summaryrefslogtreecommitdiffstats
path: root/include/linux/slub_def.h
diff options
context:
space:
mode:
authorChristoph Lameter <cl@linux-foundation.org>2009-12-18 16:26:22 -0600
committerPekka Enberg <penberg@cs.helsinki.fi>2009-12-20 10:17:59 +0200
commitff12059ed14b0773d7bbef86f98218ada6c20770 (patch)
tree33b63b4f746e984e8421ea3624312bc98ccb2f37 /include/linux/slub_def.h
parent756dee75872a2a764b478e18076360b8a4ec9045 (diff)
downloadop-kernel-dev-ff12059ed14b0773d7bbef86f98218ada6c20770.zip
op-kernel-dev-ff12059ed14b0773d7bbef86f98218ada6c20770.tar.gz
SLUB: this_cpu: Remove slub kmem_cache fields
Remove the fields in struct kmem_cache_cpu that were used to cache data from struct kmem_cache when they were in different cachelines. The cacheline that holds the per cpu array pointer now also holds these values. We can cut down the struct kmem_cache_cpu size to almost half. The get_freepointer() and set_freepointer() functions that used to be only intended for the slow path now are also useful for the hot path since access to the size field does not require accessing an additional cacheline anymore. This results in consistent use of functions for setting the freepointer of objects throughout SLUB. Also we initialize all possible kmem_cache_cpu structures when a slab is created. No need to initialize them when a processor or node comes online. Signed-off-by: Christoph Lameter <cl@linux-foundation.org> Signed-off-by: Pekka Enberg <penberg@cs.helsinki.fi>
Diffstat (limited to 'include/linux/slub_def.h')
-rw-r--r--include/linux/slub_def.h2
1 files changed, 0 insertions, 2 deletions
diff --git a/include/linux/slub_def.h b/include/linux/slub_def.h
index a78fb4a..0249d41 100644
--- a/include/linux/slub_def.h
+++ b/include/linux/slub_def.h
@@ -38,8 +38,6 @@ struct kmem_cache_cpu {
void **freelist; /* Pointer to first free per cpu object */
struct page *page; /* The slab from which we are allocating */
int node; /* The node of the page (or -1 for debug) */
- unsigned int offset; /* Freepointer offset (in word units) */
- unsigned int objsize; /* Size of an object (from kmem_cache) */
#ifdef CONFIG_SLUB_STATS
unsigned stat[NR_SLUB_STAT_ITEMS];
#endif
OpenPOWER on IntegriCloud