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authorEric Dumazet <eric.dumazet@gmail.com>2011-07-25 08:55:42 +0200
committerPekka Enberg <penberg@kernel.org>2011-07-28 13:40:08 +0300
commitacfe7d74484d6ccb25a80b8ff259fceceac0473e (patch)
tree0de2cb086983813091e426015e218643016b3bc9 /mm
parent95b6886526bb510b8370b625a49bc0ab3b8ff10f (diff)
downloadop-kernel-dev-acfe7d74484d6ccb25a80b8ff259fceceac0473e.zip
op-kernel-dev-acfe7d74484d6ccb25a80b8ff259fceceac0473e.tar.gz
slab: remove one NR_CPUS dependency
Reduce high order allocations in do_tune_cpucache() for some setups. (NR_CPUS=4096 -> we need 64KB) Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com> Acked-by: Christoph Lameter <cl@linux.com> Signed-off-by: Pekka Enberg <penberg@kernel.org>
Diffstat (limited to 'mm')
-rw-r--r--mm/slab.c5
1 files changed, 3 insertions, 2 deletions
diff --git a/mm/slab.c b/mm/slab.c
index 1e523ed..b80282a 100644
--- a/mm/slab.c
+++ b/mm/slab.c
@@ -3934,7 +3934,7 @@ fail:
struct ccupdate_struct {
struct kmem_cache *cachep;
- struct array_cache *new[NR_CPUS];
+ struct array_cache *new[0];
};
static void do_ccupdate_local(void *info)
@@ -3956,7 +3956,8 @@ static int do_tune_cpucache(struct kmem_cache *cachep, int limit,
struct ccupdate_struct *new;
int i;
- new = kzalloc(sizeof(*new), gfp);
+ new = kzalloc(sizeof(*new) + nr_cpu_ids * sizeof(struct array_cache *),
+ gfp);
if (!new)
return -ENOMEM;
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