These are simple userspace programs written for educational purposes to test different Linux functionalities and features, some of which were written while answering StackOverflow questions.
| Program | Description | SO question? |
|---|---|---|
alias_existing_page.c |
Map an existing page to a different vaddr using /dev/mem and /proc/PID/pagemap |
67781437 |
ftrace_helper.c |
Automate kernel function tracer usage through tracefs with minimal trace output noise | - |
inherit_capability.c |
Test preserving a privileged capability after dropping privileges | - |
pageinfo.c |
Dump information from /proc/[pid]/pagemap and /proc/kpage{flags,count} in human readable form |
- |
test_scaling_governor.c |
Test scaling governor behavior when sleeping before a CPU-intensive task | 60351509 |
x86_rtm_page_fault.c |
Use x86 transactional memory to detect page faults and dirty pages | - |
A simple make should suffice. To build a specific program simply specify it as
a target to make without the .c extension:
make alias_existing_pageNote: inherit_capability.c needs libcap-dev.