Messages in this thread Patch in this message | | | From | js1304@gmail ... | Subject | [PATCH v2 2/5] mm/slub: query dynamic DEBUG_PAGEALLOC setting | Date | Thu, 11 Feb 2016 13:04:58 +0900 |
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From: Joonsoo Kim <iamjoonsoo.kim@lge.com>
We can disable debug_pagealloc processing even if the code is compiled with CONFIG_DEBUG_PAGEALLOC. This patch changes the code to query whether it is enabled or not in runtime.
v2: clean up code, per Christian.
Signed-off-by: Joonsoo Kim <iamjoonsoo.kim@lge.com> --- mm/slub.c | 7 +++---- 1 file changed, 3 insertions(+), 4 deletions(-)
diff --git a/mm/slub.c b/mm/slub.c index 606488b..a1874c2 100644 --- a/mm/slub.c +++ b/mm/slub.c @@ -250,11 +250,10 @@ static inline void *get_freepointer_safe(struct kmem_cache *s, void *object) { void *p; -#ifdef CONFIG_DEBUG_PAGEALLOC + if (!debug_pagealloc_enabled()) + return get_freepointer(s, object); + probe_kernel_read(&p, (void **)(object + s->offset), sizeof(p)); -#else - p = get_freepointer(s, object); -#endif return p; } -- 1.9.1
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