From mboxrd@z Thu Jan 1 00:00:00 1970 From: Steven Rostedt Subject: [PATCH 09/10] slab, lockdep: Annotate all slab caches Date: Fri, 02 Dec 2011 20:46:50 -0500 Message-ID: <20111203014757.464052810@goodmis.org> References: <20111203014641.165123482@goodmis.org> Content-Type: multipart/signed; micalg="pgp-sha1"; protocol="application/pgp-signature"; boundary="00GvhwF7k39YY" Cc: Thomas Gleixner , Carsten Emde , John Kacur , Peter Zijlstra , Hans Schillstrom , Christoph Lameter , Pekka Enberg , Matt Mackall , Sitsofe Wheeler , linux-mm@kvack.org, David Rientjes To: linux-kernel@vger.kernel.org, linux-rt-users Return-path: Content-Disposition: inline; filename=0009-slab-lockdep-Annotate-all-slab-caches.patch Sender: owner-linux-mm@kvack.org List-Id: linux-rt-users.vger.kernel.org --00GvhwF7k39YY Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable From: Peter Zijlstra Currently we only annotate the kmalloc caches, annotate all of them. Signed-off-by: Peter Zijlstra Cc: Hans Schillstrom Cc: Christoph Lameter Cc: Pekka Enberg Cc: Matt Mackall Cc: Sitsofe Wheeler Cc: linux-mm@kvack.org Cc: David Rientjes Signed-off-by: Thomas Gleixner Link: http://lkml.kernel.org/n/tip-10bey2cgpcvtbdkgigaoab8w@git.kernel.org Signed-off-by: Steven Rostedt --- mm/slab.c | 52 ++++++++++++++++++++++++++++------------------------ 1 files changed, 28 insertions(+), 24 deletions(-) diff --git a/mm/slab.c b/mm/slab.c index 433b9a2..5251b99 100644 --- a/mm/slab.c +++ b/mm/slab.c @@ -606,6 +606,12 @@ int slab_is_available(void) return g_cpucache_up >=3D EARLY; } =20 +/* + * Guard access to the cache-chain. + */ +static DEFINE_MUTEX(cache_chain_mutex); +static struct list_head cache_chain; + #ifdef CONFIG_LOCKDEP =20 /* @@ -667,38 +673,41 @@ static void slab_set_debugobj_lock_classes(struct kme= m_cache *cachep) slab_set_debugobj_lock_classes_node(cachep, node); } =20 -static void init_node_lock_keys(int q) +static void init_lock_keys(struct kmem_cache *cachep, int node) { - struct cache_sizes *s =3D malloc_sizes; + struct kmem_list3 *l3; =20 if (g_cpucache_up < LATE) return; =20 - for (s =3D malloc_sizes; s->cs_size !=3D ULONG_MAX; s++) { - struct kmem_list3 *l3; + l3 =3D cachep->nodelists[node]; + if (!l3 || OFF_SLAB(cachep)) + return; =20 - l3 =3D s->cs_cachep->nodelists[q]; - if (!l3 || OFF_SLAB(s->cs_cachep)) - continue; + slab_set_lock_classes(cachep, &on_slab_l3_key, &on_slab_alc_key, node); +} =20 - slab_set_lock_classes(s->cs_cachep, &on_slab_l3_key, - &on_slab_alc_key, q); - } +static void init_node_lock_keys(int node) +{ + struct kmem_cache *cachep; + + list_for_each_entry(cachep, &cache_chain, next) + init_lock_keys(cachep, node); } =20 -static inline void init_lock_keys(void) +static inline void init_cachep_lock_keys(struct kmem_cache *cachep) { int node; =20 for_each_node(node) - init_node_lock_keys(node); + init_lock_keys(cachep, node); } #else -static void init_node_lock_keys(int q) +static void init_node_lock_keys(int node) { } =20 -static inline void init_lock_keys(void) +static void init_cachep_lock_keys(struct kmem_cache *cachep) { } =20 @@ -711,12 +720,6 @@ static void slab_set_debugobj_lock_classes(struct kmem= _cache *cachep) } #endif =20 -/* - * Guard access to the cache-chain. - */ -static DEFINE_MUTEX(cache_chain_mutex); -static struct list_head cache_chain; - static DEFINE_PER_CPU(struct delayed_work, slab_reap_work); static DEFINE_PER_CPU(struct list_head, slab_free_list); static DEFINE_LOCAL_IRQ_LOCK(slab_lock); @@ -1728,14 +1731,13 @@ void __init kmem_cache_init_late(void) =20 g_cpucache_up =3D LATE; =20 - /* Annotate slab for lockdep -- annotate the malloc caches */ - init_lock_keys(); - /* 6) resize the head arrays to their final sizes */ mutex_lock(&cache_chain_mutex); - list_for_each_entry(cachep, &cache_chain, next) + list_for_each_entry(cachep, &cache_chain, next) { + init_cachep_lock_keys(cachep); if (enable_cpucache(cachep, GFP_NOWAIT)) BUG(); + } mutex_unlock(&cache_chain_mutex); =20 /* Done! */ @@ -2546,6 +2548,8 @@ kmem_cache_create (const char *name, size_t size, siz= e_t align, slab_set_debugobj_lock_classes(cachep); } =20 + init_cachep_lock_keys(cachep); + /* cache setup completed, link it into the list */ list_add(&cachep->next, &cache_chain); oops: --=20 1.7.7.1 --00GvhwF7k39YY Content-Type: application/pgp-signature; name="signature.asc" Content-Description: This is a digitally signed message part -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.11 (GNU/Linux) iQIcBAABAgAGBQJO2X/NAAoJEIy3vGnGbaoA06kP/RkgvA9I/sffN/euxeNieiFO RW+mBwg7fxWvNlONAPuQHgc4yX+cCtUHiGMOox76TJXAXj70fFCpNVdwUk44mOv3 ulwyUbwQtwSs15Pah4dFdelRxhd6zcgcpEoqvHMmen72V0LuvEtHgaPblBU74HxS BtwxaI38M08JjYcGUawOEDVxR5iZJAH4orXc+P/JEkFjyT/j0wPLGE6y0PI+EU0Q VwlgPNdxPo/7BHlq8VWOOLC6vr4K59NPYDD6eqEwzgk2Au4kQXS/RzfPphN6uvl2 TPvla6cRJdtDzJXg+MxzTMDdGe3HpAuV34ZkjLTiastQ5MoYvSYhew/cM54LNzHX lv7kNkLs7CK9/MofmtYjkHDIu6DuEajZmCeZEUNWKdVw9ihBNXhbJAD0kTMwlVYD 8ZWHidgERoAeqxzxFXL/oTIjpN081+LmQNcovE7Ioa6Xkoi2o/UNnNkMYRqA4PL4 Y7Rq/PICKGU7p4MoCqZP/6BGt0wIpVNglXz7URg64BFwmhRE09z1k/BGt+7bpHO6 K0JtrBW45wMlJJ46TyeB8Te8BaKW1ulSK3yk4Ad3z4IomT+pGn3/cR61g0eQ/SKI lSysd/wN9ybdRXIwwDy8KbzzRP3JscTjsDUZJ2ayj9/XxFpMqhtbT/nKEXP2/6lg nCgiiszAcWzG3SvRNy5E =EbBE -----END PGP SIGNATURE----- --00GvhwF7k39YY-- -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@kvack.org. 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