struct proc_dir_entry))->next: NULL
	// (kmem_cache#29-oX (struct proc_dir_entry))->parent: &proc_root
	//
	// (&proc_root)->subdir: kmem_cache#29-oX (struct proc_dir_entry)
	//
	// list head 인 &pernet_list 에 &(&proc_net_ns_ops)->list 을 tail로 추가함

#ifdef CONFIG_SYSVIPC // CONFIG_SYSVIPC=y
	// proc_mkdir("sysvipc", NULL): kmem_cache#29-oX (struct proc_dir_entry)
	proc_mkdir("sysvipc", NULL);

	// proc_mkdir 에서 한일:
	// struct proc_dir_entry 만큼 메모리를 할당 받음 kmem_cache#29-oX (struct proc_dir_entry)
	//
	// (kmem_cache#29-oX (struct proc_dir_entry))->name: "sysvipc"
	// (kmem_cache#29-oX (struct proc_dir_entry))->namelen: 7
	// (kmem_cache#29-oX (struct proc_dir_entry))->mode: 0040555
	// (kmem_cache#29-oX (struct proc_dir_entry))->nlink: 2
	// (&(kmem_cache#29-oX (struct proc_dir_entry))->count)->counter: 1
	// &(kmem_cache#29-oX (struct proc_dir_entry))->pde_unload_lock을 이용한 spin lock 초기화 수행
	// ((&(kmem_cache#29-oX (struct proc_dir_entry))->pde_unload_lock)->rlock)->raw_lock: { { 0 } }
	// ((&(kmem_cache#29-oX (struct proc_dir_entry))->pde_unload_lock)->rlock)->magic: 0xdead4ead
	// ((&(kmem_cache#29-oX (struct proc_dir_entry))->pde_unload_lock)->rlock)->owner: 0xffffffff
	// ((&(kmem_cache#29-oX (struct proc_dir_entry))->pde_unload_lock)->rlock)->owner_cpu: 0xffffffff
	// &(kmem_cache#29-oX (struct proc_dir_entry))->pde_openers->i_sb_list->next: &(kmem_cache#29-oX (struct proc_dir_entry))->pde_openers->i_sb_list
	// &(kmem_cache#29-oX (struct proc_dir_entry))->pde_openers->i_sb_list->prev: &(kmem_cache#29-oX (struct proc_dir_entry))->pde_openers->i_sb_list
	//
	// parent: &proc_root
#endif
	// proc_mkdir("fs", NULL): kmem_cache#29-oX (struct proc_dir_entry)
	proc_mkdir("fs", NULL);

	// proc_mkdir 에서 한일:
	// struct proc_dir_entry 만큼 메모리를 할당 받음 kmem_cache#29-oX (struct proc_dir_entry)
	//
	// (kmem_cache#29-oX (struct proc_dir_entry))->name: "fs"
	// (kmem_cache#29-oX (struct proc_dir_entry))->namelen: 2
	// (kmem_cache#29-oX (struct proc_dir_entry))->mode: 0040555
	// (kmem_cache#29-oX (struct proc_dir_entry))->nlink: 2
	// (&(kmem_cache#29-oX (struct proc_dir_entry))->count)->counter: 1
	// &(kmem_cache#29-oX (struct proc_dir_entry))->pde_unload_lock을 이용한 spin lock 초기화 수행
	// ((&(kmem_cache#29-oX (struct proc_dir_entry))->pde_unload_lock)->rlock)->raw_lock: { { 0 } }
	// ((&(kmem_cache#29-oX (struct proc_dir_entry))->pde_unload_lock)->rlock)->magic: 0xdead4ead
	// ((&(kmem_cache#29-oX (struct proc_dir_entry))->pde_unload_lock)->rlock)->owner: 0xffffffff
	// ((&(kmem_cache#29-oX (struct proc_dir_entry))->pde_unload_lock)->rlock)->owner_cpu: 0xffffffff
	// &(kmem_cache#29-oX (struct proc_dir_entry))->pde_openers->i_sb_list->next: &(kmem_cache#29-oX (struct proc_dir_entry))->pde_openers->i_sb_list
	// &(kmem_cache#29-oX (struct proc_dir_entry))->pde_openers->i_sb_list->prev: &(kmem_cache#29-oX (struct proc_dir_entry))->pde_openers->i_sb_list
	//
	// parent: &proc_root

	// proc_mkdir("driver", NULL): kmem_cache#29-oX (struct proc_dir_entry)
	proc_mkdir("driver", NULL);

	// proc_mkdir 에서 한일:
	// struct proc_dir_entry 만큼 메모리를 할당 받음 kmem_cache#29-oX (struct proc_dir_entry)
	//
	// (kmem_cache#29-oX (struct proc_dir_entry))->name: "driver"
	// (kmem_cache#29-oX (struct proc_dir_entry))->namelen: 6
	// (kmem_cache#29-oX (struct proc_dir_entry))->mode: 0040555
	// (kmem_cache#29-oX (struct proc_dir_entry))->nlink: 2
	// (&(kmem_cache#29-oX (struct proc_dir_entry))->count)->counter: 1
	// &(kmem_cache#29-oX (struct proc_dir_entry))->pde_unload_lock을 이용한 spin lock 초기화 수행
	// ((&(kmem_cache#29-oX (struct proc_dir_entry))->pde_unload_lock)->rlock)->raw_lock: { { 0 } }
	// ((&(kmem_cache#29-oX (struct proc_dir_entry))->pde_unload_lock)->rlock)->magic: 0xdead4ead
	// ((&(kmem_cache#29-oX (struct proc_dir_entry))->pde_unload_lock)->rlock)->owner: 0xffffffff
	// ((&(kmem_cache#29-oX (struct proc_dir_entry))->pde_unload_lock)->rlock)->owner_cpu: 0xffffffff
	// &(kmem_cache#29-oX (struct proc_dir_entry))->pde_openers->i_sb_list->next: &(kmem_cache#29-oX (struct proc_dir_entry))->pde_openers->i_sb_list
	// &(kmem_cache#29-oX (struct proc_dir_entry))->pde_openers->i_sb_list->prev: &(kmem_cache#29-oX (struct proc_dir_entry))->pde_openers->i_sb_list
	//
	// parent: &proc_root

	// proc_mkdir("fs/nfsd", NULL): kmem_cache#29-oX (struct proc_dir_entry)
	proc_mkdir("fs/nfsd", NULL); /* somewhere for the nfsd filesystem to be mounted */

	// proc_mkdir 에서 한일:
	// struct proc_dir_entry 만큼 메모리를 할당 받음 kmem_cache#29-oX (struct proc_dir_entry)
	//
	// (kmem_cache#29-oX (struct proc_dir_entry))->name: "fs/nfsd"
	// (kmem_cache#29-oX (struct proc_dir_entry))->namelen: 7
	// (kmem_cache#29-oX (struct proc_dir_entry))->mode: 0040555
	// (kmem_cache#29-oX (struct proc_dir_entry))->nlink: 2
	// (&(kmem_cache#29-oX (struct proc_dir_entry))->count)->counter: 1
	// &(kmem_cache#29-oX (struct proc_dir_entry))->pde_unload_lock을 이용한 spin lock 초기화 수행
	// ((&(kmem_cache#29-oX (struct proc_dir_entry))->pde_unload_lock)->rlock)->raw_lock: { { 0 } }
	// ((&(kmem_cache#29-oX (struct proc_dir_entry))->pde_unload_lock)->rlock)->magic: 0xdead4ead
	// ((&(kmem_cache#29-oX (struct proc_dir_entry))->pde_unload_lock)->rlock)->owner: 0xffffffff
	// ((&(kmem_cache#29-oX (struct proc_dir_entry))->pde_unload_lock)->rlock)->owner_cpu: 0xffffffff
	// &(kmem_cache#29-oX (struct proc_dir_entry))->pde_openers->i_sb_list->next: &(kmem_cache#29-oX (struct proc_dir_entry))->pde_openers->i_sb_list
	// &(kmem_cache#29-oX (struct proc_dir_entry))->pde_openers->i_sb_list->prev: &(kmem_cache#29-oX (struct proc_dir_entry))->pde_openers->i_sb_list
	//
	// parent: &proc_root

#if defined(CONFIG_SUN_OPENPROMFS) || defined(CONFIG_SUN_OPENPROMFS_MODULE) // CONFIG_SUN_OPENPROMFS=n, CONFIG_SUN_OPENPROMFS_MODULE=n
	/* just give it a mountpoint */
	proc_mkdir("openprom", NULL);
#endif
	proc_tty_init();

	// proc_tty_init 에서 한일:
	// struct proc_dir_entry 만큼 메모리를 할당 받음 kmem_cache#29-oX (struct proc_dir_entry)
	//
	// (kmem_cache#29-oX (struct proc_dir_entry))->name: "tty"
	// (kmem_cache#29-oX (struct proc_dir_entry))->namelen: 3
	// (kmem_cache#29-oX (struct proc_dir_entry))->mode: 0040555
	// (kmem_cache#29-oX (struct proc_dir_entry))->nlink: 2
	// (&(kmem_cache#29-oX (struct proc_dir_entry))->count)->counter: 1
	// &(kmem_cache#29-oX (struct proc_dir_entry))->pde_unload_lock을 이용한 spin lock 초기화 수행
	// ((&(kmem_cache#29-oX (struct proc_dir_entry))->pde_unload_lock)->rlock)->raw_lock: { { 0 } }
	// ((&(kmem_cache#29-oX (struct proc_dir_entry))->pde_unload_lock)->rlock)->magic: 0xdead4ead
	// ((&(kmem_cache#29-oX (struct proc_dir_entry))->pde_unload_lock)->rlock)->owner: 0xffffffff
	// ((&(kmem_cache#29-oX (struct proc_dir_entry))->pde_unload_lock)->rlock)->owner_cpu: 0xffffffff
	// &(kmem_cache#29-oX (struct proc_dir_entry))->pde_openers->i_sb_list->next: &(kmem_cache#29-oX (struct proc_dir_entry))->pde_openers->i_sb_list
	// &(kmem_cache#29-oX (struct proc_dir_entry))->pde_openers->i_sb_list->prev: &(kmem_cache#29-oX (struct proc_dir_entry))->pde_openers->i_sb_list
	//
	// parent: &proc_root
	//
	// struct proc_dir_entry 만큼 메모리를 할당 받음 kmem_cache#29-oX (struct proc_dir_entry)
	//
	// (kmem_cache#29-oX (struct proc_dir_entry))->name: "tty/ldisc"
	// (kmem_cache#29-oX (struct proc_dir_entry))->namelen: 9
	// (kmem_cache#29-oX (struct proc_dir_entry))->mode: 0040555
	// (kmem_cache#29-oX (struct proc_dir_entry))->nlink: 2
	// (&(kmem_cache#29-oX (struct proc_dir_entry))->count)->counter: 1
	// &(kmem_cache#29-oX (struct proc_dir_entry))->pde_unload_lock을 이용한 spin lock 초기화 수행
	// ((&(kmem_cache#29-oX (struct proc_dir_entry))->pde_unload_lock)->rlock)->raw_lock: { { 0 } }
	// ((&(kmem_cache#29-oX (struct proc_dir_entry))->pde_unload_lock)->rlock)->magic: 0xdead4ead
	// ((&(kmem_cache#29-oX (struct proc_dir_entry))->pde_unload_lock)->rlock)->owner: 0xffffffff
	// ((&(kmem_cache#29-oX (struct proc_dir_entry))->pde_unload_lock)->rlock)->owner_cpu: 0xffffffff
	// &(kmem_cache#29-oX (struct proc_dir_entry))->pde_openers->i_sb_list->next: &(kmem_cache#29-oX (struct proc_dir_entry))->pde_openers->i_sb_list
	// &(kmem_cache#29-oX (struct proc_dir_entry))->pde_openers->i_sb_list->prev: &(kmem_cache#29-oX (struct proc_dir_entry))->pde_openers->i_sb_list
	//
	// parent: &proc_root
	//
	// struct proc_dir_entry 만큼 메모리를 할당 받음 kmem_cache#29-oX (struct proc_dir_entry)
	//
	// (kmem_cache#29-oX (struct proc_dir_entry))->name: "tty/driver"
	// (kmem_cache#29-oX (struct proc_dir_entry))->namelen: 10
	// (kmem_cache#29-oX (struct proc_dir_entry))->mode: 00500
	// (kmem_cache#29-oX (struct proc_dir_entry))->nlink: 2
	// (&(kmem_cache#29-oX (struct proc_dir_entry))->count)->counter: 1
	// &(kmem_cache#29-oX (struct proc_dir_entry))->pde_unload_lock을 이용한 spin lock 초기화 수행
	// ((&(kmem_cache#29-oX (struct proc_dir_entry))->pde_unload_lock)->rlock)->raw_lock: { { 0 } }
	// ((&(kmem_cache#29-oX (struct proc_dir_entry))->pde_unload_lock)->rlock)->magic: 0xdead4ead
	// ((&(kmem_cache#29-oX (struct proc_dir_entry))->pde_unload_lock)->rlock)->owner: 0xffffffff
	// ((&(kmem_cache#29-oX (struct proc_dir_entry))->pde_unload_lock)->rlock)->owner_cpu: 0xffffffff
	// &(kmem_cache#29-oX (struct proc_dir_entry))->pde_openers->i_sb_list->next: &(kmem_cache#29-oX (struct proc_dir_entry))->pde_openers->i_sb_list
	// &(kmem_cache#29-oX (struct proc_dir_entry))->pde_openers->i_sb_list->prev: &(kmem_cache#29-oX (struct proc_dir_entry))->pde_openers->i_sb_list
	//
	// parent: &proc_root
	//
	// struct proc_dir_entry 만큼 메모리를 할당 받음 kmem_cache#29-oX (struct proc_dir_entry)
	//
	// (kmem_cache#29-oX (struct proc_dir_entry))->name: "tty/ldiscs"
	// (kmem_cache#29-oX (struct proc_dir_entry))->namelen: 10
	// (kmem_cache#29-oX (struct proc_dir_entry))->mode: 0100444
	// (kmem_cache#29-oX (struct proc_dir_entry))->nlink: 1
	// (&(kmem_cache#29-oX (struct proc_dir_entry))->count)->counter: 1
	// &(kmem_cache#29-oX (struct proc_dir_entry))->pde_unload_lock을 이용한 spin lock 초기화 수행
	// ((&(kmem_cache#29-oX (struct proc_dir_entry))->pde_unload_lock)->rlock)->raw_lock: { { 0 } }
	// ((&(kmem_cache#29-oX (struct proc_dir_entry))->pde_unload_lock)->rlock)->magic: 0xdead4ead
	// ((&(kmem_cache#29-oX (struct proc_dir_entry))->pde_unload_lock)->rlock)->owner: 0xffffffff
	// ((&(kmem_cache#29-oX (struct proc_dir_entry))->pde_unload_lock)->rlock)->owner_cpu: 0xffffffff
	// &(kmem_cache#29-oX (struct proc_dir_entry))->pde_openers->i_sb_list->next: &(kmem_cache#29-oX (struct proc_dir_entry))->pde_openers->i_sb_list
	// &(kmem_cache#29-oX (struct proc_dir_entry))->pde_openers->i_sb_list->prev: &(kmem_cache#29-oX (struct proc_dir_entry))->pde_openers->i_sb_list
	//
	// parent: &proc_root
	//
	// (kmem_cache#29-oX (struct proc_dir_entry))->proc_fops: &tty_ldiscs_proc_fops
	// (kmem_cache#29-oX (struct proc_dir_entry))->data: NULL
	//
	// idr_layer_cache를 사용하여 struct idr_layer 의 메모리 kmem_cache#21-oX를 1 개를 할당 받음
	//
	// (&(&proc_inum_ida)->idr)->id_free 이 idr object new 4번을 가르킴
	// |
	// |-> ---------------------------------------------------------------------------------------------------------------------------
	//     | idr object new 4         | idr object new 0     | idr object 6         | idr object 5         | .... | idr object 0     |
	//     ---------------------------------------------------------------------------------------------------------------------------
	//     | ary[0]: idr object new 0 | ary[0]: idr object 6 | ary[0]: idr object 5 | ary[0]: idr object 4 | .... | ary[0]: NULL     |
	//     ---------------------------------------------------------------------------------------------------------------------------
	//
	// (&(&proc_inum_ida)->idr)->id_free: kmem_cache#21-oX (idr object new 4)
	// (&(&proc_inum_ida)->idr)->id_free_cnt: 8
	//
	// (&(&proc_inum_ida)->idr)->top: kmem_cache#21-oX (struct idr_layer) (idr object 8)
	// (&(&proc_inum_ida)->idr)->layers: 1
	// (&(&proc_inum_ida)->idr)->id_free: (idr object new 0)
	// (&(&proc_inum_ida)->idr)->id_free_cnt: 7
	//
	// (kmem_cache#27-oX (struct ida_bitmap))->bitmap 의 4 bit를 1로 set 수행
	// (kmem_cache#27-oX (struct ida_bitmap))->nr_busy: 5
	//
	// kmem_cache인 kmem_cache#21 에서 할당한 object인 kmem_cache#21-oX (idr object new 4) 의 memory 공간을 반환함
	//
	// (kmem_cache#29-oX (struct proc_dir_entry))->low_ino: 0xF0000004
	// (kmem_cache#29-oX (struct proc_dir_entry))->proc_iops: &proc_file_inode_operations
	// (kmem_cache#29-oX (struct proc_dir_entry))->next: NULL
	// (kmem_cache#29-oX (struct proc_dir_entry))->parent: &proc_root
	//
	// (&proc_root)->subdir: kmem_cache#29-oX (struct proc_dir_entry)
	//
	// struct proc_dir_entry 만큼 메모리를 할당 받음 kmem_cache#29-oX (struct proc_dir_entry)
	//
	// (kmem_cache#29-oX (struct proc_dir_entry))->name: "tty/drivers"
	// (kmem_cache#29-oX (struct proc_dir_entry))->namelen: 11
	// (kmem_cache#29-oX (struct proc_dir_entry))->mode: 0100444
	// (kmem_cache#29-oX (struct proc_dir_entry))->nlink: 1
	// (&(kmem_cache#29-oX (struct proc_dir_entry))->count)->counter: 1
	// &(kmem_cache#29-oX (struct proc_dir_entry))->pde_unload_lock을 이용한 spin lock 초기화 수행
	// ((&(kmem_cache#29-oX (struct proc_dir_entry))->pde_unload_lock)->rlock)->raw_lock: { { 0 } }
	// ((&(kmem_cache#29-oX (struct proc_dir_entry))->pde_unload_lock)->rlock)->magic: 0xdead4ead
	// ((&(kmem_cache#29-oX (struct proc_dir_entry))->pde_unload_lock)->rlock)->owner: 0xffffffff
	// ((&(kmem_cache#29-oX (struct proc_dir_entry))->pde_unload_lock)->rlock)->owner_cpu: 0xffffffff
	// &(kmem_cache#29-oX (struct proc_dir_entry))->pde_openers->i_sb_list->next: &(kmem_cache#29-oX (struct proc_dir_entry))->pde_openers->i_sb_list
	// &(kmem_cache#29-oX (struct proc_dir_entry))->pde_openers->i_sb_list->prev: &(kmem_cache#29-oX (struct proc_dir_entry))->pde_openers->i_sb_list
	//
	// parent: &proc_root
	//
	// (kmem_cache#29-oX (struct proc_dir_entry))->proc_fops: &proc_tty_drivers_operations
	// (kmem_cache#29-oX (struct proc_dir_entry))->data: NULL
	//
	// idr_layer_cache를 사용하여 struct idr_layer 의 메모리 kmem_cache#21-oX를 1 개를 할당 받음
	//
	// (&(&proc_inum_ida)->idr)->id_free 이 idr object new 5번을 가르킴
	// |
	// |-> ---------------------------------------------------------------------------------------------------------------------------
	//     | idr object new 5         | idr object new 0     | idr object 6         | idr object 5         | .... | idr object 0     |
	//     ---------------------------------------------------------------------------------------------------------------------------
	//     | ary[0]: idr object new 0 | ary[0]: idr object 6 | ary[0]: idr object 5 | ary[0]: idr object 4 | .... | ary[0]: NULL     |
	//     ---------------------------------------------------------------------------------------------------------------------------
	//
	// (&(&proc_inum_ida)->idr)->id_free: kmem_cache#21-oX (idr object new 5)
	// (&(&proc_inum_ida)->idr)->id_free_cnt: 8
	//
	// (&(&proc_inum_ida)->idr)->top: kmem_cache#21-oX (struct idr_layer) (idr object 8)
	// (&(&proc_inum_ida)->idr)->layers: 1
	// (&(&proc_inum_ida)->idr)->id_free: (idr object new 0)
	// (&(&proc_inum_ida)->idr)->id_free_cnt: 7
	//
	// (kmem_cache#27-oX (struct ida_bitmap))->bitmap 의 5 bit를 1로 set 수행
	// (kmem_cache#27-oX (struct ida_bitmap))->nr_busy: 6
	//
	// kmem_cache인 kmem_cache#21 에서 할당한 object인 kmem_cache#21-oX (idr object new 5) 의 memory 공간을 반환함
	//
	// (kmem_cache#29-oX (struct proc_dir_entry))->low_ino: 0xF0000005
	// (kmem_cache#29-oX (struct proc_dir_entry))->proc_iops: &proc_file_inode_operations
	// (kmem_cache#29-oX (struct proc_dir_entry))->next: NULL
	// (kmem_cache#29-oX (struct proc_dir_entry))->parent: &proc_root
	//
	// (&proc_root)->subdir: kmem_cache#29-oX (struct proc_dir_entry)

#ifdef CONFIG_PROC_DEVICETREE // CONFIG_PROC_DEVICETREE=y
	proc_device_tree_init();

	// proc_device_tree_init 에서 한일:
	// struct proc_dir_entry 만큼 메모리를 할당 받음 kmem_cache#29-oX (struct proc_dir_entry)
	//
	// (kmem_cache#29-oX (struct proc_dir_entry))->name: "device-tree"
	// (kmem_cache#29-oX (struct proc_dir_entry))->namelen: 11
	// (kmem_cache#29-oX (struct proc_dir_entry))->mode: 0040555
	// (kmem_cache#29-oX (struct proc_dir_entry))->nlink: 2
	// (&(kmem_cache#29-oX (struct proc_dir_entry))->count)->counter: 1
	// &(kmem_cache#29-oX (struct proc_dir_entry))->pde_unload_lock을 이용한 spin lock 초기화 수행
	// ((&(kmem_cache#29-oX (struct proc_dir_entry))->pde_unload_lock)->rlock)->raw_lock: { { 0 } }
	// ((&(kmem_cache#29-oX (struct proc_dir_entry))->pde_unload_lock)->rlock)->magic: 0xdead4ead
	// ((&(kmem_cache#29-oX (struct proc_dir_entry))->pde_unload_lock)->rlock)->owner: 0xffffffff
	// ((&(kmem_cache#29-oX (struct proc_dir_entry))->pde_unload_lock)->rlock)->owner_cpu: 0xffffffff
	// &(kmem_cache#29-oX (struct proc_dir_entry))->pde_openers->i_sb_list->next: &(kmem_cache#29-oX (struct proc_dir_entry))->pde_openers->i_sb_list
	// &(kmem_cache#29-oX (struct proc_dir_entry))->pde_openers->i_sb_list->prev: &(kmem_cache#29-oX (struct proc_dir_entry))->pde_openers->i_sb_list
	//
	// parent: &proc_root
	//
	// unflatten_device_tree 에서 만든 tree의 root node 의 값을 사용하여proc device tree를 만드는 작업을 수행
#endif
	proc_mkdir("bus", NULL);

	// proc_mkdir 에서 한일:
	// struct proc_dir_entry 만큼 메모리를 할당 받음 kmem_cache#29-oX (struct proc_dir_entry)
	//
	// (kmem_cache#29-oX (struct proc_dir_entry))->name: "bus"
	// (kmem_cache#29-oX (struct proc_dir_entry))->namelen: 3
	// (kmem_cache#29-oX (struct proc_dir_entry))->mode: 0040555
	// (kmem_cache#29-oX (struct proc_dir_entry))->nlink: 2
	// (&(kmem_cache#29-oX (struct proc_dir_entry))->count)->counter: 1
	// &(kmem_cache#29-oX (struct proc_dir_entry))->pde_unload_lock을 이용한 spin lock 초기화 수행
	// ((&(kmem_cache#29-oX (struct proc_dir_entry))->pde_unload_lock)->rlock)->raw_lock: { { 0 } }
	// ((&(kmem_cache#29-oX (struct proc_dir_entry))->pde_unload_lock)->rlock)->magic: 0xdead4ead
	// ((&(kmem_cache#29-oX (struct proc_dir_entry))->pde_unload_lock)->rlock)->owner: 0xffffffff
	// ((&(kmem_cache#29-oX (struct proc_dir_entry))->pde_unload_lock)->rlock)->owner_cpu: 0xffffffff
	// &(kmem_cache#29-oX (struct proc_dir_entry))->pde_openers->i_sb_list->next: &(kmem_cache#29-oX (struct proc_dir_entry))->pde_openers->i_sb_list
	// &(kmem_cache#29-oX (struct proc_dir_entry))->pde_openers->i_sb_list->prev: &(kmem_cache#29-oX (struct proc_dir_entry))->pde_openers->i_sb_list
	//
	// parent: &proc_root

	proc_sys_init();

proc_sys_init()

calll: start_kernel()

proc_root_init()

call: proc_root_init()

proc_init_inodecache()
register_filesystem()
proc_self_init()
proc_symlink()
proc_net_init()
proc_mkdir("sysvipc", NULL);
proc_mkdir("fs", NULL);
proc_mkdir("driver", NULL);
proc_mkdir("fs/nfsd", NULL);
proc_mkdir("openprom", NULL);
proc_tty_init()
proc_device_tree_init();
proc_mkdir"bus", NULL);
proc_sys_init()

call: proc_sys_init()

// ARM10C 20160611
int __init proc_sys_init(void)
{
	struct proc_dir_entry *proc_sys_root;

	// proc_mkdir("sys", NULL): kmem_cache#29-oX (struct proc_dir_entry)
	proc_sys_root = proc_mkdir("sys", NULL);
	// proc_sys_root: kmem_cache#29-oX (struct proc_dir_entry)

	// proc_mkdir 에서 한일:
	// struct proc_dir_entry 만큼 메모리를 할당 받음 kmem_cache#29-oX (struct proc_dir_entry)
	//
	// (kmem_cache#29-oX (struct proc_dir_entry))->name: "sys"
	// (kmem_cache#29-oX (struct proc_dir_entry))->namelen: 3
	// (kmem_cache#29-oX (struct proc_dir_entry))->mode: 0040555
	// (kmem_cache#29-oX (struct proc_dir_entry))->nlink: 2
	// (&(kmem_cache#29-oX (struct proc_dir_entry))->count)->counter: 1
	// &(kmem_cache#29-oX (struct proc_dir_entry))->pde_unload_lock을 이용한 spin lock 초기화 수행
	// ((&(kmem_cache#29-oX (struct proc_dir_entry))->pde_unload_lock)->rlock)->raw_lock: { { 0 } }
	// ((&(kmem_cache#29-oX (struct proc_dir_entry))->pde_unload_lock)->rlock)->magic: 0xdead4ead
	// ((&(kmem_cache#29-oX (struct proc_dir_entry))->pde_unload_lock)->rlock)->owner: 0xffffffff
	// ((&(kmem_cache#29-oX (struct proc_dir_entry))->pde_unload_lock)->rlock)->owner_cpu: 0xffffffff
	// &(kmem_cache#29-oX (struct proc_dir_entry))->pde_openers->i_sb_list->next: &(kmem_cache#29-oX (struct proc_dir_entry))->pde_openers->i_sb_list
	// &(kmem_cache#29-oX (struct proc_dir_entry))->pde_openers->i_sb_list->prev: &(kmem_cache#29-oX (struct proc_dir_entry))->pde_openers->i_sb_list
	//
	// parent: &proc_root

	// proc_sys_root->proc_iops: (kmem_cache#29-oX (struct proc_dir_entry))->proc_iops
	proc_sys_root->proc_iops = &proc_sys_dir_operations;
	// proc_sys_root->proc_iops: (kmem_cache#29-oX (struct proc_dir_entry))->proc_iops: &proc_sys_dir_operations

	// proc_sys_root->proc_fops: (kmem_cache#29-oX (struct proc_dir_entry))->proc_fops
	proc_sys_root->proc_fops = &proc_sys_dir_file_operations;
	// proc_sys_root->proc_fops: (kmem_cache#29-oX (struct proc_dir_entry))->proc_fops: &proc_sys_dir_file_operations

	// proc_sys_root->nlink: (kmem_cache#29-oX (struct proc_dir_entry))->nlink: 2
	proc_sys_root->nlink = 0;
	// proc_sys_root->nlink: (kmem_cache#29-oX (struct proc_dir_entry))->nlink: 0

	return sysctl_init();
}

sysctl_init()

calll: start_kernel()

proc_root_init()

call: proc_root_init()

proc_init_inodecache()
register_filesystem()
proc_self_init()
proc_symlink()
proc_net_init()
proc_mkdir("sysvipc", NULL);
proc_mkdir("fs", NULL);
proc_mkdir("driver", NULL);
proc_mkdir("fs/nfsd", NULL);
proc_mkdir("openprom", NULL);
proc_tty_init()
proc_device_tree_init();
proc_mkdir"bus", NULL);
proc_sys_init()

call: proc_sys_init()

proc_sys_root()
sysctl_init();

call: sysctl_init()

// ARM10C 20160611
int __init sysctl_init(void)
{
	struct ctl_table_header *hdr;

	hdr = register_sysctl_table(sysctl_base_table);

register_sysctl_table()

calll: start_kernel()

proc_root_init()

call: proc_root_init()

proc_init_inodecache()
register_filesystem()
proc_self_init()
proc_symlink()
proc_net_init()
proc_mkdir("sysvipc", NULL);
proc_mkdir("fs", NULL);
proc_mkdir("driver", NULL);
proc_mkdir("fs/nfsd", NULL);
proc_mkdir("openprom", NULL);
proc_tty_init()
proc_device_tree_init();
proc_mkdir"bus", NULL);
proc_sys_init()

call: proc_sys_init()

proc_sys_root()
sysctl_init();

call: sysctl_init()

register_sysctl_table()

call: register_sysctl_table()

// ARM10C 20160611
// sysctl_base_table
struct ctl_table_header *register_sysctl_table(struct ctl_table *table)
{
	static const struct ctl_path null_path[] = { {} };

	// table: sysctl_base_table
	return register_sysctl_paths(null_path, table);
}
EXPORT_SYMBOL(register_sysctl_table);

register_sysctl_paths()

calll: start_kernel()

proc_root_init()

call: proc_root_init()

proc_init_inodecache()
register_filesystem()
proc_self_init()
proc_symlink()
proc_net_init()
proc_mkdir("sysvipc", NULL);
proc_mkdir("fs", NULL);
proc_mkdir("driver", NULL);
proc_mkdir("fs/nfsd", NULL);
proc_mkdir("openprom", NULL);
proc_tty_init()
proc_device_tree_init();
proc_mkdir"bus", NULL);
proc_sys_init()

call: proc_sys_init()

proc_sys_root()
sysctl_init();

call: sysctl_init()

register_sysctl_table()

call: register_sysctl_table()

register_sysctl_paths()

call: register_sysctl_paths()

// ARM10C 20160611
// null_path, table: sysctl_base_table
struct ctl_table_header *register_sysctl_paths(const struct ctl_path *path,
						struct ctl_table *table)
{
	// path: null_path, table: sysctl_base_table
	return __register_sysctl_paths(&sysctl_table_root.default_set,
					path, table);
}
EXPORT_SYMBOL(register_sysctl_paths);

__register_sysctl_paths()

calll: start_kernel()

proc_root_init()

call: proc_root_init()

proc_init_inodecache()
register_filesystem()
proc_self_init()
proc_symlink()
proc_net_init()
proc_mkdir("sysvipc", NULL);
proc_mkdir("fs", NULL);
proc_mkdir("driver", NULL);
proc_mkdir("fs/nfsd", NULL);
proc_mkdir("openprom", NULL);
proc_tty_init()
proc_device_tree_init();
proc_mkdir"bus", NULL);
proc_sys_init()

call: proc_sys_init()

proc_sys_root()
sysctl_init();

call: sysctl_init()

register_sysctl_table()

call: register_sysctl_table()

register_sysctl_paths()

call: register_sysctl_paths()

__register_sysctl_paths()

call: __register_sysctl_paths()

// ARM10C 20160611
// &sysctl_table_root.default_set, path: null_path, table: sysctl_base_table
struct ctl_table_header *__register_sysctl_paths(
	struct ctl_table_set *set,
	const struct ctl_path *path, struct ctl_table *table)
{
	// table: sysctl_base_table
	struct ctl_table *ctl_table_arg = table;
	// ctl_table_arg: sysctl_base_table

	// table: sysctl_base_table
	int nr_subheaders = count_subheaders(table);

count_subheaders()

calll: start_kernel()

proc_root_init()

call: proc_root_init()

proc_init_inodecache()
register_filesystem()
proc_self_init()
proc_symlink()
proc_net_init()
proc_mkdir("sysvipc", NULL);
proc_mkdir("fs", NULL);
proc_mkdir("driver", NULL);
proc_mkdir("fs/nfsd", NULL);
proc_mkdir("openprom", NULL);
proc_tty_init()
proc_device_tree_init();
proc_mkdir"bus", NULL);
proc_sys_init()

call: proc_sys_init()

proc_sys_root()
sysctl_init();

call: sysctl_init()

register_sysctl_table()

call: register_sysctl_table()

register_sysctl_paths()

call: register_sysctl_paths()

__register_sysctl_paths()

call: __register_sysctl_paths()

count_subheaders()
kmalloc(): PATH_MAX: 4096
kzalloc(): header: 256
register_leaf_sysctl_table()

call: register_leaf_sysctl_table()

__register_sysctl_tables()

// ARM10C 20160625
// [rc1] set: &sysctl_table_root.default_set, path: kmem_cache#23-oX, files: kmem_cache#24-oX
struct ctl_table_header *__register_sysctl_table(
	struct ctl_table_set *set,
	const char *path, struct ctl_table *table)
{
	// set->dir.header.root: (&sysctl_table_root.default_set)->dir.header.root: &sysctl_table_root
	struct ctl_table_root *root = set->dir.header.root;
	// root: &sysctl_table_root

	struct ctl_table_header *header;
	const char *name, *nextname;
	struct ctl_dir *dir;
	struct ctl_table *entry;
	struct ctl_node *node;
	int nr_entries = 0;
	// nr_entries: 0

	// table: kmem_cache#24-oX, entry: kmem_cache#24-oX, entry->procname: (kmem_cache#24-oX)->procname: "sched_child_runs_first"
	for (entry = table; entry->procname; entry++)
		// nr_entries: 0
		nr_entries++;
		// nr_entries: 1

		// kern_table 의 child 없는 index 만큼 loop 수행

	// 위 loop 의 수행결과:
	// nr_entries: 46

	// sizeof(struct ctl_table_header): 32 bytes, sizeof(struct ctl_node): 16 bytes, nr_entries: 46, GFP_KERNEL: 0xD0
	// kzalloc(768, GFP_KERNEL: 0xD0): kmem_cache#25-oX
	header = kzalloc(sizeof(struct ctl_table_header) +
			 sizeof(struct ctl_node)*nr_entries, GFP_KERNEL);
	// header: kmem_cache#25-oX

	// header: kmem_cache#25-oX
	if (!header)
		return NULL;

	// header: kmem_cache#25-oX
	node = (struct ctl_node *)(header + 1);
	// node: &(kmem_cache#25-oX)[1] (struct ctl_node)

// 2016/06/25 종료
// 2016/07/02 시작

	// header: kmem_cache#25-oX, root: &sysctl_table_root, set: &sysctl_table_root.default_set,
	// node: &(kmem_cache#25-oX)[1] (struct ctl_node), table: kmem_cache#24-oX
	init_header(header, root, set, node, table);

	// init_header 에서 한일:
	// (kmem_cache#25-oX)->ctl_table: kmem_cache#24-oX
	// (kmem_cache#25-oX)->ctl_table_arg: kmem_cache#24-oX
	// (kmem_cache#25-oX)->used: 0
	// (kmem_cache#25-oX)->count: 1
	// (kmem_cache#25-oX)->nreg: 1
	// (kmem_cache#25-oX)->unregistering: NULL
	// (kmem_cache#25-oX)->root: &sysctl_table_root
	// (kmem_cache#25-oX)->set: &sysctl_table_root.default_set
	// (kmem_cache#25-oX)->parent: NULL
	// (kmem_cache#25-oX)->node: &(kmem_cache#25-oX)[1] (struct ctl_node)
	// (&(kmem_cache#25-oX)[1...46] (struct ctl_node))->header: kmem_cache#25-oX

	// path: kmem_cache#23-oX, table: kmem_cache#24-oX
	// sysctl_check_table(kmem_cache#23-oX, kmem_cache#24-oX): 0
	if (sysctl_check_table(path, table))
		goto fail;

	// sysctl_check_table 에서 한일:
	// table: kmem_cache#24-oX (kern_table) 의 child 없는 맴버 46개 만큼 loop를 수행하면서 
	// kern_table 의 맴버값을 체크함

	spin_lock(&sysctl_lock);

	// spin_lock에서 한일:
	// &sysctl_lock을 이용한 spin lock 수행

	// &set->dir: &(&sysctl_table_root.default_set)->dir
	dir = &set->dir;
	// dir: &(&sysctl_table_root.default_set)->dir

	/* Reference moved down the diretory tree get_subdir */
	// dir->header.nreg: (&(&sysctl_table_root.default_set)->dir)->header.nreg: 1
	dir->header.nreg++;
	// dir->header.nreg: (&(&sysctl_table_root.default_set)->dir)->header.nreg: 2

	spin_unlock(&sysctl_lock);

	// spin_unlock에서 한일:
	// &sysctl_lock을 이용한 spin unlock 수행

	/* Find the directory for the ctl_table */
	// [f1] path: kmem_cache#23-oX: "kernel/", name: kmem_cache#23-oX: "kernel/"
	for (name = path; name; name = nextname) {
		int namelen;

		// [f2] name: kmem_cache#23-oX: "kernel/" 의 '/' 위치의 주소값+1: NULL

		// [f1] name: kmem_cache#23-oX: "kernel/"
		// [f1] strchr(kmem_cache#23-oX, '/'): kmem_cache#23-oX 의 '/' 위치의 주소값
		nextname = strchr(name, '/');
		// [f1] nextname: kmem_cache#23-oX: "kernel/" 의 '/' 위치의 주소값

		// [f1] nextname: kmem_cache#23-oX: "kernel/" 의 '/' 위치의 주소값
		if (nextname) {
			// [f1] nextname: kmem_cache#23-oX: "kernel/" 의 '/' 위치의 주소값,
			// [f1] name: kmem_cache#23-oX: "kernel/"
			namelen = nextname - name;
			// [f1] namelen: 6

			// [f1] nextname: kmem_cache#23-oX: "kernel/" 의 '/' 위치의 주소값
			nextname++;
			// [f1] nextname: kmem_cache#23-oX: "kernel/" 의 '/' 위치의 주소값+1
		} else {
			namelen = strlen(name);
		}

		// [f1] namelen: 6
		if (namelen == 0)
			continue;

		// [f1] dir: &(&sysctl_table_root.default_set)->dir, name: kmem_cache#23-oX: "kernel/", namelen: 6
		// [f1] get_subdir(&(&sysctl_table_root.default_set)->dir, "kernel/", 6): kmem_cache#29-oX
		dir = get_subdir(dir, name, namelen);
		// [f1] dir: kmem_cache#29-oX

		// [f1] get_subdir 에서 한일:
		// struct ctl_dir: 36, struct ctl_node: 16, struct ctl_table: 34 * 2, char: 7
		// 만큼의 메모리 kmem_cache#29-oX 를 할당 받음
		//
		// (kmem_cache#29-oX + 120): "kernel"
		// ((kmem_cache#29-oX + 52)[0] (struct ctl_table)).procname: (kmem_cache#29-oX + 120): "kernel"
		// ((kmem_cache#29-oX + 52)[0] (struct ctl_table)).mode: 0040555
		// (&(kmem_cache#29-oX)->header)->ctl_table: (kmem_cache#29-oX + 52) (struct ctl_table)
		// (&(kmem_cache#29-oX)->header)->ctl_table_arg: (kmem_cache#29-oX + 52) (struct ctl_table)
		// (&(kmem_cache#29-oX)->header)->used: 0
		// (&(kmem_cache#29-oX)->header)->count: 1
		// (&(kmem_cache#29-oX)->header)->nreg: 1
		// (&(kmem_cache#29-oX)->header)->unregistering: NULL
		// (&(kmem_cache#29-oX)->header)->root: (&sysctl_table_root.default_set)->dir.header.root
		// (&(kmem_cache#29-oX)->header)->set: &sysctl_table_root.default_set
		// (&(kmem_cache#29-oX)->header)->parent: NULL
		// (&(kmem_cache#29-oX)->header)->node: (kmem_cache#29-oX + 36) (struct ctl_node)
		// ((kmem_cache#29-oX + 36) (struct ctl_node))->header: &(kmem_cache#29-oX)->header
		//
		// (&(&sysctl_table_root.default_set)->dir)->header.nreg: 3
		// (&(kmem_cache#29-oX)->header)->parent: &(&sysctl_table_root.default_set)->dir
		//
		// (&((kmem_cache#29-oX + 36) (struct ctl_node)).node).__rb_parent_color: NULL
		// (&((kmem_cache#29-oX + 36) (struct ctl_node)).node)->rb_left: NULL
		// (&((kmem_cache#29-oX + 36) (struct ctl_node)).node)->rb_right: NULL
		// (&(&sysctl_table_root.default_set)->dir)->root.rb_node: &((kmem_cache#29-oX + 36) (struct ctl_node)).node
		//
		// RB Tree &((kmem_cache#29-oX + 36) (struct ctl_node)).node 을 black node 로 추가
		/*
		//                          proc-b
		//                         (kernel)
		*/
		// (&(&(&sysctl_table_root.default_set)->dir)->header)->nreg: 2
		// (&(kmem_cache#29-oX)->header)->nreg: 1

		// [f1] dir: kmem_cache#29-oX, IS_ERR(kmem_cache#29-oX): 0
		if (IS_ERR(dir))
			goto fail;

// 2016/07/02 종료
// 2016/07/09 시작

	}

	spin_lock(&sysctl_lock);

	// spin_unlock에서 한일:
	// &sysctl_lock을 이용한 spin unlock 수행

	// dir: kmem_cache#29-oX, header: kmem_cache#25-oX
	if (insert_header(dir, header))
		goto fail_put_dir_locked;

insert_header()

call: start_kernel()

lockdep_init()
smp_setup_processor_id()
debug_objects_early_init()
boot_init_stack_canary()
cgroup_init_early()
local_irq_disable()
boot_cpu_init()
page_address_init()
pr_notice()
setup_arch()
mm_init_owner()
mm_init_cpumask()
setup_command_line
build_all_zonelists()
page_alloc_init()
pr_notice()
parse_early_param()
parse_args()
jump_label_init()
setup_log_buf()
pidhash_init()
vfs_caches_init_early()
sort_main_extable()
trap_init()
mm_init()
sched_init()
preempt_disable()
irqs_disabled()
local_irq_disabled()
idr_init_cache()
rcu_init()
tick_nohz_init()
contect_tracking_init()
radix_tree_init()
early_irq_init()
init_IRQ()
tick_init()
init_timers()
hrtimers_init()
softirq_init()
timekeeping_init()
time_init()
sched_clock_postinit()
pref_event_init()
profile_init()
call_function_init()
irqs_disabled()
local_irq_enabled()
kmem_cache_init_late()
console_init()
lockdep_init()
lockdep_info()
locking_selftest()
virt_to_page()
page_to_pfn()
page_cgroup_init()
debug_objects_mem_init()
kmemleak_init()
setup_per_cpu_pageset()
numa_policy_init()
sched_clock_init()
calibrate_delay()
pidmap_init()
anon_vma_init()
thread_info_cache_init()
cred_init()
fork_init()
proc_caches_init()
buffer_init()
key_init()
security_init()
dbg_late_init()
vfs_caches_init()
signals_init()
page_writeback_init()
proc_root_init()

call: proc_root_init()

proc_init_inodecache()
register_filesystem()
proc_self_init()
proc_symlink()
proc_net_init()
proc_mkdir("sysvipc", NULL);
proc_mkdir("fs", NULL);
proc_mkdir("driver", NULL);
proc_mkdir("fs/nfsd", NULL);
proc_mkdir("openprom", NULL);
proc_tty_init()
proc_device_tree_init();
proc_mkdir"bus", NULL);
proc_sys_init()

call: proc_sys_init()

proc_mkdir("sys", NULL);
sysctl_init();

call: sysctl_init()

register_sysctl_table()

call: register_sysctl_table()

register_sysctl_paths()

call: register_sysctl_paths()

__register_sysctl_paths()

call: __register_sysctl_paths()

count_subheaders()
kmalloc(): PATH_MAX: 4096
kzalloc(): header: 256
register_leaf_sysctl_table()

call: register_leaf_sysctl_table()

__register_sysctl_table()

call: __register_sysctl_table()

kzalloc(768, GFP_KERNEL: 0xD0): kmem_cache#25-oX
init_header()
sysctl_check_table()
spin_lock()
- // &sysctl_lock을 이용한 spin lock 수행
- // &set->dir: &(&sysctl_table_root.default_set)->dir
- dir = &set->dir;
- // dir: &(&sysctl_table_root.default_set)->dir
- /* Reference moved down the diretory tree get_subdir */
- // dir->header.nreg: (&(&sysctl_table_root.default_set)->dir)->header.nreg: 1
- dir->header.nreg++;
- // dir->header.nreg: (&(&sysctl_table_root.default_set)->dir)->header.nreg: 2
spin_unlock()
get_subdir()
spin_lock()
insert_keaher()

call: insert_keader()

insert_links()
insert_entry()

// ARM10C 20160709
// [2nd] dir: kmem_cache#29-oX, header: kmem_cache#25-oX
static int insert_header(struct ctl_dir *dir, struct ctl_table_header *header)
{
	struct ctl_table *entry;
	int err;

	// [1st] dir->header.nreg: (&(&sysctl_table_root.default_set)->dir)->header.nreg: 2
	// [2nd] dir->header.nreg: (kmem_cache#29-oX)->header.nreg: 1
	dir->header.nreg++;
	// [1st] dir->header.nreg: (&(&sysctl_table_root.default_set)->dir)->header.nreg: 3
	// [2nd] dir->header.nreg: (kmem_cache#29-oX)->header.nreg: 2

	// [1st] header->parent: (&(kmem_cache#29-oX)->header)->parent: NULL,
	// [1st] dir: &(&sysctl_table_root.default_set)->dir
	// [2nd] header->parent: (kmem_cache#25-oX)->parent: NULL, dir: kmem_cache#29-oX
	header->parent = dir;
	// [1st] header->parent: (&(kmem_cache#29-oX)->header)->parent: &(&sysctl_table_root.default_set)->dir
	// [2nd] header->parent: (kmem_cache#25-oX)->parent: kmem_cache#29-oX

	// [1st] header: &(kmem_cache#29-oX)->header, insert_links(&(kmem_cache#29-oX)->header): 0
	// [2nd] header: kmem_cache#25-oX, insert_links(kmem_cache#25-oX): 0
	err = insert_links(header);
	// [1st] err: 0
	// [2nd] err: 0

	// [1st] err: 0
	// [2nd] err: 0
	if (err)
		goto fail_links;

	// [2nd] NOTE:
	// struct ctl_table 의 46 개 크기만큼 할당 받은 메모리 kmem_cache#24-oX 에
	// kern_table의 child 멤버 값이 NULL 인 index 의 table 값을 복사한 값

	// [1st][f1] header->ctl_table: (&(kmem_cache#29-oX)->header)->ctl_table: (kmem_cache#29-oX + 52) (struct ctl_table),
	// [1st][f1] entry: (kmem_cache#29-oX + 52) (struct ctl_table), ((kmem_cache#29-oX + 52) (struct ctl_table))->procname: "kernel"
	//
	// [2nd][f1] header->ctl_table: (kmem_cache#25-oX)->ctl_table: kmem_cache#24-oX
	// [2nd][f1] entry: kmem_cache#24-oX (struct ctl_table), (kmem_cache#24-oX (struct ctl_table))->procname: "sched_child_runs_first"
	for (entry = header->ctl_table; entry->procname; entry++) {
		// [1st][f2] entry: ((kmem_cache#29-oX + 52) (struct ctl_table))[1]
		// [1st][f2] entry->procname: (((kmem_cache#29-oX + 52) (struct ctl_table))[1]).procname: NULL

		// [2nd][f2] entry: (kmem_cache#24-oX (struct ctl_table))[1]
		// [2nd][f2] entry->procname: ((kmem_cache#24-oX (struct ctl_table))[1]).procname: "sched_min_granularity_ns"

		// [1st][f1] header: &(kmem_cache#29-oX)->header, entry: (kmem_cache#29-oX + 52) (struct ctl_table)
		// [1st][f1] insert_entry(&(kmem_cache#29-oX)->header, (kmem_cache#29-oX + 52) (struct ctl_table)): 0
		// [2nd][f1] header: kmem_cache#25-oX, entry: kmem_cache#24-oX (struct ctl_table)
		// [2nd][f1] insert_entry(kmem_cache#25-oX, kmem_cache#24-oX (struct ctl_table)): 0
		// [2nd][f2] header: kmem_cache#25-oX, entry: (kmem_cache#24-oX (struct ctl_table))[1]
		// [2nd][f2] insert_entry(kmem_cache#25-oX, kmem_cache#24-oX (struct ctl_table)): 0
		err = insert_entry(header, entry);
		// [1st][f1] err: 0
		// [2nd][f1] err: 0
		// [2nd][f2] err: 0

		// [1st][f1] insert_entry 에서 한일:
		// (&((kmem_cache#29-oX + 36) (struct ctl_node)).node).__rb_parent_color: NULL
		// (&((kmem_cache#29-oX + 36) (struct ctl_node)).node)->rb_left: NULL
		// (&((kmem_cache#29-oX + 36) (struct ctl_node)).node)->rb_right: NULL
		// (&(&sysctl_table_root.default_set)->dir)->root.rb_node: &((kmem_cache#29-oX + 36) (struct ctl_node)).node
		//
		// &((kmem_cache#29-oX + 36) (struct ctl_node)).node 을 black node 로 추가
		// (proc의 kernel directory)
		/*
		//                          proc-b
		//                         (kernel)
		*/

		// [2nd][f1] insert_entry 에서 한일:
		// (&(&(kmem_cache#25-oX)[1] (struct ctl_node)).node).__rb_parent_color: NULL
		// (&(&(kmem_cache#25-oX)[1] (struct ctl_node)).node)->rb_left: NULL
		// (&(&(kmem_cache#25-oX)[1] (struct ctl_node)).node)->rb_right: NULL
		// &(kmem_cache#29-oX)->root.rb_node: &(&(kmem_cache#25-oX)[1] (struct ctl_node)).node
		//
		// &(&(kmem_cache#25-oX)[1] (struct ctl_node)).node 을 black node 로 추가
		// (kern_table 의 1 번째 index의 값)
		/*
		//                       kern_table-b
		//                 (sched_child_runs_first)
		*/

		// [2nd][f2] insert_entry 에서 한일:
		// (&(&(kmem_cache#25-oX)[1] (struct ctl_node) + 1).node).__rb_parent_color: &(&(kmem_cache#25-oX)[1] (struct ctl_node)).node
		// (&(&(kmem_cache#25-oX)[1] (struct ctl_node) + 1).node)->rb_left: NULL
		// (&(&(kmem_cache#25-oX)[1] (struct ctl_node) + 1).node)->rb_right: NULL
		// (&(&(kmem_cache#25-oX)[1] (struct ctl_node)).node)->rb_right: &(&(kmem_cache#25-oX)[1] (struct ctl_node) + 1).node
		//
		// &(&(kmem_cache#25-oX)[1] (struct ctl_node) + 1).node 을 node 로 추가 후 rbtree 로 구성
		// (kern_table 의 2 번째 index의 값)
		/*
		//                       kern_table-b
		//                 (sched_child_runs_first)
		//                                      \
		//                                        kern_table-r
		//                                  (sched_min_granularity_ns)
		//
		*/

		// [1st][f1] err: 0
		// [2nd][f1] err: 0
		// [2nd][f2] err: 0
		if (err)
			goto fail;

		// [2nd][f2] 위의 loop를 kern_table 의 index 수만큼 수행 (46개)
	}

	// [2nd] 위의 loop 수행 결과
	// TODO: kern_table 의 rbtree 그림을 그려야함

// 2016/07/09 종료

	return 0;
	// [1st] return 0
	// [2nd] return 0
fail:
	erase_header(header);
	put_links(header);
fail_links:
	header->parent = NULL;
	drop_sysctl_table(&dir->header);
	return err;
}

__register_sysctl_table()

insert_header()

call: start_kernel()

lockdep_init()
smp_setup_processor_id()
debug_objects_early_init()
boot_init_stack_canary()
cgroup_init_early()
local_irq_disable()
boot_cpu_init()
page_address_init()
pr_notice()
setup_arch()
mm_init_owner()
mm_init_cpumask()
setup_command_line
build_all_zonelists()
page_alloc_init()
pr_notice()
parse_early_param()
parse_args()
jump_label_init()
setup_log_buf()
pidhash_init()
vfs_caches_init_early()
sort_main_extable()
trap_init()
mm_init()
sched_init()
preempt_disable()
irqs_disabled()
local_irq_disabled()
idr_init_cache()
rcu_init()
tick_nohz_init()
contect_tracking_init()
radix_tree_init()
early_irq_init()
init_IRQ()
tick_init()
init_timers()
hrtimers_init()
softirq_init()
timekeeping_init()
time_init()
sched_clock_postinit()
pref_event_init()
profile_init()
call_function_init()
irqs_disabled()
local_irq_enabled()
kmem_cache_init_late()
console_init()
lockdep_init()
lockdep_info()
locking_selftest()
virt_to_page()
page_to_pfn()
page_cgroup_init()
debug_objects_mem_init()
kmemleak_init()
setup_per_cpu_pageset()
numa_policy_init()
sched_clock_init()
calibrate_delay()
pidmap_init()
anon_vma_init()
thread_info_cache_init()
cred_init()
fork_init()
proc_caches_init()
buffer_init()
key_init()
security_init()
dbg_late_init()
vfs_caches_init()
signals_init()
page_writeback_init()
proc_root_init()

call: proc_root_init()

proc_init_inodecache()
register_filesystem()
proc_self_init()
proc_symlink()
proc_net_init()
proc_mkdir("sysvipc", NULL);
proc_mkdir("fs", NULL);
proc_mkdir("driver", NULL);
proc_mkdir("fs/nfsd", NULL);
proc_mkdir("openprom", NULL);
proc_tty_init()
proc_device_tree_init();
proc_mkdir"bus", NULL);
proc_sys_init()

call: proc_sys_init()

proc_mkdir("sys", NULL);
sysctl_init();

call: sysctl_init()

register_sysctl_table()

call: register_sysctl_table()

register_sysctl_paths()

call: register_sysctl_paths()

__register_sysctl_paths()

call: __register_sysctl_paths()

count_subheaders()
kmalloc(): PATH_MAX: 4096
kzalloc(): header: 256
register_leaf_sysctl_table()

call: register_leaf_sysctl_table()

__register_sysctl_table()

call: __register_sysctl_table()

kzalloc(768, GFP_KERNEL: 0xD0): kmem_cache#25-oX
init_header()
sysctl_check_table()
spin_lock()
- // &sysctl_lock을 이용한 spin lock 수행
- // &set->dir: &(&sysctl_table_root.default_set)->dir
- dir = &set->dir;
- // dir: &(&sysctl_table_root.default_set)->dir
- /* Reference moved down the diretory tree get_subdir */
- // dir->header.nreg: (&(&sysctl_table_root.default_set)->dir)->header.nreg: 1
- dir->header.nreg++;
- // dir->header.nreg: (&(&sysctl_table_root.default_set)->dir)->header.nreg: 2
spin_unlock()
get_subdir()
spin_lock()
insert_keaher()

call: insert_keader()

insert_links()
insert_entry()

return: __register_sysctl_table()

kzalloc(768, GFP_KERNEL: 0xD0): kmem_cache#25-oX
init_header()
sysctl_check_table()
spin_lock()
- // &sysctl_lock을 이용한 spin lock 수행
- // &set->dir: &(&sysctl_table_root.default_set)->dir
- dir = &set->dir;
- // dir: &(&sysctl_table_root.default_set)->dir
- /* Reference moved down the diretory tree get_subdir */
- // dir->header.nreg: (&(&sysctl_table_root.default_set)->dir)->header.nreg: 1
- dir->header.nreg++;
- // dir->header.nreg: (&(&sysctl_table_root.default_set)->dir)->header.nreg: 2
spin_unlock()
get_subdir()
spin_lock()
insert_keaher()
drop_sysctl_table()

// ARM10C 20160625
// [rc1] set: &sysctl_table_root.default_set, path: kmem_cache#23-oX, files: kmem_cache#24-oX
struct ctl_table_header *__register_sysctl_table(
	struct ctl_table_set *set,
	const char *path, struct ctl_table *table)
{
	// set->dir.header.root: (&sysctl_table_root.default_set)->dir.header.root: &sysctl_table_root
	struct ctl_table_root *root = set->dir.header.root;
	// root: &sysctl_table_root

	struct ctl_table_header *header;
	const char *name, *nextname;
	struct ctl_dir *dir;
	struct ctl_table *entry;
	struct ctl_node *node;
	int nr_entries = 0;
	// nr_entries: 0

	// table: kmem_cache#24-oX, entry: kmem_cache#24-oX, entry->procname: (kmem_cache#24-oX)->procname: "sched_child_runs_first"
	for (entry = table; entry->procname; entry++)
		// nr_entries: 0
		nr_entries++;
		// nr_entries: 1

		// kern_table 의 child 없는 index 만큼 loop 수행

	// 위 loop 의 수행결과:
	// nr_entries: 46

	// sizeof(struct ctl_table_header): 32 bytes, sizeof(struct ctl_node): 16 bytes, nr_entries: 46, GFP_KERNEL: 0xD0
	// kzalloc(768, GFP_KERNEL: 0xD0): kmem_cache#25-oX
	header = kzalloc(sizeof(struct ctl_table_header) +
			 sizeof(struct ctl_node)*nr_entries, GFP_KERNEL);
	// header: kmem_cache#25-oX

	// header: kmem_cache#25-oX
	if (!header)
		return NULL;

	// header: kmem_cache#25-oX
	node = (struct ctl_node *)(header + 1);
	// node: &(kmem_cache#25-oX)[1] (struct ctl_node)

// 2016/06/25 종료
// 2016/07/02 시작

	// header: kmem_cache#25-oX, root: &sysctl_table_root, set: &sysctl_table_root.default_set,
	// node: &(kmem_cache#25-oX)[1] (struct ctl_node), table: kmem_cache#24-oX
	init_header(header, root, set, node, table);

	// init_header 에서 한일:
	// (kmem_cache#25-oX)->ctl_table: kmem_cache#24-oX
	// (kmem_cache#25-oX)->ctl_table_arg: kmem_cache#24-oX
	// (kmem_cache#25-oX)->used: 0
	// (kmem_cache#25-oX)->count: 1
	// (kmem_cache#25-oX)->nreg: 1
	// (kmem_cache#25-oX)->unregistering: NULL
	// (kmem_cache#25-oX)->root: &sysctl_table_root
	// (kmem_cache#25-oX)->set: &sysctl_table_root.default_set
	// (kmem_cache#25-oX)->parent: NULL
	// (kmem_cache#25-oX)->node: &(kmem_cache#25-oX)[1] (struct ctl_node)
	// (&(kmem_cache#25-oX)[1...46] (struct ctl_node))->header: kmem_cache#25-oX

	// path: kmem_cache#23-oX, table: kmem_cache#24-oX
	// sysctl_check_table(kmem_cache#23-oX, kmem_cache#24-oX): 0
	if (sysctl_check_table(path, table))
		goto fail;

	// sysctl_check_table 에서 한일:
	// table: kmem_cache#24-oX (kern_table) 의 child 없는 맴버 46개 만큼 loop를 수행하면서 
	// kern_table 의 맴버값을 체크함

	spin_lock(&sysctl_lock);

	// spin_lock에서 한일:
	// &sysctl_lock을 이용한 spin lock 수행

	// &set->dir: &(&sysctl_table_root.default_set)->dir
	dir = &set->dir;
	// dir: &(&sysctl_table_root.default_set)->dir

	/* Reference moved down the diretory tree get_subdir */
	// dir->header.nreg: (&(&sysctl_table_root.default_set)->dir)->header.nreg: 1
	dir->header.nreg++;
	// dir->header.nreg: (&(&sysctl_table_root.default_set)->dir)->header.nreg: 2

	spin_unlock(&sysctl_lock);

	// spin_unlock에서 한일:
	// &sysctl_lock을 이용한 spin unlock 수행

	/* Find the directory for the ctl_table */
	// [f1] path: kmem_cache#23-oX: "kernel/", name: kmem_cache#23-oX: "kernel/"
	for (name = path; name; name = nextname) {
		int namelen;

		// [f2] name: kmem_cache#23-oX: "kernel/" 의 '/' 위치의 주소값+1: NULL

		// [f1] name: kmem_cache#23-oX: "kernel/"
		// [f1] strchr(kmem_cache#23-oX, '/'): kmem_cache#23-oX 의 '/' 위치의 주소값
		nextname = strchr(name, '/');
		// [f1] nextname: kmem_cache#23-oX: "kernel/" 의 '/' 위치의 주소값

		// [f1] nextname: kmem_cache#23-oX: "kernel/" 의 '/' 위치의 주소값
		if (nextname) {
			// [f1] nextname: kmem_cache#23-oX: "kernel/" 의 '/' 위치의 주소값,
			// [f1] name: kmem_cache#23-oX: "kernel/"
			namelen = nextname - name;
			// [f1] namelen: 6

			// [f1] nextname: kmem_cache#23-oX: "kernel/" 의 '/' 위치의 주소값
			nextname++;
			// [f1] nextname: kmem_cache#23-oX: "kernel/" 의 '/' 위치의 주소값+1
		} else {
			namelen = strlen(name);
		}

		// [f1] namelen: 6
		if (namelen == 0)
			continue;

		// [f1] dir: &(&sysctl_table_root.default_set)->dir, name: kmem_cache#23-oX: "kernel/", namelen: 6
		// [f1] get_subdir(&(&sysctl_table_root.default_set)->dir, "kernel/", 6): kmem_cache#29-oX
		dir = get_subdir(dir, name, namelen);
		// [f1] dir: kmem_cache#29-oX

		// [f1] get_subdir 에서 한일:
		// struct ctl_dir: 36, struct ctl_node: 16, struct ctl_table: 34 * 2, char: 7
		// 만큼의 메모리 kmem_cache#29-oX 를 할당 받음
		//
		// (kmem_cache#29-oX + 120): "kernel"
		// ((kmem_cache#29-oX + 52)[0] (struct ctl_table)).procname: (kmem_cache#29-oX + 120): "kernel"
		// ((kmem_cache#29-oX + 52)[0] (struct ctl_table)).mode: 0040555
		// (&(kmem_cache#29-oX)->header)->ctl_table: (kmem_cache#29-oX + 52) (struct ctl_table)
		// (&(kmem_cache#29-oX)->header)->ctl_table_arg: (kmem_cache#29-oX + 52) (struct ctl_table)
		// (&(kmem_cache#29-oX)->header)->used: 0
		// (&(kmem_cache#29-oX)->header)->count: 1
		// (&(kmem_cache#29-oX)->header)->nreg: 1
		// (&(kmem_cache#29-oX)->header)->unregistering: NULL
		// (&(kmem_cache#29-oX)->header)->root: (&sysctl_table_root.default_set)->dir.header.root
		// (&(kmem_cache#29-oX)->header)->set: &sysctl_table_root.default_set
		// (&(kmem_cache#29-oX)->header)->parent: NULL
		// (&(kmem_cache#29-oX)->header)->node: (kmem_cache#29-oX + 36) (struct ctl_node)
		// ((kmem_cache#29-oX + 36) (struct ctl_node))->header: &(kmem_cache#29-oX)->header
		//
		// (&(&sysctl_table_root.default_set)->dir)->header.nreg: 3
		// (&(kmem_cache#29-oX)->header)->parent: &(&sysctl_table_root.default_set)->dir
		//
		// (&((kmem_cache#29-oX + 36) (struct ctl_node)).node).__rb_parent_color: NULL
		// (&((kmem_cache#29-oX + 36) (struct ctl_node)).node)->rb_left: NULL
		// (&((kmem_cache#29-oX + 36) (struct ctl_node)).node)->rb_right: NULL
		// (&(&sysctl_table_root.default_set)->dir)->root.rb_node: &((kmem_cache#29-oX + 36) (struct ctl_node)).node
		//
		// RB Tree &((kmem_cache#29-oX + 36) (struct ctl_node)).node 을 black node 로 추가
		/*
		//                          proc-b
		//                         (kernel)
		*/
		// (&(&(&sysctl_table_root.default_set)->dir)->header)->nreg: 2
		// (&(kmem_cache#29-oX)->header)->nreg: 1

		// [f1] dir: kmem_cache#29-oX, IS_ERR(kmem_cache#29-oX): 0
		if (IS_ERR(dir))
			goto fail;

// 2016/07/02 종료
// 2016/07/09 시작

	}

	spin_lock(&sysctl_lock);

	// spin_unlock에서 한일:
	// &sysctl_lock을 이용한 spin unlock 수행

	// dir: kmem_cache#29-oX, header: kmem_cache#25-oX
	if (insert_header(dir, header))
		goto fail_put_dir_locked;

	drop_sysctl_table(&dir->header);
	spin_unlock(&sysctl_lock);

	return header;

fail_put_dir_locked:
	drop_sysctl_table(&dir->header);
	spin_unlock(&sysctl_lock);
fail:
	kfree(header);
	dump_stack();
	return NULL;
}

drop_sysctl_table()

call: start_kernel()

lockdep_init()
smp_setup_processor_id()
debug_objects_early_init()
boot_init_stack_canary()
cgroup_init_early()
local_irq_disable()
boot_cpu_init()
page_address_init()
pr_notice()
setup_arch()
mm_init_owner()
mm_init_cpumask()
setup_command_line
build_all_zonelists()
page_alloc_init()
pr_notice()
parse_early_param()
parse_args()
jump_label_init()
setup_log_buf()
pidhash_init()
vfs_caches_init_early()
sort_main_extable()
trap_init()
mm_init()
sched_init()
preempt_disable()
irqs_disabled()
local_irq_disabled()
idr_init_cache()
rcu_init()
tick_nohz_init()
contect_tracking_init()
radix_tree_init()
early_irq_init()
init_IRQ()
tick_init()
init_timers()
hrtimers_init()
softirq_init()
timekeeping_init()
time_init()
sched_clock_postinit()
pref_event_init()
profile_init()
call_function_init()
irqs_disabled()
local_irq_enabled()
kmem_cache_init_late()
console_init()
lockdep_init()
lockdep_info()
locking_selftest()
virt_to_page()
page_to_pfn()
page_cgroup_init()
debug_objects_mem_init()
kmemleak_init()
setup_per_cpu_pageset()
numa_policy_init()
sched_clock_init()
calibrate_delay()
pidmap_init()
anon_vma_init()
thread_info_cache_init()
cred_init()
fork_init()
proc_caches_init()
buffer_init()
key_init()
security_init()
dbg_late_init()
vfs_caches_init()
signals_init()
page_writeback_init()
proc_root_init()

call: proc_root_init()

proc_init_inodecache()
register_filesystem()
proc_self_init()
proc_symlink()
proc_net_init()
proc_mkdir("sysvipc", NULL);
proc_mkdir("fs", NULL);
proc_mkdir("driver", NULL);
proc_mkdir("fs/nfsd", NULL);
proc_mkdir("openprom", NULL);
proc_tty_init()
proc_device_tree_init();
proc_mkdir"bus", NULL);
proc_sys_init()

call: proc_sys_init()

proc_mkdir("sys", NULL);
sysctl_init();

call: sysctl_init()

register_sysctl_table()

call: register_sysctl_table()

register_sysctl_paths()

call: register_sysctl_paths()

__register_sysctl_paths()

call: __register_sysctl_paths()

count_subheaders()
kmalloc(): PATH_MAX: 4096
kzalloc(): header: 256
register_leaf_sysctl_table()

call: register_leaf_sysctl_table()

__register_sysctl_table()

call: __register_sysctl_table()

kzalloc(768, GFP_KERNEL: 0xD0): kmem_cache#25-oX
init_header()
sysctl_check_table()
spin_lock()
- // &sysctl_lock을 이용한 spin lock 수행
- // &set->dir: &(&sysctl_table_root.default_set)->dir
- dir = &set->dir;
- // dir: &(&sysctl_table_root.default_set)->dir
- /* Reference moved down the diretory tree get_subdir */
- // dir->header.nreg: (&(&sysctl_table_root.default_set)->dir)->header.nreg: 1
- dir->header.nreg++;
- // dir->header.nreg: (&(&sysctl_table_root.default_set)->dir)->header.nreg: 2
spin_unlock()
get_subdir()
spin_lock()
insert_keaher()

call: insert_keader()

insert_links()
insert_entry()

return: __register_sysctl_table()

kzalloc(768, GFP_KERNEL: 0xD0): kmem_cache#25-oX
init_header()
sysctl_check_table()
spin_lock()
- // &sysctl_lock을 이용한 spin lock 수행
- // &set->dir: &(&sysctl_table_root.default_set)->dir
- dir = &set->dir;
- // dir: &(&sysctl_table_root.default_set)->dir
- /* Reference moved down the diretory tree get_subdir */
- // dir->header.nreg: (&(&sysctl_table_root.default_set)->dir)->header.nreg: 1
- dir->header.nreg++;
- // dir->header.nreg: (&(&sysctl_table_root.default_set)->dir)->header.nreg: 2
spin_unlock()
get_subdir()
spin_lock()
insert_keaher()
drop_sysctl_table()

call: drop_sysctl_table()

// ARM10C 20160702
// &new->header: &(kmem_cache#29-oX)->header
static void drop_sysctl_table(struct ctl_table_header *header)
{
	// header->parent: (&(&(&sysctl_table_root.default_set)->dir)->header)->parent: NULL
	// header->parent: (&(kmem_cache#29-oX)->header)->parent: &(&sysctl_table_root.default_set)->dir
	struct ctl_dir *parent = header->parent;
	// parent: NULL
	// parent: &(&sysctl_table_root.default_set)->dir

	// header->nreg: (&(&(&sysctl_table_root.default_set)->dir)->header)->nreg: 3
	// header->nreg: (&(kmem_cache#29-oX)->header)->nreg: 2
	if (--header->nreg)
		// header->nreg: (&(&(&sysctl_table_root.default_set)->dir)->header)->nreg: 2
		// header->nreg: (&(kmem_cache#29-oX)->header)->nreg: 1
		return;
		// return
		// return

	put_links(header);
	start_unregistering(header);
	if (!--header->count)
		kfree_rcu(header, rcu);

	if (parent)
		drop_sysctl_table(&parent->header);
}

register_leaf_sysctl_table()

call: start_kernel()

lockdep_init()
smp_setup_processor_id()
debug_objects_early_init()
boot_init_stack_canary()
cgroup_init_early()
local_irq_disable()
boot_cpu_init()
page_address_init()
pr_notice()
setup_arch()
mm_init_owner()
mm_init_cpumask()
setup_command_line
build_all_zonelists()
page_alloc_init()
pr_notice()
parse_early_param()
parse_args()
jump_label_init()
setup_log_buf()
pidhash_init()
vfs_caches_init_early()
sort_main_extable()
trap_init()
mm_init()
sched_init()
preempt_disable()
irqs_disabled()
local_irq_disabled()
idr_init_cache()
rcu_init()
tick_nohz_init()
contect_tracking_init()
radix_tree_init()
early_irq_init()
init_IRQ()
tick_init()
init_timers()
hrtimers_init()
softirq_init()
timekeeping_init()
time_init()
sched_clock_postinit()
pref_event_init()
profile_init()
call_function_init()
irqs_disabled()
local_irq_enabled()
kmem_cache_init_late()
console_init()
lockdep_init()
lockdep_info()
locking_selftest()
virt_to_page()
page_to_pfn()
page_cgroup_init()
debug_objects_mem_init()
kmemleak_init()
setup_per_cpu_pageset()
numa_policy_init()
sched_clock_init()
calibrate_delay()
pidmap_init()
anon_vma_init()
thread_info_cache_init()
cred_init()
fork_init()
proc_caches_init()
buffer_init()
key_init()
security_init()
dbg_late_init()
vfs_caches_init()
signals_init()
page_writeback_init()
proc_root_init()

call: proc_root_init()

proc_init_inodecache()
register_filesystem()
proc_self_init()
proc_symlink()
proc_net_init()
proc_mkdir("sysvipc", NULL);
proc_mkdir("fs", NULL);
proc_mkdir("driver", NULL);
proc_mkdir("fs/nfsd", NULL);
proc_mkdir("openprom", NULL);
proc_tty_init()
proc_device_tree_init();
proc_mkdir"bus", NULL);
proc_sys_init()

call: proc_sys_init()

proc_mkdir("sys", NULL);
sysctl_init();

call: sysctl_init()

register_sysctl_table()

call: register_sysctl_table()

register_sysctl_paths()

call: register_sysctl_paths()

__register_sysctl_paths()

call: __register_sysctl_paths()

count_subheaders()
kmalloc(): PATH_MAX: 4096
kzalloc(): header: 256
register_leaf_sysctl_table()

call: register_leaf_sysctl_table()

__register_sysctl_table()

call: __register_sysctl_table()

kzalloc(768, GFP_KERNEL: 0xD0): kmem_cache#25-oX
init_header()
sysctl_check_table()
spin_lock()
- // &sysctl_lock을 이용한 spin lock 수행
- // &set->dir: &(&sysctl_table_root.default_set)->dir
- dir = &set->dir;
- // dir: &(&sysctl_table_root.default_set)->dir
- /* Reference moved down the diretory tree get_subdir */
- // dir->header.nreg: (&(&sysctl_table_root.default_set)->dir)->header.nreg: 1
- dir->header.nreg++;
- // dir->header.nreg: (&(&sysctl_table_root.default_set)->dir)->header.nreg: 2
spin_unlock()
get_subdir()
spin_lock()
insert_header()

call: insert_keader()

insert_links()
insert_entry()

return: __register_sysctl_table()

kzalloc(768, GFP_KERNEL: 0xD0): kmem_cache#25-oX
init_header()
sysctl_check_table()
spin_lock()
- // &sysctl_lock을 이용한 spin lock 수행
- // &set->dir: &(&sysctl_table_root.default_set)->dir
- dir = &set->dir;
- // dir: &(&sysctl_table_root.default_set)->dir
- /* Reference moved down the diretory tree get_subdir */
- // dir->header.nreg: (&(&sysctl_table_root.default_set)->dir)->header.nreg: 1
- dir->header.nreg++;
- // dir->header.nreg: (&(&sysctl_table_root.default_set)->dir)->header.nreg: 2
spin_unlock()
get_subdir()
spin_lock()
insert_keaher()
drop_sysctl_table()

return: register_leaf_sysctl_table()

__register_sysctl_table()

// ARM10C 20160625
// [rc1] path: kmem_cache#23-oX, child_pos: &(kmem_cache#23-oX)[7] subheader: &(kmem_cache#27-oX)[1] (struct ctl_table_header)
// [rc1] set: &sysctl_table_root.default_set, entry->child: sysctl_base_table[0].child: kern_table
static int register_leaf_sysctl_tables(const char *path, char *pos,
	struct ctl_table_header ***subheader, struct ctl_table_set *set,
	struct ctl_table *table)
{
	struct ctl_table *ctl_table_arg = NULL;
	// ctl_table_arg: NULL
	// [rc1] ctl_table_arg: NULL

	struct ctl_table *entry, *files;
	int nr_files = 0;
	// nr_files: 0
	// [rc1] nr_files: 0

	int nr_dirs = 0;
	// nr_dirs: 0
	// [rc1] nr_dirs: 0

	// ENOMEM: 12
	// [rc1] ENOMEM: 12
	int err = -ENOMEM;
	// err: -12
	// [rc1] err: -12

	// table: sysctl_base_table, entry: sysctl_base_table,
	// entry->procname: sysctl_base_table[0].procname: "kernel"
	// [rc1] table: kern_table, entry: kern_table,
	// [rc1] entry->procname: kern_table[0].procname: "sched_child_runs_first"
	for (entry = table; entry->procname; entry++) {
		// entry->child: sysctl_base_table[0].child: kern_table
		// [rc1] entry->child: kern_table[0].child: NULL
		if (entry->child)
			// nr_dirs: 0
			nr_dirs++;
			// nr_dirs: 1
		else
			// [rc1] nr_files: 0
			nr_files++;
			// [rc1] nr_files: 1

		// sysctl_base_table 맴버 값 만큼 loop 수행
		// [rc1] kern_table 맴버 값 만큼 loop 수행
	}

	// 위 loop를 수행한 결과
	// nr_dirs: 5

	// [rc1] 위 loop를 수행한 결과
	// [rc1] nr_dirs: 2, [rc1] nr_files: 46

	// table: sysctl_base_table
	// [rc1] table: kern_table
	files = table;
	// files: sysctl_base_table
	// [rc1] files: kern_table

	/* If there are mixed files and directories we need a new table */
	// nr_dirs: 5, nr_files: 0
	// [rc1] nr_dirs: 2, nr_files: 46
	if (nr_dirs && nr_files) {
		struct ctl_table *new;

		// [rc1] sizeof(struct ctl_table): 34 bytes, nr_files: 46, GFP_KERNEL: 0xD0
		// [rc1] kzalloc(1598, GFP_KERNEL: 0xD0): kmem_cache#24-oX
		files = kzalloc(sizeof(struct ctl_table) * (nr_files + 1),
				GFP_KERNEL);
		// [rc1] files: kmem_cache#24-oX

		// [rc1] files: kmem_cache#24-oX
		if (!files)
			goto out;

		// [rc1] ctl_table_arg: NULL, [rc1] files: kmem_cache#24-oX
		ctl_table_arg = files;
		// [rc1] ctl_table_arg: kmem_cache#24-oX

		// [rc1] files: kmem_cache#24-oX, new: kmem_cache#24-oX, table: kern_table, entry: kern_table,
		// [rc1] entry->procname: kern_table[0].procname: "sched_child_runs_first"
		for (new = files, entry = table; entry->procname; entry++) {
			// [rc1] entry->child: kern_table[0].child: NULL
			if (entry->child)
				continue;
			// [rc1] *new: (kmem_cache#24-oX)[0], *entry: kern_table[0]
			*new = *entry;
			// [rc1] *new: (kmem_cache#24-oX)[0]: kern_table[0]

			// [rc1] new: kmem_cache#24-oX
			new++;
			// [rc1] new: &(kmem_cache#24-oX + 1)

			// [rc1] kern_table 이 가지고 있는 index 만큼 loop 수행
		}

		// [rc1] 위 loop의 수행 결과:
		// struct ctl_table 의 46 개 크기만큼 할당 받은 메모리 kmem_cache#24-oX 에
		// kern_table의 child 멤버 값이 NULL 인 index 의 table 값을 복사함
	}

	/* Register everything except a directory full of subdirectories */
	// nr_files: 0, nr_dirs: 5
	// [rc1] nr_files: 46, nr_dirs: 2
	if (nr_files || !nr_dirs) {
		struct ctl_table_header *header;

		// [rc1] set: &sysctl_table_root.default_set, path: kmem_cache#23-oX, files: kmem_cache#24-oX
		header = __register_sysctl_table(set, path, files);
		if (!header) {
			kfree(ctl_table_arg);
			goto out;
		}

		/* Remember if we need to free the file table */
		header->ctl_table_arg = ctl_table_arg;
		**subheader = header;
		(*subheader)++;
	}

	/* Recurse into the subdirectories. */
	// table: sysctl_base_table, entry: sysctl_base_table,
	// entry->procname: sysctl_base_table[0].procname: "kernel"
	for (entry = table; entry->procname; entry++) {
		char *child_pos;

		// entry->child: sysctl_base_table[0].child: kern_table
		if (!entry->child)
			continue;

		// ENAMETOOLONG: 36
		err = -ENAMETOOLONG;
		// err: -36

		// path: kmem_cache#23-oX, pos: kmem_cache#23-oX,
		// entry->procname: sysctl_base_table[0].procname: "kernel"
		// append_path(kmem_cache#23-oX, kmem_cache#23-oX, "kernel"): &(kmem_cache#23-oX)[7]
		child_pos = append_path(path, pos, entry->procname);
		// child_pos: &(kmem_cache#23-oX)[7]

		// append_path 에서 한일:
		// pos: kmem_cache#23-oX: "kernel/"

		// child_pos: &(kmem_cache#23-oX)[7]
		if (!child_pos)
			goto out;

		// path: kmem_cache#23-oX, child_pos: &(kmem_cache#23-oX)[7] subheader: &(kmem_cache#27-oX)[1] (struct ctl_table_header)
		// set: &sysctl_table_root.default_set, entry->child: sysctl_base_table[0].child: kern_table
		// register_leaf_sysctl_tables(kmem_cache#23-oX, &(kmem_cache#23-oX)[7], &(kmem_cache#27-oX)[1] (struct ctl_table_header), 
		//                             &sysctl_table_root.default_set, kern_table): 0
		err = register_leaf_sysctl_tables(path, child_pos, subheader,
						  set, entry->child);
		// err: 0

		// register_leaf_sysctl_tables 에서 한일:

		pos[0] = '\0';
		if (err)
			goto out;
	}
	err = 0;
out:
	/* On failure our caller will unregister all registered subheaders */
	return err;
}

__register_sysctl_paths()

call: start_kernel()

lockdep_init()
smp_setup_processor_id()
debug_objects_early_init()
boot_init_stack_canary()
cgroup_init_early()
local_irq_disable()
boot_cpu_init()
page_address_init()
pr_notice()
setup_arch()
mm_init_owner()
mm_init_cpumask()
setup_command_line
build_all_zonelists()
page_alloc_init()
pr_notice()
parse_early_param()
parse_args()
jump_label_init()
setup_log_buf()
pidhash_init()
vfs_caches_init_early()
sort_main_extable()
trap_init()
mm_init()
sched_init()
preempt_disable()
irqs_disabled()
local_irq_disabled()
idr_init_cache()
rcu_init()
tick_nohz_init()
contect_tracking_init()
radix_tree_init()
early_irq_init()
init_IRQ()
tick_init()
init_timers()
hrtimers_init()
softirq_init()
timekeeping_init()
time_init()
sched_clock_postinit()
pref_event_init()
profile_init()
call_function_init()
irqs_disabled()
local_irq_enabled()
kmem_cache_init_late()
console_init()
lockdep_init()
lockdep_info()
locking_selftest()
virt_to_page()
page_to_pfn()
page_cgroup_init()
debug_objects_mem_init()
kmemleak_init()
setup_per_cpu_pageset()
numa_policy_init()
sched_clock_init()
calibrate_delay()
pidmap_init()
anon_vma_init()
thread_info_cache_init()
cred_init()
fork_init()
proc_caches_init()
buffer_init()
key_init()
security_init()
dbg_late_init()
vfs_caches_init()
signals_init()
page_writeback_init()
proc_root_init()

call: proc_root_init()

proc_init_inodecache()
register_filesystem()
proc_self_init()
proc_symlink()
proc_net_init()
proc_mkdir("sysvipc", NULL);
proc_mkdir("fs", NULL);
proc_mkdir("driver", NULL);
proc_mkdir("fs/nfsd", NULL);
proc_mkdir("openprom", NULL);
proc_tty_init()
proc_device_tree_init();
proc_mkdir"bus", NULL);
proc_sys_init()

call: proc_sys_init()

proc_mkdir("sys", NULL);
sysctl_init();

call: sysctl_init()

register_sysctl_table()

call: register_sysctl_table()

register_sysctl_paths()

call: register_sysctl_paths()

__register_sysctl_paths()

call: __register_sysctl_paths()

count_subheaders()
kmalloc(): PATH_MAX: 4096
kzalloc(): header: 256
register_leaf_sysctl_table()

// ARM10C 20160611
// &sysctl_table_root.default_set, path: null_path, table: sysctl_base_table
struct ctl_table_header *__register_sysctl_paths(
	struct ctl_table_set *set,
	const struct ctl_path *path, struct ctl_table *table)
{
	// table: sysctl_base_table
	struct ctl_table *ctl_table_arg = table;
	// ctl_table_arg: sysctl_base_table

	// table: sysctl_base_table, count_subheaders(sysctl_base_table): 2
	int nr_subheaders = count_subheaders(table);
	// nr_subheaders: 2

	struct ctl_table_header *header = NULL, **subheaders, **subheader;
	// header: NULL

	const struct ctl_path *component;
	char *new_path, *pos;

	// PATH_MAX: 4096, GFP_KERNEL: 0xD0,
	// kmalloc(4096, GFP_KERNEL: 0xD0): kmem_cache#23-oX
	pos = new_path = kmalloc(PATH_MAX, GFP_KERNEL);
	// pos: kmem_cache#23-oX, new_path: kmem_cache#23-oX

	// new_path: kmem_cache#23-oX
	if (!new_path)
		return NULL;

	// pos[0]: (kmem_cache#23-oX)[0]
	pos[0] = '\0';
	// pos[0]: (kmem_cache#23-oX)[0]: '\0'

	// path: null_path, component: null_path, component->procname: null_path->procname: NULL
	for (component = path; component->procname; component++) {
		pos = append_path(new_path, pos, component->procname);
		if (!pos)
			goto out;
	}

	// table->procname: sysctl_base_table[0].procname: "kernel",
	// table->child: sysctl_base_table[0].child: kern_table,
	// table[1]->procname: sysctl_base_table[1].procname: "vm",
	while (table->procname && table->child && !table[1].procname) {
		pos = append_path(new_path, pos, table->procname);
		if (!pos)
			goto out;
		table = table->child;
	}

	// nr_subheaders: 2
	if (nr_subheaders == 1) {
		header = __register_sysctl_table(set, new_path, table);
		if (header)
			header->ctl_table_arg = ctl_table_arg;
	} else {
		// header: NULL, sizeof(struct ctl_table_header): 32 bytes
		// sizeof(*header): 32, sizeof(*subheaders): 4, nr_subheaders: 2, GFP_KERNEL: 0xD0,
		// kzalloc(256, GFP_KERNEL: 0xD0): kmem_cache#27-oX
		header = kzalloc(sizeof(*header) +
				 sizeof(*subheaders)*nr_subheaders, GFP_KERNEL);
		// header: kmem_cache#27-oX

		// header: kmem_cache#27-oX
		if (!header)
			goto out;

		// header: kmem_cache#27-oX
		subheaders = (struct ctl_table_header **) (header + 1);
		// subheaders: &(kmem_cache#27-oX)[1] (struct ctl_table_header)

		// subheaders: &(kmem_cache#27-oX)[1] (struct ctl_table_header)
		subheader = subheaders;
		// subheader: &(kmem_cache#27-oX)[1] (struct ctl_table_header)

		// header->ctl_table_arg: (kmem_cache#27-oX)->ctl_table_arg, ctl_table_arg: sysctl_base_table
		header->ctl_table_arg = ctl_table_arg;
		// header->ctl_table_arg: (kmem_cache#27-oX)->ctl_table_arg: sysctl_base_table

		// new_path: kmem_cache#23-oX, pos: kmem_cache#23-oX, subheader: &(kmem_cache#27-oX)[1] (struct ctl_table_header)
		// set: &sysctl_table_root.default_set, table: sysctl_base_table
		if (register_leaf_sysctl_tables(new_path, pos, &subheader,
						set, table))
			goto err_register_leaves;
	}

out:
	kfree(new_path);
	return header;

err_register_leaves:
	while (subheader > subheaders) {
		struct ctl_table_header *subh = *(--subheader);
		struct ctl_table *table = subh->ctl_table_arg;
		unregister_sysctl_table(subh);
		kfree(table);
	}
	kfree(header);
	header = NULL;
	goto out;
}

register_sysctl_paths()

call: start_kernel()

lockdep_init()
smp_setup_processor_id()
debug_objects_early_init()
boot_init_stack_canary()
cgroup_init_early()
local_irq_disable()
boot_cpu_init()
page_address_init()
pr_notice()
setup_arch()
mm_init_owner()
mm_init_cpumask()
setup_command_line
build_all_zonelists()
page_alloc_init()
pr_notice()
parse_early_param()
parse_args()
jump_label_init()
setup_log_buf()
pidhash_init()
vfs_caches_init_early()
sort_main_extable()
trap_init()
mm_init()
sched_init()
preempt_disable()
irqs_disabled()
local_irq_disabled()
idr_init_cache()
rcu_init()
tick_nohz_init()
contect_tracking_init()
radix_tree_init()
early_irq_init()
init_IRQ()
tick_init()
init_timers()
hrtimers_init()
softirq_init()
timekeeping_init()
time_init()
sched_clock_postinit()
pref_event_init()
profile_init()
call_function_init()
irqs_disabled()
local_irq_enabled()
kmem_cache_init_late()
console_init()
lockdep_init()
lockdep_info()
locking_selftest()
virt_to_page()
page_to_pfn()
page_cgroup_init()
debug_objects_mem_init()
kmemleak_init()
setup_per_cpu_pageset()
numa_policy_init()
sched_clock_init()
calibrate_delay()
pidmap_init()
anon_vma_init()
thread_info_cache_init()
cred_init()
fork_init()
proc_caches_init()
buffer_init()
key_init()
security_init()
dbg_late_init()
vfs_caches_init()
signals_init()
page_writeback_init()
proc_root_init()

call: proc_root_init()

proc_init_inodecache()
register_filesystem()
proc_self_init()
proc_symlink()
proc_net_init()
proc_mkdir("sysvipc", NULL);
proc_mkdir("fs", NULL);
proc_mkdir("driver", NULL);
proc_mkdir("fs/nfsd", NULL);
proc_mkdir("openprom", NULL);
proc_tty_init()
proc_device_tree_init();
proc_mkdir"bus", NULL);
proc_sys_init()

call: proc_sys_init()

proc_mkdir("sys", NULL);
sysctl_init();

call: sysctl_init()

register_sysctl_table()

call: register_sysctl_table()

register_sysctl_paths()

call: register_sysctl_paths()

__register_sysctl_paths()

// ARM10C 20160611
// null_path, table: sysctl_base_table
struct ctl_table_header *register_sysctl_paths(const struct ctl_path *path,
						struct ctl_table *table)
{
	// path: null_path, table: sysctl_base_table
	return __register_sysctl_paths(&sysctl_table_root.default_set,
					path, table);
}
EXPORT_SYMBOL(register_sysctl_paths);

register_sysctl_table()

start_kernel() ...

- proc_root_init()

call: proc_root_init()

proc_init_inodecache()
register_filesystem()
proc_self_init()
proc_symlink()
proc_net_init()
proc_mkdir("sysvipc", NULL);
proc_mkdir("fs", NULL);
proc_mkdir("driver", NULL);
proc_mkdir("fs/nfsd", NULL);
proc_mkdir("openprom", NULL);
proc_tty_init()
proc_device_tree_init();
proc_mkdir"bus", NULL);
proc_sys_init()

call: proc_sys_init()

proc_mkdir("sys", NULL);
sysctl_init();

call: sysctl_init()

register_sysctl_table()

call: register_sysctl_table()

register_sysctl_paths()

`` // ARM10C 20160611 // sysctl_base_table struct ctl_table_header *register_sysctl_table(struct ctl_table *table) { static const struct ctl_path null_path[] = { {} };

// table: sysctl_base_table
return register_sysctl_paths(null_path, table);

} EXPORT_SYMBOL(register_sysctl_table);


## sysctl_init()

* start_kernel()
...
 -  - proc_root_init()

* call: proc_root_init()
 - proc_init_inodecache()
 - register_filesystem()
 - proc_self_init()
 - proc_symlink()
 - proc_net_init()
 - proc_mkdir("sysvipc", NULL);
 - proc_mkdir("fs", NULL);
 - proc_mkdir("driver", NULL);
 - proc_mkdir("fs/nfsd", NULL);
 - proc_mkdir("openprom", NULL);
 - proc_tty_init()
 - proc_device_tree_init();
 - proc_mkdir"bus", NULL);
 - proc_sys_init()
 
* call: proc_sys_init()
 - proc_mkdir("sys", NULL);
 - sysctl_init();

* call: sysctl_init()
 - register_sysctl_table()

// ARM10C 20160611 int __init sysctl_init(void) { struct ctl_table_header *hdr;

hdr = register_sysctl_table(sysctl_base_table);
kmemleak_not_leak(hdr);
return 0;

}


## proc_sys_init()

* start_kernel()
...
 -  - proc_root_init()

* call: proc_root_init()
 - proc_init_inodecache()
 - register_filesystem()
 - proc_self_init()
 - proc_symlink()
 - proc_net_init()
 - proc_mkdir("sysvipc", NULL);
 - proc_mkdir("fs", NULL);
 - proc_mkdir("driver", NULL);
 - proc_mkdir("fs/nfsd", NULL);
 - proc_mkdir("openprom", NULL);
 - proc_tty_init()
 - proc_device_tree_init();
 - proc_mkdir"bus", NULL);
 - proc_sys_init()
 
* call: proc_sys_init()
 - proc_mkdir("sys", NULL);
 - sysctl_init();

// ARM10C 20160611 int __init proc_sys_init(void) { struct proc_dir_entry *proc_sys_root;

// proc_mkdir("sys", NULL): kmem_cache#29-oX (struct proc_dir_entry)
proc_sys_root = proc_mkdir("sys", NULL);
// proc_sys_root: kmem_cache#29-oX (struct proc_dir_entry)

// proc_mkdir 에서 한일:
// struct proc_dir_entry 만큼 메모리를 할당 받음 kmem_cache#29-oX (struct proc_dir_entry)
//
// (kmem_cache#29-oX (struct proc_dir_entry))->name: "sys"
// (kmem_cache#29-oX (struct proc_dir_entry))->namelen: 3
// (kmem_cache#29-oX (struct proc_dir_entry))->mode: 0040555
// (kmem_cache#29-oX (struct proc_dir_entry))->nlink: 2
// (&(kmem_cache#29-oX (struct proc_dir_entry))->count)->counter: 1
// &(kmem_cache#29-oX (struct proc_dir_entry))->pde_unload_lock을 이용한 spin lock 초기화 수행
// ((&(kmem_cache#29-oX (struct proc_dir_entry))->pde_unload_lock)->rlock)->raw_lock: { { 0 } }
// ((&(kmem_cache#29-oX (struct proc_dir_entry))->pde_unload_lock)->rlock)->magic: 0xdead4ead
// ((&(kmem_cache#29-oX (struct proc_dir_entry))->pde_unload_lock)->rlock)->owner: 0xffffffff
// ((&(kmem_cache#29-oX (struct proc_dir_entry))->pde_unload_lock)->rlock)->owner_cpu: 0xffffffff
// &(kmem_cache#29-oX (struct proc_dir_entry))->pde_openers->i_sb_list->next: &(kmem_cache#29-oX (struct proc_dir_entry))->pde_openers->i_sb_list
// &(kmem_cache#29-oX (struct proc_dir_entry))->pde_openers->i_sb_list->prev: &(kmem_cache#29-oX (struct proc_dir_entry))->pde_openers->i_sb_list
//
// parent: &proc_root

// proc_sys_root->proc_iops: (kmem_cache#29-oX (struct proc_dir_entry))->proc_iops
proc_sys_root->proc_iops = &proc_sys_dir_operations;
// proc_sys_root->proc_iops: (kmem_cache#29-oX (struct proc_dir_entry))->proc_iops: &proc_sys_dir_operations

// proc_sys_root->proc_fops: (kmem_cache#29-oX (struct proc_dir_entry))->proc_fops
proc_sys_root->proc_fops = &proc_sys_dir_file_operations;
// proc_sys_root->proc_fops: (kmem_cache#29-oX (struct proc_dir_entry))->proc_fops: &proc_sys_dir_file_operations

// proc_sys_root->nlink: (kmem_cache#29-oX (struct proc_dir_entry))->nlink: 2
proc_sys_root->nlink = 0;
// proc_sys_root->nlink: (kmem_cache#29-oX (struct proc_dir_entry))->nlink: 0

return sysctl_init();

}


## proc_root_init()

* start_kernel()
...
 -  - proc_root_init()

* call: proc_root_init()
 - proc_init_inodecache()
 - register_filesystem()
 - proc_self_init()
 - proc_symlink()
 - proc_net_init()
 - proc_mkdir("sysvipc", NULL);
 - proc_mkdir("fs", NULL);
 - proc_mkdir("driver", NULL);
 - proc_mkdir("fs/nfsd", NULL);
 - proc_mkdir("openprom", NULL);
 - proc_tty_init()
 - proc_device_tree_init();
 - proc_mkdir"bus", NULL);
 - proc_sys_init()

// ARM10C 20160604 void __init proc_root_init(void) { int err;

proc_init_inodecache();

// proc_init_inodecache 에서 한일:
// struct proc_inode 크기 만큼의 메모리를 할당항는 kmem_cache 할당자를 생성함
// proc_inode_cachep: kmem_cache#n#28 (struct proc_inode)

// register_filesystem(&proc_fs_type): 0
err = register_filesystem(&proc_fs_type);
// err: 0

// register_filesystem에서 한일:
// (&bd_type)->next: &proc_fs_type
//
// file system 연결 결과
// file_systems: sysfs_fs_type -> rootfs_fs_type -> shmem_fs_type -> bd_type -> proc_fs_type

// err: 0
if (err)
	return;

proc_self_init();

// proc_self_init 에서 한일:
// idr_layer_cache를 사용하여 struct idr_layer 의 메모리 kmem_cache#21-oX를 2 개를 할당 받음
//
// (&(&proc_inum_ida)->idr)->id_free 이 idr object new 1번을 가르킴
// |
// |-> ---------------------------------------------------------------------------------------------------------------------------
//     | idr object new 1         | idr object new 0     | idr object 6         | idr object 5         | .... | idr object 0     |
//     ---------------------------------------------------------------------------------------------------------------------------
//     | ary[0]: idr object new 0 | ary[0]: idr object 6 | ary[0]: idr object 5 | ary[0]: idr object 4 | .... | ary[0]: NULL     |
//     ---------------------------------------------------------------------------------------------------------------------------
//
// (&(&proc_inum_ida)->idr)->id_free: kmem_cache#21-oX (idr object new 1)
// (&(&proc_inum_ida)->idr)->id_free_cnt: 8
//
// (&(&proc_inum_ida)->idr)->top: kmem_cache#21-oX (struct idr_layer) (idr object 8)
// (&(&proc_inum_ida)->idr)->layers: 1
// (&(&proc_inum_ida)->idr)->id_free: (idr object new 0)
// (&(&proc_inum_ida)->idr)->id_free_cnt: 7
//
// (kmem_cache#27-oX (struct ida_bitmap))->bitmap 의 1 bit를 1로 set 수행
// (kmem_cache#27-oX (struct ida_bitmap))->nr_busy: 2
//
// kmem_cache인 kmem_cache#21 에서 할당한 object인 kmem_cache#21-oX (idr object new 1) 의 memory 공간을 반환함
//
// self_inum: 0xF0000001

// proc_symlink("mounts", NULL, "self/mounts"): kmem_cache#29-oX (struct proc_dir_entry)
proc_symlink("mounts", NULL, "self/mounts");

// proc_symlink 에서 한일:
// struct proc_dir_entry 만큼 메모리를 할당 받음 kmem_cache#29-oX (struct proc_dir_entry)
//
// (kmem_cache#29-oX (struct proc_dir_entry))->name: "mounts"
// (kmem_cache#29-oX (struct proc_dir_entry))->namelen: 6
// (kmem_cache#29-oX (struct proc_dir_entry))->mode: 0120777
// (kmem_cache#29-oX (struct proc_dir_entry))->nlink: 1
// (&(kmem_cache#29-oX (struct proc_dir_entry))->count)->counter: 1
// &(kmem_cache#29-oX (struct proc_dir_entry))->pde_unload_lock을 이용한 spin lock 초기화 수행
// ((&(kmem_cache#29-oX (struct proc_dir_entry))->pde_unload_lock)->rlock)->raw_lock: { { 0 } }
// ((&(kmem_cache#29-oX (struct proc_dir_entry))->pde_unload_lock)->rlock)->magic: 0xdead4ead
// ((&(kmem_cache#29-oX (struct proc_dir_entry))->pde_unload_lock)->rlock)->owner: 0xffffffff
// ((&(kmem_cache#29-oX (struct proc_dir_entry))->pde_unload_lock)->rlock)->owner_cpu: 0xffffffff
// &(kmem_cache#29-oX (struct proc_dir_entry))->pde_openers->i_sb_list->next: &(kmem_cache#29-oX (struct proc_dir_entry))->pde_openers->i_sb_list
// &(kmem_cache#29-oX (struct proc_dir_entry))->pde_openers->i_sb_list->prev: &(kmem_cache#29-oX (struct proc_dir_entry))->pde_openers->i_sb_list
//
// parent: &proc_root
//
// (kmem_cache#29-oX (struct proc_dir_entry))->data: kmem_cache#30-oX: "self/mounts"
//
// idr_layer_cache를 사용하여 struct idr_layer 의 메모리 kmem_cache#21-oX를 1 개를 할당 받음
//
// (&(&proc_inum_ida)->idr)->id_free 이 idr object new 2번을 가르킴
// |
// |-> ---------------------------------------------------------------------------------------------------------------------------
//     | idr object new 2         | idr object new 0     | idr object 6         | idr object 5         | .... | idr object 0     |
//     ---------------------------------------------------------------------------------------------------------------------------
//     | ary[0]: idr object new 0 | ary[0]: idr object 6 | ary[0]: idr object 5 | ary[0]: idr object 4 | .... | ary[0]: NULL     |
//     ---------------------------------------------------------------------------------------------------------------------------
//
// (&(&proc_inum_ida)->idr)->id_free: kmem_cache#21-oX (idr object new 2)
// (&(&proc_inum_ida)->idr)->id_free_cnt: 8
//
// (&(&proc_inum_ida)->idr)->top: kmem_cache#21-oX (struct idr_layer) (idr object 8)
// (&(&proc_inum_ida)->idr)->layers: 1
// (&(&proc_inum_ida)->idr)->id_free: (idr object new 0)
// (&(&proc_inum_ida)->idr)->id_free_cnt: 7
//
// (kmem_cache#27-oX (struct ida_bitmap))->bitmap 의 2 bit를 1로 set 수행
// (kmem_cache#27-oX (struct ida_bitmap))->nr_busy: 3
//
// kmem_cache인 kmem_cache#21 에서 할당한 object인 kmem_cache#21-oX (idr object new 2) 의 memory 공간을 반환함
//
// (kmem_cache#29-oX (struct proc_dir_entry))->low_ino: 0xF0000002
// (kmem_cache#29-oX (struct proc_dir_entry))->proc_iops: &proc_link_inode_operations
// (kmem_cache#29-oX (struct proc_dir_entry))->next: NULL
// (kmem_cache#29-oX (struct proc_dir_entry))->parent: &proc_root
//
// (&proc_root)->subdir: kmem_cache#29-oX (struct proc_dir_entry)

// proc_net_init(): 0
proc_net_init();

// proc_net_init 에서 한일:
// struct proc_dir_entry 만큼 메모리를 할당 받음 kmem_cache#29-oX (struct proc_dir_entry)
//
// (kmem_cache#29-oX (struct proc_dir_entry))->name: "net"
// (kmem_cache#29-oX (struct proc_dir_entry))->namelen: 3
// (kmem_cache#29-oX (struct proc_dir_entry))->mode: 0120777
// (kmem_cache#29-oX (struct proc_dir_entry))->nlink: 1
// (&(kmem_cache#29-oX (struct proc_dir_entry))->count)->counter: 1
// &(kmem_cache#29-oX (struct proc_dir_entry))->pde_unload_lock을 이용한 spin lock 초기화 수행
// ((&(kmem_cache#29-oX (struct proc_dir_entry))->pde_unload_lock)->rlock)->raw_lock: { { 0 } }
// ((&(kmem_cache#29-oX (struct proc_dir_entry))->pde_unload_lock)->rlock)->magic: 0xdead4ead
// ((&(kmem_cache#29-oX (struct proc_dir_entry))->pde_unload_lock)->rlock)->owner: 0xffffffff
// ((&(kmem_cache#29-oX (struct proc_dir_entry))->pde_unload_lock)->rlock)->owner_cpu: 0xffffffff
// &(kmem_cache#29-oX (struct proc_dir_entry))->pde_openers->i_sb_list->next: &(kmem_cache#29-oX (struct proc_dir_entry))->pde_openers->i_sb_list
// &(kmem_cache#29-oX (struct proc_dir_entry))->pde_openers->i_sb_list->prev: &(kmem_cache#29-oX (struct proc_dir_entry))->pde_openers->i_sb_list
//
// parent: &proc_root
//
// (kmem_cache#29-oX (struct proc_dir_entry))->data: kmem_cache#30-oX: "self/net"
//
// idr_layer_cache를 사용하여 struct idr_layer 의 메모리 kmem_cache#21-oX를 1 개를 할당 받음
//
// (&(&proc_inum_ida)->idr)->id_free 이 idr object new 3번을 가르킴
// |
// |-> ---------------------------------------------------------------------------------------------------------------------------
//     | idr object new 3         | idr object new 0     | idr object 6         | idr object 5         | .... | idr object 0     |
//     ---------------------------------------------------------------------------------------------------------------------------
//     | ary[0]: idr object new 0 | ary[0]: idr object 6 | ary[0]: idr object 5 | ary[0]: idr object 4 | .... | ary[0]: NULL     |
//     ---------------------------------------------------------------------------------------------------------------------------
//
// (&(&proc_inum_ida)->idr)->id_free: kmem_cache#21-oX (idr object new 3)
// (&(&proc_inum_ida)->idr)->id_free_cnt: 8
//
// (&(&proc_inum_ida)->idr)->top: kmem_cache#21-oX (struct idr_layer) (idr object 8)
// (&(&proc_inum_ida)->idr)->layers: 1
// (&(&proc_inum_ida)->idr)->id_free: (idr object new 0)
// (&(&proc_inum_ida)->idr)->id_free_cnt: 7
//
// (kmem_cache#27-oX (struct ida_bitmap))->bitmap 의 3 bit를 1로 set 수행
// (kmem_cache#27-oX (struct ida_bitmap))->nr_busy: 4
//
// kmem_cache인 kmem_cache#21 에서 할당한 object인 kmem_cache#21-oX (idr object new 3) 의 memory 공간을 반환함
//
// (kmem_cache#29-oX (struct proc_dir_entry))->low_ino: 0xF0000003
// (kmem_cache#29-oX (struct proc_dir_entry))->proc_iops: &proc_link_inode_operations
// (kmem_cache#29-oX (struct proc_dir_entry))->next: NULL
// (kmem_cache#29-oX (struct proc_dir_entry))->parent: &proc_root
//
// (&proc_root)->subdir: kmem_cache#29-oX (struct proc_dir_entry)
//
// list head 인 &pernet_list 에 &(&proc_net_ns_ops)->list 을 tail로 추가함

#ifdef CONFIG_SYSVIPC // CONFIG_SYSVIPC=y // proc_mkdir("sysvipc", NULL): kmem_cache#29-oX (struct proc_dir_entry) proc_mkdir("sysvipc", NULL);

// proc_mkdir 에서 한일:
// struct proc_dir_entry 만큼 메모리를 할당 받음 kmem_cache#29-oX (struct proc_dir_entry)
//
// (kmem_cache#29-oX (struct proc_dir_entry))->name: "sysvipc"
// (kmem_cache#29-oX (struct proc_dir_entry))->namelen: 7
// (kmem_cache#29-oX (struct proc_dir_entry))->mode: 0040555
// (kmem_cache#29-oX (struct proc_dir_entry))->nlink: 2
// (&(kmem_cache#29-oX (struct proc_dir_entry))->count)->counter: 1
// &(kmem_cache#29-oX (struct proc_dir_entry))->pde_unload_lock을 이용한 spin lock 초기화 수행
// ((&(kmem_cache#29-oX (struct proc_dir_entry))->pde_unload_lock)->rlock)->raw_lock: { { 0 } }
// ((&(kmem_cache#29-oX (struct proc_dir_entry))->pde_unload_lock)->rlock)->magic: 0xdead4ead
// ((&(kmem_cache#29-oX (struct proc_dir_entry))->pde_unload_lock)->rlock)->owner: 0xffffffff
// ((&(kmem_cache#29-oX (struct proc_dir_entry))->pde_unload_lock)->rlock)->owner_cpu: 0xffffffff
// &(kmem_cache#29-oX (struct proc_dir_entry))->pde_openers->i_sb_list->next: &(kmem_cache#29-oX (struct proc_dir_entry))->pde_openers->i_sb_list
// &(kmem_cache#29-oX (struct proc_dir_entry))->pde_openers->i_sb_list->prev: &(kmem_cache#29-oX (struct proc_dir_entry))->pde_openers->i_sb_list
//
// parent: &proc_root

#endif // proc_mkdir("fs", NULL): kmem_cache#29-oX (struct proc_dir_entry) proc_mkdir("fs", NULL);

// proc_mkdir 에서 한일:
// struct proc_dir_entry 만큼 메모리를 할당 받음 kmem_cache#29-oX (struct proc_dir_entry)
//
// (kmem_cache#29-oX (struct proc_dir_entry))->name: "fs"
// (kmem_cache#29-oX (struct proc_dir_entry))->namelen: 2
// (kmem_cache#29-oX (struct proc_dir_entry))->mode: 0040555
// (kmem_cache#29-oX (struct proc_dir_entry))->nlink: 2
// (&(kmem_cache#29-oX (struct proc_dir_entry))->count)->counter: 1
// &(kmem_cache#29-oX (struct proc_dir_entry))->pde_unload_lock을 이용한 spin lock 초기화 수행
// ((&(kmem_cache#29-oX (struct proc_dir_entry))->pde_unload_lock)->rlock)->raw_lock: { { 0 } }
// ((&(kmem_cache#29-oX (struct proc_dir_entry))->pde_unload_lock)->rlock)->magic: 0xdead4ead
// ((&(kmem_cache#29-oX (struct proc_dir_entry))->pde_unload_lock)->rlock)->owner: 0xffffffff
// ((&(kmem_cache#29-oX (struct proc_dir_entry))->pde_unload_lock)->rlock)->owner_cpu: 0xffffffff
// &(kmem_cache#29-oX (struct proc_dir_entry))->pde_openers->i_sb_list->next: &(kmem_cache#29-oX (struct proc_dir_entry))->pde_openers->i_sb_list
// &(kmem_cache#29-oX (struct proc_dir_entry))->pde_openers->i_sb_list->prev: &(kmem_cache#29-oX (struct proc_dir_entry))->pde_openers->i_sb_list
//
// parent: &proc_root

// proc_mkdir("driver", NULL): kmem_cache#29-oX (struct proc_dir_entry)
proc_mkdir("driver", NULL);

// proc_mkdir 에서 한일:
// struct proc_dir_entry 만큼 메모리를 할당 받음 kmem_cache#29-oX (struct proc_dir_entry)
//
// (kmem_cache#29-oX (struct proc_dir_entry))->name: "driver"
// (kmem_cache#29-oX (struct proc_dir_entry))->namelen: 6
// (kmem_cache#29-oX (struct proc_dir_entry))->mode: 0040555
// (kmem_cache#29-oX (struct proc_dir_entry))->nlink: 2
// (&(kmem_cache#29-oX (struct proc_dir_entry))->count)->counter: 1
// &(kmem_cache#29-oX (struct proc_dir_entry))->pde_unload_lock을 이용한 spin lock 초기화 수행
// ((&(kmem_cache#29-oX (struct proc_dir_entry))->pde_unload_lock)->rlock)->raw_lock: { { 0 } }
// ((&(kmem_cache#29-oX (struct proc_dir_entry))->pde_unload_lock)->rlock)->magic: 0xdead4ead
// ((&(kmem_cache#29-oX (struct proc_dir_entry))->pde_unload_lock)->rlock)->owner: 0xffffffff
// ((&(kmem_cache#29-oX (struct proc_dir_entry))->pde_unload_lock)->rlock)->owner_cpu: 0xffffffff
// &(kmem_cache#29-oX (struct proc_dir_entry))->pde_openers->i_sb_list->next: &(kmem_cache#29-oX (struct proc_dir_entry))->pde_openers->i_sb_list
// &(kmem_cache#29-oX (struct proc_dir_entry))->pde_openers->i_sb_list->prev: &(kmem_cache#29-oX (struct proc_dir_entry))->pde_openers->i_sb_list
//
// parent: &proc_root

// proc_mkdir("fs/nfsd", NULL): kmem_cache#29-oX (struct proc_dir_entry)
proc_mkdir("fs/nfsd", NULL); /* somewhere for the nfsd filesystem to be mounted */

// proc_mkdir 에서 한일:
// struct proc_dir_entry 만큼 메모리를 할당 받음 kmem_cache#29-oX (struct proc_dir_entry)
//
// (kmem_cache#29-oX (struct proc_dir_entry))->name: "fs/nfsd"
// (kmem_cache#29-oX (struct proc_dir_entry))->namelen: 7
// (kmem_cache#29-oX (struct proc_dir_entry))->mode: 0040555
// (kmem_cache#29-oX (struct proc_dir_entry))->nlink: 2
// (&(kmem_cache#29-oX (struct proc_dir_entry))->count)->counter: 1
// &(kmem_cache#29-oX (struct proc_dir_entry))->pde_unload_lock을 이용한 spin lock 초기화 수행
// ((&(kmem_cache#29-oX (struct proc_dir_entry))->pde_unload_lock)->rlock)->raw_lock: { { 0 } }
// ((&(kmem_cache#29-oX (struct proc_dir_entry))->pde_unload_lock)->rlock)->magic: 0xdead4ead
// ((&(kmem_cache#29-oX (struct proc_dir_entry))->pde_unload_lock)->rlock)->owner: 0xffffffff
// ((&(kmem_cache#29-oX (struct proc_dir_entry))->pde_unload_lock)->rlock)->owner_cpu: 0xffffffff
// &(kmem_cache#29-oX (struct proc_dir_entry))->pde_openers->i_sb_list->next: &(kmem_cache#29-oX (struct proc_dir_entry))->pde_openers->i_sb_list
// &(kmem_cache#29-oX (struct proc_dir_entry))->pde_openers->i_sb_list->prev: &(kmem_cache#29-oX (struct proc_dir_entry))->pde_openers->i_sb_list
//
// parent: &proc_root

#if defined(CONFIG_SUN_OPENPROMFS) || defined(CONFIG_SUN_OPENPROMFS_MODULE) // CONFIG_SUN_OPENPROMFS=n, CONFIG_SUN_OPENPROMFS_MODULE=n /* just give it a mountpoint */ proc_mkdir("openprom", NULL); #endif proc_tty_init();

// proc_tty_init 에서 한일:
// struct proc_dir_entry 만큼 메모리를 할당 받음 kmem_cache#29-oX (struct proc_dir_entry)
//
// (kmem_cache#29-oX (struct proc_dir_entry))->name: "tty"
// (kmem_cache#29-oX (struct proc_dir_entry))->namelen: 3
// (kmem_cache#29-oX (struct proc_dir_entry))->mode: 0040555
// (kmem_cache#29-oX (struct proc_dir_entry))->nlink: 2
// (&(kmem_cache#29-oX (struct proc_dir_entry))->count)->counter: 1
// &(kmem_cache#29-oX (struct proc_dir_entry))->pde_unload_lock을 이용한 spin lock 초기화 수행
// ((&(kmem_cache#29-oX (struct proc_dir_entry))->pde_unload_lock)->rlock)->raw_lock: { { 0 } }
// ((&(kmem_cache#29-oX (struct proc_dir_entry))->pde_unload_lock)->rlock)->magic: 0xdead4ead
// ((&(kmem_cache#29-oX (struct proc_dir_entry))->pde_unload_lock)->rlock)->owner: 0xffffffff
// ((&(kmem_cache#29-oX (struct proc_dir_entry))->pde_unload_lock)->rlock)->owner_cpu: 0xffffffff
// &(kmem_cache#29-oX (struct proc_dir_entry))->pde_openers->i_sb_list->next: &(kmem_cache#29-oX (struct proc_dir_entry))->pde_openers->i_sb_list
// &(kmem_cache#29-oX (struct proc_dir_entry))->pde_openers->i_sb_list->prev: &(kmem_cache#29-oX (struct proc_dir_entry))->pde_openers->i_sb_list
//
// parent: &proc_root
//
// struct proc_dir_entry 만큼 메모리를 할당 받음 kmem_cache#29-oX (struct proc_dir_entry)
//
// (kmem_cache#29-oX (struct proc_dir_entry))->name: "tty/ldisc"
// (kmem_cache#29-oX (struct proc_dir_entry))->namelen: 9
// (kmem_cache#29-oX (struct proc_dir_entry))->mode: 0040555
// (kmem_cache#29-oX (struct proc_dir_entry))->nlink: 2
// (&(kmem_cache#29-oX (struct proc_dir_entry))->count)->counter: 1
// &(kmem_cache#29-oX (struct proc_dir_entry))->pde_unload_lock을 이용한 spin lock 초기화 수행
// ((&(kmem_cache#29-oX (struct proc_dir_entry))->pde_unload_lock)->rlock)->raw_lock: { { 0 } }
// ((&(kmem_cache#29-oX (struct proc_dir_entry))->pde_unload_lock)->rlock)->magic: 0xdead4ead
// ((&(kmem_cache#29-oX (struct proc_dir_entry))->pde_unload_lock)->rlock)->owner: 0xffffffff
// ((&(kmem_cache#29-oX (struct proc_dir_entry))->pde_unload_lock)->rlock)->owner_cpu: 0xffffffff
// &(kmem_cache#29-oX (struct proc_dir_entry))->pde_openers->i_sb_list->next: &(kmem_cache#29-oX (struct proc_dir_entry))->pde_openers->i_sb_list
// &(kmem_cache#29-oX (struct proc_dir_entry))->pde_openers->i_sb_list->prev: &(kmem_cache#29-oX (struct proc_dir_entry))->pde_openers->i_sb_list
//
// parent: &proc_root
//
// struct proc_dir_entry 만큼 메모리를 할당 받음 kmem_cache#29-oX (struct proc_dir_entry)
//
// (kmem_cache#29-oX (struct proc_dir_entry))->name: "tty/driver"
// (kmem_cache#29-oX (struct proc_dir_entry))->namelen: 10
// (kmem_cache#29-oX (struct proc_dir_entry))->mode: 00500
// (kmem_cache#29-oX (struct proc_dir_entry))->nlink: 2
// (&(kmem_cache#29-oX (struct proc_dir_entry))->count)->counter: 1
// &(kmem_cache#29-oX (struct proc_dir_entry))->pde_unload_lock을 이용한 spin lock 초기화 수행
// ((&(kmem_cache#29-oX (struct proc_dir_entry))->pde_unload_lock)->rlock)->raw_lock: { { 0 } }
// ((&(kmem_cache#29-oX (struct proc_dir_entry))->pde_unload_lock)->rlock)->magic: 0xdead4ead
// ((&(kmem_cache#29-oX (struct proc_dir_entry))->pde_unload_lock)->rlock)->owner: 0xffffffff
// ((&(kmem_cache#29-oX (struct proc_dir_entry))->pde_unload_lock)->rlock)->owner_cpu: 0xffffffff
// &(kmem_cache#29-oX (struct proc_dir_entry))->pde_openers->i_sb_list->next: &(kmem_cache#29-oX (struct proc_dir_entry))->pde_openers->i_sb_list
// &(kmem_cache#29-oX (struct proc_dir_entry))->pde_openers->i_sb_list->prev: &(kmem_cache#29-oX (struct proc_dir_entry))->pde_openers->i_sb_list
//
// parent: &proc_root
//
// struct proc_dir_entry 만큼 메모리를 할당 받음 kmem_cache#29-oX (struct proc_dir_entry)
//
// (kmem_cache#29-oX (struct proc_dir_entry))->name: "tty/ldiscs"
// (kmem_cache#29-oX (struct proc_dir_entry))->namelen: 10
// (kmem_cache#29-oX (struct proc_dir_entry))->mode: 0100444
// (kmem_cache#29-oX (struct proc_dir_entry))->nlink: 1
// (&(kmem_cache#29-oX (struct proc_dir_entry))->count)->counter: 1
// &(kmem_cache#29-oX (struct proc_dir_entry))->pde_unload_lock을 이용한 spin lock 초기화 수행
// ((&(kmem_cache#29-oX (struct proc_dir_entry))->pde_unload_lock)->rlock)->raw_lock: { { 0 } }
// ((&(kmem_cache#29-oX (struct proc_dir_entry))->pde_unload_lock)->rlock)->magic: 0xdead4ead
// ((&(kmem_cache#29-oX (struct proc_dir_entry))->pde_unload_lock)->rlock)->owner: 0xffffffff
// ((&(kmem_cache#29-oX (struct proc_dir_entry))->pde_unload_lock)->rlock)->owner_cpu: 0xffffffff
// &(kmem_cache#29-oX (struct proc_dir_entry))->pde_openers->i_sb_list->next: &(kmem_cache#29-oX (struct proc_dir_entry))->pde_openers->i_sb_list
// &(kmem_cache#29-oX (struct proc_dir_entry))->pde_openers->i_sb_list->prev: &(kmem_cache#29-oX (struct proc_dir_entry))->pde_openers->i_sb_list
//
// parent: &proc_root
//
// (kmem_cache#29-oX (struct proc_dir_entry))->proc_fops: &tty_ldiscs_proc_fops
// (kmem_cache#29-oX (struct proc_dir_entry))->data: NULL
//
// idr_layer_cache를 사용하여 struct idr_layer 의 메모리 kmem_cache#21-oX를 1 개를 할당 받음
//
// (&(&proc_inum_ida)->idr)->id_free 이 idr object new 4번을 가르킴
// |
// |-> ---------------------------------------------------------------------------------------------------------------------------
//     | idr object new 4         | idr object new 0     | idr object 6         | idr object 5         | .... | idr object 0     |
//     ---------------------------------------------------------------------------------------------------------------------------
//     | ary[0]: idr object new 0 | ary[0]: idr object 6 | ary[0]: idr object 5 | ary[0]: idr object 4 | .... | ary[0]: NULL     |
//     ---------------------------------------------------------------------------------------------------------------------------
//
// (&(&proc_inum_ida)->idr)->id_free: kmem_cache#21-oX (idr object new 4)
// (&(&proc_inum_ida)->idr)->id_free_cnt: 8
//
// (&(&proc_inum_ida)->idr)->top: kmem_cache#21-oX (struct idr_layer) (idr object 8)
// (&(&proc_inum_ida)->idr)->layers: 1
// (&(&proc_inum_ida)->idr)->id_free: (idr object new 0)
// (&(&proc_inum_ida)->idr)->id_free_cnt: 7
//
// (kmem_cache#27-oX (struct ida_bitmap))->bitmap 의 4 bit를 1로 set 수행
// (kmem_cache#27-oX (struct ida_bitmap))->nr_busy: 5
//
// kmem_cache인 kmem_cache#21 에서 할당한 object인 kmem_cache#21-oX (idr object new 4) 의 memory 공간을 반환함
//
// (kmem_cache#29-oX (struct proc_dir_entry))->low_ino: 0xF0000004
// (kmem_cache#29-oX (struct proc_dir_entry))->proc_iops: &proc_file_inode_operations
// (kmem_cache#29-oX (struct proc_dir_entry))->next: NULL
// (kmem_cache#29-oX (struct proc_dir_entry))->parent: &proc_root
//
// (&proc_root)->subdir: kmem_cache#29-oX (struct proc_dir_entry)
//
// struct proc_dir_entry 만큼 메모리를 할당 받음 kmem_cache#29-oX (struct proc_dir_entry)
//
// (kmem_cache#29-oX (struct proc_dir_entry))->name: "tty/drivers"
// (kmem_cache#29-oX (struct proc_dir_entry))->namelen: 11
// (kmem_cache#29-oX (struct proc_dir_entry))->mode: 0100444
// (kmem_cache#29-oX (struct proc_dir_entry))->nlink: 1
// (&(kmem_cache#29-oX (struct proc_dir_entry))->count)->counter: 1
// &(kmem_cache#29-oX (struct proc_dir_entry))->pde_unload_lock을 이용한 spin lock 초기화 수행
// ((&(kmem_cache#29-oX (struct proc_dir_entry))->pde_unload_lock)->rlock)->raw_lock: { { 0 } }
// ((&(kmem_cache#29-oX (struct proc_dir_entry))->pde_unload_lock)->rlock)->magic: 0xdead4ead
// ((&(kmem_cache#29-oX (struct proc_dir_entry))->pde_unload_lock)->rlock)->owner: 0xffffffff
// ((&(kmem_cache#29-oX (struct proc_dir_entry))->pde_unload_lock)->rlock)->owner_cpu: 0xffffffff
// &(kmem_cache#29-oX (struct proc_dir_entry))->pde_openers->i_sb_list->next: &(kmem_cache#29-oX (struct proc_dir_entry))->pde_openers->i_sb_list
// &(kmem_cache#29-oX (struct proc_dir_entry))->pde_openers->i_sb_list->prev: &(kmem_cache#29-oX (struct proc_dir_entry))->pde_openers->i_sb_list
//
// parent: &proc_root
//
// (kmem_cache#29-oX (struct proc_dir_entry))->proc_fops: &proc_tty_drivers_operations
// (kmem_cache#29-oX (struct proc_dir_entry))->data: NULL
//
// idr_layer_cache를 사용하여 struct idr_layer 의 메모리 kmem_cache#21-oX를 1 개를 할당 받음
//
// (&(&proc_inum_ida)->idr)->id_free 이 idr object new 5번을 가르킴
// |
// |-> ---------------------------------------------------------------------------------------------------------------------------
//     | idr object new 5         | idr object new 0     | idr object 6         | idr object 5         | .... | idr object 0     |
//     ---------------------------------------------------------------------------------------------------------------------------
//     | ary[0]: idr object new 0 | ary[0]: idr object 6 | ary[0]: idr object 5 | ary[0]: idr object 4 | .... | ary[0]: NULL     |
//     ---------------------------------------------------------------------------------------------------------------------------
//
// (&(&proc_inum_ida)->idr)->id_free: kmem_cache#21-oX (idr object new 5)
// (&(&proc_inum_ida)->idr)->id_free_cnt: 8
//
// (&(&proc_inum_ida)->idr)->top: kmem_cache#21-oX (struct idr_layer) (idr object 8)
// (&(&proc_inum_ida)->idr)->layers: 1
// (&(&proc_inum_ida)->idr)->id_free: (idr object new 0)
// (&(&proc_inum_ida)->idr)->id_free_cnt: 7
//
// (kmem_cache#27-oX (struct ida_bitmap))->bitmap 의 5 bit를 1로 set 수행
// (kmem_cache#27-oX (struct ida_bitmap))->nr_busy: 6
//
// kmem_cache인 kmem_cache#21 에서 할당한 object인 kmem_cache#21-oX (idr object new 5) 의 memory 공간을 반환함
//
// (kmem_cache#29-oX (struct proc_dir_entry))->low_ino: 0xF0000005
// (kmem_cache#29-oX (struct proc_dir_entry))->proc_iops: &proc_file_inode_operations
// (kmem_cache#29-oX (struct proc_dir_entry))->next: NULL
// (kmem_cache#29-oX (struct proc_dir_entry))->parent: &proc_root
//
// (&proc_root)->subdir: kmem_cache#29-oX (struct proc_dir_entry)

#ifdef CONFIG_PROC_DEVICETREE // CONFIG_PROC_DEVICETREE=y proc_device_tree_init();

// proc_device_tree_init 에서 한일:
// struct proc_dir_entry 만큼 메모리를 할당 받음 kmem_cache#29-oX (struct proc_dir_entry)
//
// (kmem_cache#29-oX (struct proc_dir_entry))->name: "device-tree"
// (kmem_cache#29-oX (struct proc_dir_entry))->namelen: 11
// (kmem_cache#29-oX (struct proc_dir_entry))->mode: 0040555
// (kmem_cache#29-oX (struct proc_dir_entry))->nlink: 2
// (&(kmem_cache#29-oX (struct proc_dir_entry))->count)->counter: 1
// &(kmem_cache#29-oX (struct proc_dir_entry))->pde_unload_lock을 이용한 spin lock 초기화 수행
// ((&(kmem_cache#29-oX (struct proc_dir_entry))->pde_unload_lock)->rlock)->raw_lock: { { 0 } }
// ((&(kmem_cache#29-oX (struct proc_dir_entry))->pde_unload_lock)->rlock)->magic: 0xdead4ead
// ((&(kmem_cache#29-oX (struct proc_dir_entry))->pde_unload_lock)->rlock)->owner: 0xffffffff
// ((&(kmem_cache#29-oX (struct proc_dir_entry))->pde_unload_lock)->rlock)->owner_cpu: 0xffffffff
// &(kmem_cache#29-oX (struct proc_dir_entry))->pde_openers->i_sb_list->next: &(kmem_cache#29-oX (struct proc_dir_entry))->pde_openers->i_sb_list
// &(kmem_cache#29-oX (struct proc_dir_entry))->pde_openers->i_sb_list->prev: &(kmem_cache#29-oX (struct proc_dir_entry))->pde_openers->i_sb_list
//
// parent: &proc_root
//
// unflatten_device_tree 에서 만든 tree의 root node 의 값을 사용하여proc device tree를 만드는 작업을 수행

#endif proc_mkdir("bus", NULL);

// proc_mkdir 에서 한일:
// struct proc_dir_entry 만큼 메모리를 할당 받음 kmem_cache#29-oX (struct proc_dir_entry)
//
// (kmem_cache#29-oX (struct proc_dir_entry))->name: "bus"
// (kmem_cache#29-oX (struct proc_dir_entry))->namelen: 3
// (kmem_cache#29-oX (struct proc_dir_entry))->mode: 0040555
// (kmem_cache#29-oX (struct proc_dir_entry))->nlink: 2
// (&(kmem_cache#29-oX (struct proc_dir_entry))->count)->counter: 1
// &(kmem_cache#29-oX (struct proc_dir_entry))->pde_unload_lock을 이용한 spin lock 초기화 수행
// ((&(kmem_cache#29-oX (struct proc_dir_entry))->pde_unload_lock)->rlock)->raw_lock: { { 0 } }
// ((&(kmem_cache#29-oX (struct proc_dir_entry))->pde_unload_lock)->rlock)->magic: 0xdead4ead
// ((&(kmem_cache#29-oX (struct proc_dir_entry))->pde_unload_lock)->rlock)->owner: 0xffffffff
// ((&(kmem_cache#29-oX (struct proc_dir_entry))->pde_unload_lock)->rlock)->owner_cpu: 0xffffffff
// &(kmem_cache#29-oX (struct proc_dir_entry))->pde_openers->i_sb_list->next: &(kmem_cache#29-oX (struct proc_dir_entry))->pde_openers->i_sb_list
// &(kmem_cache#29-oX (struct proc_dir_entry))->pde_openers->i_sb_list->prev: &(kmem_cache#29-oX (struct proc_dir_entry))->pde_openers->i_sb_list
//
// parent: &proc_root

proc_sys_init();

}


# start_kernel()

* call: start_kernel()
 - lockdep_init()
 - smp_setup_processor_id()
 - debug_objects_early_init()
 - boot_init_stack_canary()
 - cgroup_init_early()
 - local_irq_disable()
 - boot_cpu_init()
 - page_address_init()
 - pr_notice()
 - setup_arch()
 - mm_init_owner()
 - mm_init_cpumask()
 - setup_command_line
 - build_all_zonelists()
 - page_alloc_init()
 - pr_notice()
 - parse_early_param()
 - parse_args()
 - jump_label_init()
 - setup_log_buf()
 - pidhash_init()
 - vfs_caches_init_early()
 - sort_main_extable()
 - trap_init()
 - mm_init()
 - sched_init()
 - preempt_disable()
 - irqs_disabled()
 - local_irq_disabled()
 - idr_init_cache()
 - rcu_init()
 - tick_nohz_init()
 - contect_tracking_init()
 - radix_tree_init()
 - early_irq_init()
 - init_IRQ()
 - tick_init()
 - init_timers()
 - hrtimers_init()
 - softirq_init()
 - timekeeping_init()
 - time_init()
 - sched_clock_postinit()
 - pref_event_init()
 - profile_init()
 - call_function_init()
 - irqs_disabled()
 - local_irq_enabled()
 - kmem_cache_init_late()
 - console_init()
 - lockdep_init()
 - lockdep_info()
 - locking_selftest()
 - virt_to_page()
 - page_to_pfn()
 - page_cgroup_init()
 - debug_objects_mem_init()
 - kmemleak_init()
 - setup_per_cpu_pageset()
 - numa_policy_init()
 - sched_clock_init()
 - calibrate_delay()
 - pidmap_init()
 - anon_vma_init()
 - thread_info_cache_init()
 - cred_init()
 - fork_init()
 - proc_caches_init()
 - buffer_init()
 - key_init()
 - security_init()
 - dbg_late_init()
 - vfs_caches_init()
 - signals_init()
 - page_writeback_init()
 - proc_root_init()

// ARM10C 20130824 asmlinkage void __init start_kernel(void) { char * command_line; extern const struct kernel_param __start___param[], __stop___param[]; // ATAG,DTB 정보로 사용

/*
 * Need to run as early as possible, to initialize the
 * lockdep hash:
 */
lockdep_init();
smp_setup_processor_id();
debug_objects_early_init();

/*
 * Set up the the initial canary ASAP:
 */
boot_init_stack_canary();

cgroup_init_early();
// cgroup 를 사용하기 위한 cgroup_dummy_root, cgroup_subsys 의 구조체 초기화 수행

local_irq_disable();
// IRQ를 disable 함

early_boot_irqs_disabled = true;
// early_boot_irqs_disabled: true

/*

Interrupts are still disabled. Do necessary setups, then
enable them */ boot_cpu_init(); // 현재 cpu(core id)를 얻어서 cpu_XXX_bits[] 의 cpu를 셋한다.

page_address_init(); // 128개의 page_address_htable 배열을 초기화

pr_notice("%s", linux_banner); // 배너: // Linux version 2.6.37_DM385_IPNC_3.50.00 // (a0875405@bangvideoapps01) (gcc version 4.5.3 20110311 // (prerelease) (GCC) ) #1 Fri Dec 21 17:27:08 IST 2012

setup_arch(&command_line);

mm_init_owner(&init_mm, &init_task); // null function mm_init_cpumask(&init_mm); // null function

// command_line: exynos5420-smdk5420.dts 파일의 chosen node 의 bootarg 값 // "console=ttySAC2,115200 init=/linuxrc" setup_command_line(command_line); // saved_command_line 및 static_command_line 할당

setup_nr_cpu_ids(); setup_per_cpu_areas(); // pcpu 구조체를 만들어 줌 (mm/percpu.c)

smp_prepare_boot_cpu(); /* arch-specific boot-cpu hooks */ // boot cpu 0의 pcpu 영역의 base주소를 core register에 설정해줌

build_all_zonelists(NULL, NULL);

page_alloc_init(); // cpu_chain에 page_alloc_cpu_notify를 연결함 (mutex lock/unlock 사용)

// boot_command_line: "console=ttySAC2,115200 init=/linuxrc" pr_notice("Kernel command line: %s\n", boot_command_line); // "Kernel command line: console=ttySAC2,115200 init=/linuxrc"

parse_early_param(); // setup_arch에서 수행했던 작업 다시 수행 // command arg에서 각 요소들을 파싱하여 early init section으로 설정된 디바이스 초기화. // 우리는 serial device가 검색이 되지만 config설정은 없어서 아무것도 안함.

// static_command_line: "console=ttySAC2,115200 init=/linuxrc" parse_args("Booting kernel", static_command_line, __start___param, __stop___param - __start___param, -1, -1, &unknown_bootoption); // DTB에서 넘어온 bootargs를 파싱하여 param, val을 뽑아내고 그에 대응되는 // kernel_param 구조체에 값을 등록함.

jump_label_init(); // HAVE_JUMP_LABEL 이 undefined 이므로 NULL 함수

/*
- These use large bootmem allocations and must precede
- kmem_cache_init() */ setup_log_buf(0); // defalut log_buf의 크기는 __LOG_BUF_LEN: 0x20000 (128KB) 임 // early_param 에서 호출했던 log_buf_len 값이 있다면 log_buf의 크기를 넘어온 크기로 만듬
pidhash_init(); // pidhash의 크기를 16kB만큼 할당 받고 4096개의 hash list를 만듬

vfs_caches_init_early(); // Dentry cache, Inode-cache용 hash를 위한 메모리 공간을 각각 512kB, 256kB만큼 할당 받고, // 131072, 65536개 만큼 hash table을 각각 만듬

sort_main_extable(); // extable 을 cmp_ex를 이용하여 sort수행

trap_init(); // null function

mm_init(); // buddy와 slab 을 활성화 하고 기존 할당 받은 bootmem 은 buddy, // pcpu 메모리, vmlist 는 slab으로 이관

/*
- Set up the scheduler prior starting any interrupts (such as the
- timer interrupt). Full topology setup happens at smp_init()
- time - but meanwhile we still have a functioning scheduler. */ sched_init(); // scheduler가 사용하는 자료 구조 초기화, idle_threads를 init_task로 세팅
/*
- Disable preemption - early bootup scheduling is extremely
- fragile until we cpu_idle() for the first time. */ preempt_disable(); // preempt count를 증가시켜 preemption 못하도록 막음
// irqs_disabled(): 1 if (WARN(!irqs_disabled(), "Interrupts were enabled very early, fixing it\n")) local_irq_disable();

idr_init_cache(); // integer ID management로 사용하는 idr_layer_cache에 kmem_cache#21 을 생성 및 초기화 후 할당

rcu_init(); // rcu 자료구조 bh, sched, preempt 를 각각 초기화 수행함

tick_nohz_init(); // null function context_tracking_init(); // null function

radix_tree_init(); // radix tree로 사용하는 radix_tree_node_cachep에 kmem_cache#20을 생성 및 초기화 후 할당하고 // height_to_maxindex을 초기화 수행

/* init some links before init_ISA_irqs() */ early_irq_init(); // irq_desc 0 ~ 15 까지의 object을 할당 받고 초기화를 수행 // allocated_irqs에 bit를 1로 세팅하고 radix tree에 각 irq_desc를 노트로 추가

init_IRQ(); // gic, combiner이 사용할 메모리 할당과 자료 구조 설정, // gic irq (0~~15), combiner irq (32~~63) interrupt 를 enable 시킴

tick_init(); // tick 관련 mask 변수를 0으로 초기화 수행

init_timers(); // boot_tvec_bases의 맴버 값을 초기화하고 timers_nb를 cpu_notifier 에 등록, // softirq_vec[1] 에 run_timer_softirq 등록하여 초기화 수행

hrtimers_init(); // hrtimer_bases의 맴버 값을 초기화하고 hrtimers_nb를 cpu_notifier 에 등록, // softirq_vec[8] 에 run_hrtimer_softirq 등록하여 초기화 수행

softirq_init(); // tasklet_vec, tasklet_hi_vec 맴버 값을 초기화하고, // softirq_vec[6]에 tasklet_action, softirq_vec[0]에 tasklet_hi_action 등록하여 초기화 수행

timekeeping_init(); // ntp 관련 전역변수 초기화, timekeeper, shadow_timekeeper의 맴버값 초기화 수행

time_init(); // timer 를 사용하기 위한 clk source, clk_table 메모리 할당 및 초기화, // timer event를 위한 timer irq (MCT) 초기화 수행

sched_clock_postinit(); // sched_clock_timer을 초기화 수행

perf_event_init(); // null function profile_init(); // null function call_function_init(); // 각 cpu core에서 사용할 call_single_queue를 맴버값 초기화 // cfd_data 맴버값을 초기화하고 pcp에서 사용할 메모리 공간 할당 // cpu_chain에 hotplug_cfd_notifier 를 등록함

// irqs_disabled(): 1 WARN(!irqs_disabled(), "Interrupts were enabled early\n");

// early_boot_irqs_disabled: true early_boot_irqs_disabled = false; // early_boot_irqs_disabled: false

local_irq_enable(); // IRQ를 enable 함

kmem_cache_init_late(); // null function

/*
- HACK ALERT! This is early. We're enabling the console before
- we've done PCI setups etc, and console_init() must be aware of
- this. But we do want output early, in case something goes wrong. */ console_init();
// panic_later: NULL if (panic_later) panic(panic_later, panic_param);

lockdep_info(); // null function

/*
- Need to run this when irqs are enabled, because it wants
- to self-test [hard/soft]-irqs on/off lock inversion bugs
- too: */ locking_selftest(); // null function

#ifdef CONFIG_BLK_DEV_INITRD // CONFIG_BLK_DEV_INITRD=y // initrd_start: NULL, initrd_below_start_ok: 0 if (initrd_start && !initrd_below_start_ok && page_to_pfn(virt_to_page((void *)initrd_start)) < min_low_pfn) { pr_crit("initrd overwritten (0x%08lx < 0x%08lx) - disabling it.\n", page_to_pfn(virt_to_page((void *)initrd_start)), min_low_pfn); initrd_start = 0; } #endif

page_cgroup_init(); // null function
debug_objects_mem_init(); // null function
kmemleak_init(); // null function

setup_per_cpu_pageset();
// per cpu가 사용하는 pageset의 각각의 zone 맴버값 초기화 수행

numa_policy_init(); // null function

// late_time_init: NULL
if (late_time_init)
	late_time_init();

sched_clock_init();
// sched_clock_running 값을 1 로 초기화 수행

calibrate_delay();
// BogoMIPS값을 결정하기위한 계산을 수행하고 결과를 출력함

pidmap_init();
// pidmap 을 사용하기 위한 초기화 수행

anon_vma_init();
// anon vma 를 사용하기 위한 kmem_cache 할당자 초기화 수행

#ifdef CONFIG_X86 // CONFIG_X86=n if (efi_enabled(EFI_RUNTIME_SERVICES)) efi_enter_virtual_mode(); #endif thread_info_cache_init(); // null function cred_init(); // credentials 를 사용하기 위한 kmem_cache 할당자 초기화 수행

// totalram_pages: 총 free된 page 수
fork_init(totalram_pages);
// task_struct 를 사용하기 위한 kmem_cache 할당자 초기화 수행
// max_threads값을 계산하여 init_task에 threads값의 limit 값 설정함

proc_caches_init();
// sighand_struct, signal_struct, files_struct, fs_struct, mm_struct, vm_area_struct, nsproxy
// 를 사용하기 위한 kmem_cache 할당자 및 percpu list 초기화 수행

buffer_init();
// buffer_head 를 사용하기 위한 kmem_cache 할당자 및 max_buffer_heads 값 초기화 수행

key_init(); // null funtion
security_init(); // null funtion
dbg_late_init(); // null funtion

// totalram_pages: 총 free된 page 수
vfs_caches_init(totalram_pages);
// virtual file system을 위한 names, dentry, inode, filp, mount cache 생성 후
// file system 을 위한 초기화 수행 및 mount 수행, block, char dev 사용을 위한 초기화 수행

signals_init();
// signal을 사용하기 위한 kmem_cache 를 생성

/* rootfs populating might need page-writeback */
page_writeback_init();
// page writeback을 위한 global_dirty_limit, ratelimit_pages 값을 초기화 수행

#ifdef CONFIG_PROC_FS // CONFIG_PROC_FS=y proc_root_init(); #endif cgroup_init();


# cgroup_init()

* call: start_kernel()
 - cgroup_init()

```cgroup.c
int __init cgroup_init(void)
{
	struct cgroup_subsys *ss;
	unsigned long key;
	int i, err;

	err = bdi_init(&cgroup_backing_dev_info);

call: bdi_init(&cgroup_backing_dev_info)

bid_init()

call: start_kernel()

cgroup_init()

call: cgroup_init()

bdi_init()

int bdi_init(struct backing_dev_info *bdi)
{
	int i, err;

	// bdi->dev: (&sysfs_backing_dev_info)->dev
	bdi->dev = NULL;
	// bdi->dev: (&sysfs_backing_dev_info)->dev: NULL

	// bdi->min_ratio: (&sysfs_backing_dev_info)->min_ratio
	bdi->min_ratio = 0;
	// bdi->min_ratio: (&sysfs_backing_dev_info)->min_ratio: 0

	// bdi->max_ratio: (&sysfs_backing_dev_info)->max_ratio
	bdi->max_ratio = 100;
	// bdi->max_ratio: (&sysfs_backing_dev_info)->max_ratio: 100

	// bdi->max_prop_frac: (&sysfs_backing_dev_info)->max_prop_frac, FPROP_FRAC_BASE: 0x400
	bdi->max_prop_frac = FPROP_FRAC_BASE;
	// bdi->max_prop_frac: (&sysfs_backing_dev_info)->max_prop_frac: 0x400

	// &bdi->wb_lock: &(&sysfs_backing_dev_info)->wb_lock
	spin_lock_init(&bdi->wb_lock);

	// spin_lock_init 에서 한일:
	// &(&sysfs_backing_dev_info)->wb_lock 을 이용한 spinlock 초기화 수행

	// &bdi->bdi_list: &(&sysfs_backing_dev_info)->bdi_list
	INIT_LIST_HEAD(&bdi->bdi_list);

	// INIT_LIST_HEAD에서 한일:
	// (&(&sysfs_backing_dev_info)->bdi_list)->next: &(&sysfs_backing_dev_info)->bdi_list
	// (&(&sysfs_backing_dev_info)->bdi_list)->prev: &(&sysfs_backing_dev_info)->bdi_list

	// &bdi->work_list: &(&sysfs_backing_dev_info)->work_list
	INIT_LIST_HEAD(&bdi->work_list);

	// INIT_LIST_HEAD에서 한일:
	// (&(&sysfs_backing_dev_info)->work_list)->next: &(&sysfs_backing_dev_info)->work_list
	// (&(&sysfs_backing_dev_info)->work_list)->prev: &(&sysfs_backing_dev_info)->work_list

	// &bdi->wb: &(&sysfs_backing_dev_info)->wb, bdi: &sysfs_backing_dev_info
	bdi_wb_init(&bdi->wb, bdi);

	// bdi_wb_init에서 한일:
	// (&sysfs_backing_dev_info)->wb 의 맴버값을 0으로 초기화함
	// (&(&sysfs_backing_dev_info)->wb)->bdi: &sysfs_backing_dev_info
	// (&(&sysfs_backing_dev_info)->wb)->last_old_flush: XXX
	// (&(&(&sysfs_backing_dev_info)->wb)->b_dirty)->next: &(&(&sysfs_backing_dev_info)->wb)->b_dirty
	// (&(&(&sysfs_backing_dev_info)->wb)->b_dirty)->prev: &(&(&sysfs_backing_dev_info)->wb)->b_dirty
	// (&(&(&sysfs_backing_dev_info)->wb)->b_io)->next: &(&(&sysfs_backing_dev_info)->wb)->b_io
	// (&(&(&sysfs_backing_dev_info)->wb)->b_io)->prev: &(&(&sysfs_backing_dev_info)->wb)->b_io
	// (&(&(&sysfs_backing_dev_info)->wb)->b_more_io)->next: &(&(&sysfs_backing_dev_info)->wb)->b_more_io
	// (&(&(&sysfs_backing_dev_info)->wb)->b_more_io)->prev: &(&(&sysfs_backing_dev_info)->wb)->b_more_io
	// &(&(&sysfs_backing_dev_info)->wb)->list_lock 을 이용한 spinlock 초기화 수행
	// (&(&(&(&sysfs_backing_dev_info)->wb)->dwork)->work)->data: { 0xFFFFFFE0 }
	// (&(&(&(&(&sysfs_backing_dev_info)->wb)->dwork)->work)->entry)->next: &(&(&(&(&sysfs_backing_dev_info)->wb)->dwork)->work)->entry
	// (&(&(&(&(&sysfs_backing_dev_info)->wb)->dwork)->work)->entry)->prev: &(&(&(&(&sysfs_backing_dev_info)->wb)->dwork)->work)->entry
	// (&(&(&(&sysfs_backing_dev_info)->wb)->dwork)->work)->func: bdi_writeback_workfn
	// (&(&(&(&sysfs_backing_dev_info)->wb)->dwork)->timer)->entry.next: NULL
	// (&(&(&(&sysfs_backing_dev_info)->wb)->dwork)->timer)->base: [pcp0] tvec_bases | 0x2
	// (&(&(&(&sysfs_backing_dev_info)->wb)->dwork)->timer)->slack: -1
	// (&(&(&(&sysfs_backing_dev_info)->wb)->dwork)->timer)->function = (delayed_work_timer_fn);
	// (&(&(&(&sysfs_backing_dev_info)->wb)->dwork)->timer)->data = ((unsigned long)(&(&(&sysfs_backing_dev_info)->wb)->dwork));

	// NR_BDI_STAT_ITEMS: 4
	for (i = 0; i < NR_BDI_STAT_ITEMS; i++) {
		// i: 0, &bdi->bdi_stat[0]: &(&sysfs_backing_dev_info)->bdi_stat[0]
		// percpu_counter_init(&(&sysfs_backing_dev_info)->bdi_stat[0], 0): 0
		err = percpu_counter_init(&bdi->bdi_stat[i], 0);
		// err: 0

		// percpu_counter_init에서 한일:
		// (&(&(&(&(&sysfs_backing_dev_info)->bdi_stat[0])->lock)->wait_lock)->rlock)->raw_lock: { { 0 } }
		// (&(&(&(&(&sysfs_backing_dev_info)->bdi_stat[0])->lock)->wait_lock)->rlock)->magic: 0xdead4ead
		// (&(&(&(&(&sysfs_backing_dev_info)->bdi_stat[0])->lock)->wait_lock)->rlock)->owner: 0xffffffff
		// (&(&(&(&(&sysfs_backing_dev_info)->bdi_stat[0])->lock)->wait_lock)->rlock)->owner_cpu: 0xffffffff
		// (&(&(&sysfs_backing_dev_info)->bdi_stat[0])->list)->next: &(&(&sysfs_backing_dev_info)->bdi_stat[0])->list
		// (&(&(&sysfs_backing_dev_info)->bdi_stat[0])->list)->prev: &(&(&sysfs_backing_dev_info)->bdi_stat[0])->list
		// (&(&sysfs_backing_dev_info)->bdi_stat[0])->count: 0
		// (&(&sysfs_backing_dev_info)->bdi_stat[0])->counters: kmem_cache#26-o0 에서 할당된 4 bytes 메모리 주소
		// list head 인 &percpu_counters에 &(&(&sysfs_backing_dev_info)->bdi_stat[0])->list를 연결함

		// err: 0
		if (err)
			goto err;

		// i: 1...3 loop 수행
	}

	// bdi->dirty_exceeded: (&sysfs_backing_dev_info)->dirty_exceeded
	bdi->dirty_exceeded = 0;
	// bdi->dirty_exceeded: (&sysfs_backing_dev_info)->dirty_exceeded: 0

	// bdi->bw_time_stamp: (&sysfs_backing_dev_info)->bw_time_stamp, jiffies: XXX
	bdi->bw_time_stamp = jiffies;
	// bdi->bw_time_stamp: (&sysfs_backing_dev_info)->bw_time_stamp: XXX

	// bdi->written_stamp: (&sysfs_backing_dev_info)->written_stamp
	bdi->written_stamp = 0;
	// bdi->written_stamp: (&sysfs_backing_dev_info)->written_stamp: 0

	// bdi->balanced_dirty_ratelimit: (&sysfs_backing_dev_info)->balanced_dirty_ratelimit, INIT_BW: 0x6400
	bdi->balanced_dirty_ratelimit = INIT_BW;
	// bdi->balanced_dirty_ratelimit: (&sysfs_backing_dev_info)->balanced_dirty_ratelimit: 0x6400

	// bdi->dirty_ratelimit: (&sysfs_backing_dev_info)->dirty_ratelimit, INIT_BW: 0x6400
	bdi->dirty_ratelimit = INIT_BW;
	// bdi->dirty_ratelimit: (&sysfs_backing_dev_info)->dirty_ratelimit: 0x6400

	// bdi->write_bandwidth: (&sysfs_backing_dev_info)->write_bandwidth, INIT_BW: 0x6400
	bdi->write_bandwidth = INIT_BW;
	// bdi->write_bandwidth: (&sysfs_backing_dev_info)->write_bandwidth: 0x6400

	// bdi->avg_write_bandwidth: (&sysfs_backing_dev_info)->avg_write_bandwidth, INIT_BW: 0x6400
	bdi->avg_write_bandwidth = INIT_BW;
	// bdi->avg_write_bandwidth: (&sysfs_backing_dev_info)->avg_write_bandwidth: 0x6400

	// &bdi->completions: &(&sysfs_backing_dev_info)->completions
	// fprop_local_init_percpu(&(&sysfs_backing_dev_info)->completions): 0
	err = fprop_local_init_percpu(&bdi->completions);
	// err: 0

	// fprop_local_init_percpu에서 한일:
	// (&(&(&(&(&(&sysfs_backing_dev_info)->completions)->events)->lock)->wait_lock)->rlock)->raw_lock: { { 0 } }
	// (&(&(&(&(&(&sysfs_backing_dev_info)->completions)->events)->lock)->wait_lock)->rlock)->magic: 0xdead4ead
	// (&(&(&(&(&(&sysfs_backing_dev_info)->completions)->events)->lock)->wait_lock)->rlock)->owner: 0xffffffff
	// (&(&(&(&(&(&sysfs_backing_dev_info)->completions)->events)->lock)->wait_lock)->rlock)->owner_cpu: 0xffffffff
	// (&(&(&(&sysfs_backing_dev_info)->completions)->events)->list)->next: &(&(&(&sysfs_backing_dev_info)->completions)->events)->list
	// (&(&(&(&sysfs_backing_dev_info)->completions)->events)->list)->prev: &(&(&(&sysfs_backing_dev_info)->completions)->events)->list
	// (&(&(&sysfs_backing_dev_info)->completions)->events)->count: 0
	// (&(&(&sysfs_backing_dev_info)->completions)->events)->counters: kmem_cache#26-o0 에서 할당된 4 bytes 메모리 주소
	// list head 인 &percpu_counters에 &(&(&(&sysfs_backing_dev_info)->completions)->events)->list를 연결함
	// (&(&sysfs_backing_dev_info)->completions)->period: 0
	// &(&(&sysfs_backing_dev_info)->completions)->lock을 이용한 spinlock 초기화 수행

	// err: 0
	if (err) {
err:
		while (i--)
			percpu_counter_destroy(&bdi->bdi_stat[i]);
	}

	// err: 0
	return err;
	// return 0
}
EXPORT_SYMBOL(bdi_init);

cgroup_init()

call: start_kernel()

cgroup_init()

call: cgroup_init()

bdi_init()

struct cgroup_subsys

struct cgroup_subsys {
	struct cgroup_subsys_state *(*css_alloc)(struct cgroup_subsys_state *parent_css);
	int (*css_online)(struct cgroup_subsys_state *css);
	void (*css_offline)(struct cgroup_subsys_state *css);
	void (*css_free)(struct cgroup_subsys_state *css);

	int (*can_attach)(struct cgroup_subsys_state *css,
			  struct cgroup_taskset *tset);
	void (*cancel_attach)(struct cgroup_subsys_state *css,
			      struct cgroup_taskset *tset);
	void (*attach)(struct cgroup_subsys_state *css,
		       struct cgroup_taskset *tset);
	void (*fork)(struct task_struct *task);
	void (*exit)(struct cgroup_subsys_state *css,
		     struct cgroup_subsys_state *old_css,
		     struct task_struct *task);
	void (*bind)(struct cgroup_subsys_state *root_css);

	int subsys_id;
	int disabled;
	int early_init;

	/*
	 * If %false, this subsystem is properly hierarchical -
	 * configuration, resource accounting and restriction on a parent
	 * cgroup cover those of its children.  If %true, hierarchy support
	 * is broken in some ways - some subsystems ignore hierarchy
	 * completely while others are only implemented half-way.
	 *
	 * It's now disallowed to create nested cgroups if the subsystem is
	 * broken and cgroup core will emit a warning message on such
	 * cases.  Eventually, all subsystems will be made properly
	 * hierarchical and this will go away.
	 */
	bool broken_hierarchy;
	bool warned_broken_hierarchy;

// ARM10C 20150822
// MAX_CGROUP_TYPE_NAMELEN: 32
#define MAX_CGROUP_TYPE_NAMELEN 32
	const char *name;

	/*
	 * Link to parent, and list entry in parent's children.
	 * Protected by cgroup_lock()
	 */
	struct cgroupfs_root *root;
	struct list_head sibling;

	/* list of cftype_sets */
	struct list_head cftsets;

	/* base cftypes, automatically [de]registered with subsys itself */
	struct cftype *base_cftypes;
	struct cftype_set base_cftset;

	/* should be defined only by modular subsystems */
	struct module *module;
};

for_each_builtin_subsys()

#define for_each_builtin_subsys(ss, i)					\
	for ((i) = 0; (i) < CGROUP_BUILTIN_SUBSYS_COUNT &&		\
	     (((ss) = cgroup_subsys[i]) || true); (i)++)

int __init cgroup_init(void)
{
	struct cgroup_subsys *ss;
	unsigned long key;
	int i, err;

	err = bdi_init(&cgroup_backing_dev_info);
	if (err)
		return err;

	for_each_builtin_subsys(ss, i) {

        // i: 0, cgroup_subsys[0]: &debug_subsys
		if (!ss->early_init)
			cgroup_init_subsys(ss);
	}

cgroup_init_subsys()

call: start_kernel()

cgroup_init()

call: cgroup_init()

bdi_init()
for_each_buildtin_subsys()
- cgroup_init_subsys(ss): ss=cgroup_subsys

call: cgroup_init_subsys()

static void __init cgroup_init_subsys(struct cgroup_subsys *ss)
{
	struct cgroup_subsys_state *css;

	// ss->name: (&cpu_cgroup_subsys)->name: "cpu"
	// ss->name: (&cpuacct_subsys)->name: "cpuacct"
	printk(KERN_INFO "Initializing cgroup subsys %s\n", ss->name);
	// "Initializing cgroup subsys cpu\n"
	// "Initializing cgroup subsys cpuacct\n"

	mutex_lock(&cgroup_mutex);

	// mutex_lock에서 한일:
	// &cgroup_mutex 을 사용하여 mutex lock을 수행

	// mutex_lock에서 한일:
	// &cgroup_mutex 을 사용하여 mutex lock을 수행

	/* init base cftset */
	// ss: &cpu_cgroup_subsys
	// ss: &cpuacct_subsys
	cgroup_init_cftsets(ss);

	// cgroup_init_cftsets(&cpu_cgroup_subsys)에서 한일:
	// (&(&cpu_cgroup_subsys)->cftsets)->next: &(&cpu_cgroup_subsys)->cftsets
	// (&(&cpu_cgroup_subsys)->cftsets)->prev: &(&cpu_cgroup_subsys)->cftsets
	//
	// (&cpu_files[0])->ss: &cpu_cgroup_subsys
	// (&cpu_files[1])->ss: &cpu_cgroup_subsys
	// (&cpu_files[2])->ss: &cpu_cgroup_subsys
	// (&cpu_cgroup_subsys)->base_cftset.cfts: cpu_files
	//
	// HEAD list인 &(&cpu_cgroup_subsys)->cftsets에 &(&cpu_cgroup_subsys)->base_cftset.node을 tail에 추가

	// cgroup_init_cftsets(&cpuacct_subsys)에서 한일:
	// (&(&cpuacct_subsys)->cftsets)->next: &(&cpuacct_subsys)->cftsets
	// (&(&cpuacct_subsys)->cftsets)->prev: &(&cpuacct_subsys)->cftsets
	//
	// (&files[0])->ss: &cpuacct_subsys
	// (&files[1])->ss: &cpuacct_subsys
	// (&files[2])->ss: &cpuacct_subsys
	// (&cpuacct_subsys)->base_cftset.cfts: files
	//
	// HEAD list인 &(&cpuacct_subsys)->cftsets에 &(&cpuacct_subsys)->base_cftset.node을 tail에 추가

	/* Create the top cgroup state for this subsystem */
	// &ss->sibling: &(&cpu_cgroup_subsys)->sibling
	// &ss->sibling: &(&cpuacct_subsys)->sibling
	list_add(&ss->sibling, &cgroup_dummy_root.subsys_list);

	// list_add에서 한일:
	// HEAD list인 &cgroup_dummy_root.subsys_list에 &(&cpu_cgroup_subsys)->sibling을 추가

	// list_add에서 한일:
	// HEAD list인 &cgroup_dummy_root.subsys_list에 &(&cpuacct_subsys)->sibling을 추가

	// ss->root: (&cpu_cgroup_subsys)->root
	// ss->root: (&cpuacct_subsys)->root
	ss->root = &cgroup_dummy_root;
	// ss->root: (&cpu_cgroup_subsys)->root: &cgroup_dummy_root
	// ss->root: (&cpuacct_subsys)->root: &cgroup_dummy_root

	// ss->css_alloc: (&cpu_cgroup_subsys)->css_alloc: cpu_cgroup_css_alloc
	// cgroup_dummy_top: &cgroup_dummy_root.top_cgroup, ss: &cpu_cgroup_subsys
	// cgroup_css(&cgroup_dummy_root.top_cgroup, &cpu_cgroup_subsys): (&cgroup_dummy_root.top_cgroup)->subsys[1]
	// cpu_cgroup_css_alloc((&cgroup_dummy_root.top_cgroup)->subsys[1]): &root_task_group.css
	// ss->css_alloc: (&cpuacct_subsys)->css_alloc: cpuacct_css_alloc
	// cgroup_dummy_top: &cgroup_dummy_root.top_cgroup, ss: &cpuacct_subsys
	// cgroup_css(&cgroup_dummy_root.top_cgroup, &cpuacct_subsys): (&cgroup_dummy_root.top_cgroup)->subsys[2]
	// cpuacct_css_alloc((&cgroup_dummy_root.top_cgroup)->subsys[2]): &root_cpuacct.css
	css = ss->css_alloc(cgroup_css(cgroup_dummy_top, ss));
	// css: &root_task_group.css
	// css: &root_cpuacct.css

	/* We don't handle early failures gracefully */
	// css: &root_task_group.css, IS_ERR(&root_task_group.css): 0
	// css: &root_cpuacct.css, IS_ERR(&root_cpuacct.css): 0
	BUG_ON(IS_ERR(css));

	// css: &root_task_group.css, ss: &cpu_cgroup_subsys, cgroup_dummy_top: &cgroup_dummy_root.top_cgroup
	// css: &root_cpuacct.css, ss: &cpuacct_subsys, cgroup_dummy_top: &cgroup_dummy_root.top_cgroup
	init_css(css, ss, cgroup_dummy_top);

	// init_css(&root_task_group.css)에서 한일:
	// (&root_task_group.css)->cgroup: &cgroup_dummy_root.top_cgroup
	// (&root_task_group.css)->ss: &cpu_cgroup_subsys
	// (&root_task_group.css)->flags: 1

	// init_css(&root_cpuacct.css)에서 한일:
	// (&root_cpuacct.css)->cgroup: &cgroup_dummy_root.top_cgroup
	// (&root_cpuacct.css)->ss: &cpuacct_subsys
	// (&root_cpuacct.css)->flags: 1

	/* Update the init_css_set to contain a subsys
	 * pointer to this state - since the subsystem is
	 * newly registered, all tasks and hence the
	 * init_css_set is in the subsystem's top cgroup. */
	// ss->subsys_id: (&cpu_cgroup_subsys)->subsys_id: 1, css: &root_task_group.css
	// ss->subsys_id: (&cpuacct_subsys)->subsys_id: 2, css: &root_cpuacct.css
	init_css_set.subsys[ss->subsys_id] = css;
	// init_css_set.subsys[1]: &root_task_group.css
	// init_css_set.subsys[2]: &root_cpuacct.css

	// ss->fork: (&cpu_cgroup_subsys)->fork: NULL, ss->exit: (&cpu_cgroup_subsys)->exit: cpu_cgroup_exit
	// ss->fork: (&cpuacct_subsys)->fork: NULL, ss->exit: (&cpuacct_subsys)->exit: NULL
	need_forkexit_callback |= ss->fork || ss->exit;
	// need_forkexit_callback: 1
	// need_forkexit_callback: 1

	/* At system boot, before all subsystems have been
	 * registered, no tasks have been forked, so we don't
	 * need to invoke fork callbacks here. */
	// list_empty(&init_task.tasks): 1
	// list_empty(&init_task.tasks): 1
	BUG_ON(!list_empty(&init_task.tasks));

	// css: &root_task_group.css, online_css(&root_task_group.css): 0
	// css: &root_cpuacct.css, online_css(&root_cpuacct.css): 0
	BUG_ON(online_css(css));

	// online_css(&root_task_group.css)에서 한일:
	// (&root_task_group.css)->flags: 0x3
	// (&cgroup_dummy_root.top_cgroup)->nr_css: 1
	// (&cgroup_dummy_root.top_cgroup)->subsys[1]: &root_task_group.css

	// online_css(&root_cpuacct.css)에서 한일:
	// (&root_cpuacct.css)->flags: 0x3
	// (&cgroup_dummy_root.top_cgroup)->nr_css: 2
	// (&cgroup_dummy_root.top_cgroup)->subsys[2]: &root_cpuacct.css

	mutex_unlock(&cgroup_mutex);

	// mutex_unlock에서 한일:
	// &cgroup_mutex 을 사용하여 mutex unlock을 수행

	// mutex_unlock에서 한일:
	// &cgroup_mutex 을 사용하여 mutex unlock을 수행

	/* this function shouldn't be used with modular subsystems, since they
	 * need to register a subsys_id, among other things */
	// ss->module: (&cpu_cgroup_subsys)->module: NULL
	// ss->module: (&cpuacct_subsys)->module: NULL
	BUG_ON(ss->module);
}

log

e06275f..8d8d294  master     -> origin/master
Merge made by the 'recursive' strategy.
fs/proc/proc_sysctl.c    | 601 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++-
fs/proc/root.c           | 109 +++++++++++++++++++++++++++
include/linux/kmemleak.h |   1 +
include/linux/spinlock.h |   2 +
include/linux/sysctl.h   |   1 +
init/main.c              |   2 +
kernel/sysctl.c          |  95 ++++++++++++++++++++++-
mm/slub.c                |   2 +
8 files changed, 809 insertions(+), 4 deletions(-)

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a10c_151.md

a10c_151.md

Neuromancer : 151 주차

일시 : 2016.07.16 (151주차 스터디 진행)

모임명 : neuromancer.kr

장소 : 토즈 서현점

장소지원 : 공개 소프트웨어 개발자 커뮤니티 지원 프로그램

참여인원 : 3명

151주차 진도

151 주차 함수 호출 구조

start_kernel()

proc_root_init()

proc_sys_init()

sysctl_init()

register_sysctl_table()

register_sysctl_paths()

__register_sysctl_paths()

count_subheaders()

insert_header()

__register_sysctl_table()

insert_header()

drop_sysctl_table()

register_leaf_sysctl_table()

__register_sysctl_paths()

register_sysctl_paths()

register_sysctl_table()

bid_init()

cgroup_init()

cgroup_init_subsys()

log

Files

a10c_151.md

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History

a10c_151.md

File metadata and controls

Neuromancer : 151 주차

일시 : 2016.07.16 (151주차 스터디 진행)

모임명 : neuromancer.kr

장소 : 토즈 서현점

장소지원 : 공개 소프트웨어 개발자 커뮤니티 지원 프로그램

참여인원 : 3명

151주차 진도

151 주차 함수 호출 구조

start_kernel()

proc_root_init()

proc_sys_init()

sysctl_init()

register_sysctl_table()

register_sysctl_paths()

__register_sysctl_paths()

count_subheaders()

insert_header()

__register_sysctl_table()

insert_header()

drop_sysctl_table()

register_leaf_sysctl_table()

__register_sysctl_paths()

register_sysctl_paths()

register_sysctl_table()

bid_init()

cgroup_init()

cgroup_init_subsys()

log