From 4c13dd3b48fcb6fbe44f241eb11a057ecd1cba75 Mon Sep 17 00:00:00 2001 From: Dmitry Monakhov Date: Fri, 26 Feb 2010 09:36:12 +0300 Subject: failslab: add ability to filter slab caches This patch allow to inject faults only for specific slabs. In order to preserve default behavior cache filter is off by default (all caches are faulty). One may define specific set of slabs like this: # mark skbuff_head_cache as faulty echo 1 > /sys/kernel/slab/skbuff_head_cache/failslab # Turn on cache filter (off by default) echo 1 > /sys/kernel/debug/failslab/cache-filter # Turn on fault injection echo 1 > /sys/kernel/debug/failslab/times echo 1 > /sys/kernel/debug/failslab/probability Acked-by: David Rientjes Acked-by: Akinobu Mita Acked-by: Christoph Lameter Signed-off-by: Dmitry Monakhov Signed-off-by: Pekka Enberg --- mm/slab.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'mm/slab.c') diff --git a/mm/slab.c b/mm/slab.c index 7451bdacaf18..33496b704859 100644 --- a/mm/slab.c +++ b/mm/slab.c @@ -3101,7 +3101,7 @@ static bool slab_should_failslab(struct kmem_cache *cachep, gfp_t flags) if (cachep == &cache_cache) return false; - return should_failslab(obj_size(cachep), flags); + return should_failslab(obj_size(cachep), flags, cachep->flags); } static inline void *____cache_alloc(struct kmem_cache *cachep, gfp_t flags) -- cgit v1.2.3