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42a9fdbb12
linux/include
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Christoph Lameter 42a9fdbb12 SLUB: Optimize cacheline use for zeroing 
We touch a cacheline in the kmem_cache structure for zeroing to get the
size. However, the hot paths in slab_alloc and slab_free do not reference
any other fields in kmem_cache, so we may have to just bring in the
cacheline for this one access.

Add a new field to kmem_cache_cpu that contains the object size. That
cacheline must already be used in the hotpaths. So we save one cacheline
on every slab_alloc if we zero.

We need to update the kmem_cache_cpu object size if an aliasing operation
changes the objsize of an non debug slab.

Signed-off-by: Christoph Lameter <clameter@sgi.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-10-16 09:43:01 -07:00
..
acpi ACPI: CONFIG_ACPI_SLEEP=n power off regression in 2.6.23-rc8 (NOT in rc7) 2007-09-25 17:58:52 -04:00
asm-alpha Fix Alpha O_CLOEXEC definition 2007-08-09 08:39:22 -07:00
asm-arm Merge branch 'devel' of master.kernel.org:/home/rmk/linux-2.6-arm 2007-10-15 16:08:50 -07:00
asm-avr32 x86: optimize page faults like all other achitectures and kill notifier cruft 2007-10-16 09:42:50 -07:00
asm-blackfin Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input 2007-10-15 13:41:39 -07:00
asm-cris
asm-frv frv: missing casts in cmpxchg() 2007-10-14 12:41:51 -07:00
asm-generic flush icache before set_pte() on ia64: flush icache at set_pte 2007-10-16 09:42:59 -07:00
asm-h8300 Binfmt_flat: Add minimum support for the Blackfin relocations 2007-10-03 23:41:43 +08:00
asm-ia64 flush icache before set_pte() on ia64: flush icache at set_pte 2007-10-16 09:42:59 -07:00
asm-m32r Binfmt_flat: Add minimum support for the Blackfin relocations 2007-10-03 23:41:43 +08:00
asm-m68k m68k: Export cachectl.h 2007-10-13 09:41:03 -07:00
asm-m68knommu Binfmt_flat: Add minimum support for the Blackfin relocations 2007-10-03 23:41:43 +08:00
asm-mips move a few definitions to au1000_xxs1500.c 2007-10-16 09:42:50 -07:00
asm-parisc [PARISC] Add dummy isa_(bus|virt)_to_(virt|bus) inlines 2007-08-27 00:29:22 -04:00
asm-powerpc ppc64: SPARSEMEM_VMEMMAP support 2007-10-16 09:42:51 -07:00
asm-ppc [POWERPC] Prevent direct inclusion of <asm/rwsem.h>. 2007-09-22 14:49:21 +10:00
asm-s390 x86: optimize page faults like all other achitectures and kill notifier cruft 2007-10-16 09:42:50 -07:00
asm-sh x86: optimize page faults like all other achitectures and kill notifier cruft 2007-10-16 09:42:50 -07:00
asm-sh64 Merge git://git.kernel.org/pub/scm/linux/kernel/git/lethal/sh64-2.6 2007-10-13 09:50:26 -07:00
asm-sparc [SPARC32]: Add irqflags.h to sparc32 and use it from generic code. 2007-10-13 21:53:11 -07:00
asm-sparc64 SPARC64: SPARSEMEM_VMEMMAP support 2007-10-16 09:42:51 -07:00
asm-um UML: Fix ELF_CORE_COPY_REGS build botch 2007-09-10 18:58:05 -07:00
asm-v850 Binfmt_flat: Add minimum support for the Blackfin relocations 2007-10-03 23:41:43 +08:00
asm-x86 x86_64: SPARSEMEM_VMEMMAP 2M page size support 2007-10-16 09:42:51 -07:00
asm-xtensa [patch 1/2] Xtensa: enable arbitary tty speed setting ioctls 2007-08-27 13:54:25 -07:00
crypto [CRYPTO] sha: Add header file for SHA definitions 2007-10-10 16:55:50 -07:00
keys
linux SLUB: Optimize cacheline use for zeroing 2007-10-16 09:43:01 -07:00
math-emu Fix <math-emu/soft-fp.h> tpyo 2007-08-18 17:15:17 -07:00
media v4l: copy_to_user() is not a good method name 2007-10-13 09:58:59 -07:00
mtd
net [IPV6]: Replace sk_buff ** with sk_buff * in input handlers 2007-10-15 12:50:28 -07:00
pcmcia pcmcia: use DMA_MASK_NONE for the default for all pcmcia devices 2007-10-16 09:42:50 -07:00
rdma IB/cm: Modify interface to send MRAs in response to duplicate messages 2007-10-09 19:59:17 -07:00
rxrpc
scsi Merge master.kernel.org:/pub/scm/linux/kernel/git/jejb/scsi-misc-2.6 2007-10-15 08:19:33 -07:00
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