zsmalloc: add bp hints to memory allocations

These are called frequently. Add bp hints to avoid pipeline flushes. Signed-off-by: Park Ju Hyung <[email protected]> Signed-off-by: Alexander Winkowski <[email protected]>
Positron-B · Feb 10, 2022 · 4438239 · 4438239
1 parent 88d356e
commit 4438239
Showing 1 changed file with 3 additions and 3 deletions.
diff --git a/mm/zsmalloc.c b/mm/zsmalloc.c
@@ -1061,7 +1061,7 @@ static struct zspage *alloc_zspage(struct zs_pool *pool,
 	struct page *pages[ZS_MAX_PAGES_PER_ZSPAGE];
 	struct zspage *zspage = cache_alloc_zspage(pool, gfp);
 
-	if (!zspage)
+	if (unlikely(!zspage))
 		return NULL;
 
 	zspage->magic = ZSPAGE_MAGIC;
@@ -1417,7 +1417,7 @@ unsigned long zs_malloc(struct zs_pool *pool, size_t size, gfp_t gfp)
 		return 0;
 
 	handle = cache_alloc_handle(pool, gfp);
-	if (!handle)
+	if (unlikely(!handle))
 		return 0;
 
 	/* extra space in chunk to keep the handle */
@@ -1439,7 +1439,7 @@ unsigned long zs_malloc(struct zs_pool *pool, size_t size, gfp_t gfp)
 	spin_unlock(&class->lock);
 
 	zspage = alloc_zspage(pool, class, gfp);
-	if (!zspage) {
+	if (unlikely(!zspage)) {
 		cache_free_handle(pool, handle);
 		return 0;
 	}