diff options
| author | Pekka Enberg <penberg@cs.helsinki.fi> | 2009-06-12 14:58:59 +0200 |
|---|---|---|
| committer | Pekka Enberg <penberg@cs.helsinki.fi> | 2009-06-12 17:53:58 +0200 |
| commit | 8429db5c6336083594036c30f49401405d536911 (patch) | |
| tree | 00ab1aa8e222f384bac0e66b7da195279b1c7698 /mm/slab.c | |
| parent | slab,slub: don't enable interrupts during early boot (diff) | |
| download | linux-8429db5c6336083594036c30f49401405d536911.tar.xz linux-8429db5c6336083594036c30f49401405d536911.zip | |
slab: setup cpu caches later on when interrupts are enabled
Fixes the following boot-time warning:
[ 0.000000] ------------[ cut here ]------------
[ 0.000000] WARNING: at kernel/smp.c:369 smp_call_function_many+0x56/0x1bc()
[ 0.000000] Hardware name:
[ 0.000000] Modules linked in:
[ 0.000000] Pid: 0, comm: swapper Not tainted 2.6.30 #492
[ 0.000000] Call Trace:
[ 0.000000] [<ffffffff8149e021>] ? _spin_unlock+0x4f/0x5c
[ 0.000000] [<ffffffff8108f11b>] ? smp_call_function_many+0x56/0x1bc
[ 0.000000] [<ffffffff81061764>] warn_slowpath_common+0x7c/0xa9
[ 0.000000] [<ffffffff810617a5>] warn_slowpath_null+0x14/0x16
[ 0.000000] [<ffffffff8108f11b>] smp_call_function_many+0x56/0x1bc
[ 0.000000] [<ffffffff810f3e00>] ? do_ccupdate_local+0x0/0x54
[ 0.000000] [<ffffffff810f3e00>] ? do_ccupdate_local+0x0/0x54
[ 0.000000] [<ffffffff8108f2be>] smp_call_function+0x3d/0x68
[ 0.000000] [<ffffffff810f3e00>] ? do_ccupdate_local+0x0/0x54
[ 0.000000] [<ffffffff81066fd8>] on_each_cpu+0x31/0x7c
[ 0.000000] [<ffffffff810f64f5>] do_tune_cpucache+0x119/0x454
[ 0.000000] [<ffffffff81087080>] ? lockdep_init_map+0x94/0x10b
[ 0.000000] [<ffffffff818133b0>] ? kmem_cache_init+0x421/0x593
[ 0.000000] [<ffffffff810f69cf>] enable_cpucache+0x68/0xad
[ 0.000000] [<ffffffff818133c3>] kmem_cache_init+0x434/0x593
[ 0.000000] [<ffffffff8180987c>] ? mem_init+0x156/0x161
[ 0.000000] [<ffffffff817f8aae>] start_kernel+0x1cc/0x3b9
[ 0.000000] [<ffffffff817f829a>] x86_64_start_reservations+0xaa/0xae
[ 0.000000] [<ffffffff817f837f>] x86_64_start_kernel+0xe1/0xe8
[ 0.000000] ---[ end trace 4eaa2a86a8e2da22 ]---
Cc: Christoph Lameter <cl@linux-foundation.org>
Cc: Nick Piggin <npiggin@suse.de>
Signed-off-by: Pekka Enberg <penberg@cs.helsinki.fi>
Diffstat (limited to 'mm/slab.c')
| -rw-r--r-- | mm/slab.c | 37 |
1 files changed, 19 insertions, 18 deletions
diff --git a/mm/slab.c b/mm/slab.c index 453efcb1c980..18e3164de09a 100644 --- a/mm/slab.c +++ b/mm/slab.c @@ -759,6 +759,7 @@ static enum { NONE, PARTIAL_AC, PARTIAL_L3, + EARLY, FULL } g_cpucache_up; @@ -767,7 +768,7 @@ static enum { */ int slab_is_available(void) { - return g_cpucache_up == FULL; + return g_cpucache_up >= EARLY; } static DEFINE_PER_CPU(struct delayed_work, reap_work); @@ -1631,19 +1632,27 @@ void __init kmem_cache_init(void) } } - /* 6) resize the head arrays to their final sizes */ - { - struct kmem_cache *cachep; - mutex_lock(&cache_chain_mutex); - list_for_each_entry(cachep, &cache_chain, next) - if (enable_cpucache(cachep, GFP_NOWAIT)) - BUG(); - mutex_unlock(&cache_chain_mutex); - } + g_cpucache_up = EARLY; /* Annotate slab for lockdep -- annotate the malloc caches */ init_lock_keys(); +} + +void __init kmem_cache_init_late(void) +{ + struct kmem_cache *cachep; + + /* + * Interrupts are enabled now so all GFP allocations are safe. + */ + slab_gfp_mask = __GFP_BITS_MASK; + /* 6) resize the head arrays to their final sizes */ + mutex_lock(&cache_chain_mutex); + list_for_each_entry(cachep, &cache_chain, next) + if (enable_cpucache(cachep, GFP_NOWAIT)) + BUG(); + mutex_unlock(&cache_chain_mutex); /* Done! */ g_cpucache_up = FULL; @@ -1660,14 +1669,6 @@ void __init kmem_cache_init(void) */ } -void __init kmem_cache_init_late(void) -{ - /* - * Interrupts are enabled now so all GFP allocations are safe. - */ - slab_gfp_mask = __GFP_BITS_MASK; -} - static int __init cpucache_init(void) { int cpu; |