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author | Sebastian Andrzej Siewior <bigeasy@linutronix.de> | 2014-04-25 01:44:53 (GMT) |
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committer | Scott Wood <scottwood@freescale.com> | 2015-02-13 22:20:26 (GMT) |
commit | 50b87540b4fa34bb425ba4cac3c274e10db8c54b (patch) | |
tree | e7aac9d6d12f3525a9644c10e53764ebab0d3f9a /mm/slub.c | |
parent | 5515a26616e4e2691d904e54074c0b3ab41268ed (diff) | |
download | linux-fsl-qoriq-50b87540b4fa34bb425ba4cac3c274e10db8c54b.tar.xz |
slub: delay ctor until the object is requested
It seems that allocation of plenty objects causes latency on ARM since that
code can not be preempted
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Diffstat (limited to 'mm/slub.c')
-rw-r--r-- | mm/slub.c | 6 |
1 files changed, 6 insertions, 0 deletions
@@ -1363,8 +1363,10 @@ static void setup_object(struct kmem_cache *s, struct page *page, void *object) { setup_object_debug(s, page, object); +#ifndef CONFIG_PREEMPT_RT_FULL if (unlikely(s->ctor)) s->ctor(object); +#endif } static struct page *new_slab(struct kmem_cache *s, gfp_t flags, int node) @@ -2468,6 +2470,10 @@ redo: if (unlikely(gfpflags & __GFP_ZERO) && object) memset(object, 0, s->object_size); +#ifdef CONFIG_PREEMPT_RT_FULL + if (unlikely(s->ctor) && object) + s->ctor(object); +#endif slab_post_alloc_hook(s, gfpflags, object); |