diff options
Diffstat (limited to 'mm')
| -rw-r--r-- | mm/slab_common.c | 11 |
1 files changed, 3 insertions, 8 deletions
diff --git a/mm/slab_common.c b/mm/slab_common.c index 607249785c07..2071cefbe651 100644 --- a/mm/slab_common.c +++ b/mm/slab_common.c @@ -1141,7 +1141,7 @@ EXPORT_SYMBOL(kmalloc_large_node); #ifdef CONFIG_SLAB_FREELIST_RANDOM /* Randomize a generic freelist */ -static void freelist_randomize(struct rnd_state *state, unsigned int *list, +static void freelist_randomize(unsigned int *list, unsigned int count) { unsigned int rand; @@ -1152,8 +1152,7 @@ static void freelist_randomize(struct rnd_state *state, unsigned int *list, /* Fisher-Yates shuffle */ for (i = count - 1; i > 0; i--) { - rand = prandom_u32_state(state); - rand %= (i + 1); + rand = get_random_u32_below(i + 1); swap(list[i], list[rand]); } } @@ -1162,7 +1161,6 @@ static void freelist_randomize(struct rnd_state *state, unsigned int *list, int cache_random_seq_create(struct kmem_cache *cachep, unsigned int count, gfp_t gfp) { - struct rnd_state state; if (count < 2 || cachep->random_seq) return 0; @@ -1171,10 +1169,7 @@ int cache_random_seq_create(struct kmem_cache *cachep, unsigned int count, if (!cachep->random_seq) return -ENOMEM; - /* Get best entropy at this stage of boot */ - prandom_seed_state(&state, get_random_long()); - - freelist_randomize(&state, cachep->random_seq, count); + freelist_randomize(cachep->random_seq, count); return 0; } |