From: Christoph Lameter <cl@linux-foundation.org>
To: Pekka Enberg <penberg@cs.helsinki.fi>
Cc: linux-mm@kvack.org, David Rientjes <rientjes@google.com>
Subject: [S+Q Cleanup 1/6] Slub: Force no inlining of debug functions
Date: Tue, 17 Aug 2010 16:11:19 -0500 [thread overview]
Message-ID: <20100817211134.949705983@linux.com> (raw)
In-Reply-To: 20100817211118.958108012@linux.com
[-- Attachment #1: slub_nolinline --]
[-- Type: text/plain, Size: 1360 bytes --]
Compiler folds the debgging functions into the critical paths.
Avoid that by adding noinline to the functions that check for
problems.
Signed-off-by: Christoph Lameter <cl@linux.com>
---
mm/slub.c | 6 +++---
1 file changed, 3 insertions(+), 3 deletions(-)
Index: linux-2.6/mm/slub.c
===================================================================
--- linux-2.6.orig/mm/slub.c 2010-07-29 18:32:26.000000000 -0500
+++ linux-2.6/mm/slub.c 2010-07-29 18:32:33.000000000 -0500
@@ -857,7 +857,7 @@ static void setup_object_debug(struct km
init_tracking(s, object);
}
-static int alloc_debug_processing(struct kmem_cache *s, struct page *page,
+static noinline int alloc_debug_processing(struct kmem_cache *s, struct page *page,
void *object, unsigned long addr)
{
if (!check_slab(s, page))
@@ -897,8 +897,8 @@ bad:
return 0;
}
-static int free_debug_processing(struct kmem_cache *s, struct page *page,
- void *object, unsigned long addr)
+static noinline int free_debug_processing(struct kmem_cache *s,
+ struct page *page, void *object, unsigned long addr)
{
if (!check_slab(s, page))
goto fail;
--
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next prev parent reply other threads:[~2010-08-17 21:11 UTC|newest]
Thread overview: 17+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-08-17 21:11 [S+Q Cleanup 0/6] SLUB: Cleanups Christoph Lameter
2010-08-17 21:11 ` Christoph Lameter [this message]
2010-08-17 23:13 ` [S+Q Cleanup 1/6] Slub: Force no inlining of debug functions David Rientjes
2010-08-17 21:11 ` [S+Q Cleanup 2/6] slub: remove dynamic dma slab allocation Christoph Lameter
2010-08-17 23:35 ` David Rientjes
2010-08-18 14:46 ` Christoph Lameter
2010-08-17 21:11 ` [S+Q Cleanup 3/6] slub: Remove static kmem_cache_cpu array for boot Christoph Lameter
2010-08-17 23:58 ` David Rientjes
2010-08-18 6:09 ` Tejun Heo
2010-08-18 14:54 ` Christoph Lameter
2010-08-17 21:11 ` [S+Q Cleanup 4/6] slub: Dynamically size kmalloc cache allocations Christoph Lameter
2010-08-17 21:11 ` [S+Q Cleanup 5/6] slub: Extract hooks for memory checkers from hotpaths Christoph Lameter
2010-08-18 0:28 ` David Rientjes
2010-08-18 14:58 ` Christoph Lameter
2010-08-17 21:11 ` [S+Q Cleanup 6/6] slub: Move gfpflag masking out of the hotpath Christoph Lameter
2010-08-18 0:35 ` David Rientjes
2010-08-18 15:46 ` Christoph Lameter
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