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| author | Peter Zijlstra <a.p.zijlstra@chello.nl> | 2011-11-28 21:12:40 +0100 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@suse.de> | 2011-12-09 08:55:48 -0800 |
| commit | 3e4f16a375aafec68144d4edaae4ebd8e5017571 (patch) | |
| tree | a8cf39d370262d54d115b2f828ab54f8f34e71b4 | |
| parent | a4b63ef678714a98dd8886fea14d5f76da671b6f (diff) | |
| download | lwn-3e4f16a375aafec68144d4edaae4ebd8e5017571.tar.gz lwn-3e4f16a375aafec68144d4edaae4ebd8e5017571.zip | |
slab, lockdep: Fix silly bug
commit 52cef189165d74a5d6030184a8e05595194c69ca upstream.
Commit 30765b92 ("slab, lockdep: Annotate the locks before using
them") moves the init_lock_keys() call from after g_cpucache_up =
FULL, to before it. And overlooks the fact that init_node_lock_keys()
tests for it and ignores everything !FULL.
Introduce a LATE stage and change the lockdep test to be <LATE.
Acked-by: Christoph Lameter <cl@linux.com>
Cc: Pekka Enberg <penberg@kernel.org>
Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
| -rw-r--r-- | mm/slab.c | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/mm/slab.c b/mm/slab.c index 6d90a091fdca..893c76df9241 100644 --- a/mm/slab.c +++ b/mm/slab.c @@ -595,6 +595,7 @@ static enum { PARTIAL_AC, PARTIAL_L3, EARLY, + LATE, FULL } g_cpucache_up; @@ -671,7 +672,7 @@ static void init_node_lock_keys(int q) { struct cache_sizes *s = malloc_sizes; - if (g_cpucache_up != FULL) + if (g_cpucache_up < LATE) return; for (s = malloc_sizes; s->cs_size != ULONG_MAX; s++) { @@ -1666,6 +1667,8 @@ void __init kmem_cache_init_late(void) { struct kmem_cache *cachep; + g_cpucache_up = LATE; + /* Annotate slab for lockdep -- annotate the malloc caches */ init_lock_keys(); |