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Chen, Kenneth W 383f2835eb [PATCH] Prefetch kernel stacks to speed up context switch 
For architecture like ia64, the switch stack structure is fairly large
(currently 528 bytes).  For context switch intensive application, we found
that significant amount of cache misses occurs in switch_to() function.
The following patch adds a hook in the schedule() function to prefetch
switch stack structure as soon as 'next' task is determined.  This allows
maximum overlap in prefetch cache lines for that structure.

Signed-off-by: Ken Chen <kenneth.w.chen@intel.com>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: "Luck, Tony" <tony.luck@intel.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-09-09 13:57:31 -07:00
..
acpi [ACPI] ACPICA 20050902 2005-09-03 00:15:11 -04:00
asm-alpha [PATCH] Make sparc64 use setup-res.c 2005-09-08 14:57:25 -07:00
asm-arm Merge master.kernel.org:/pub/scm/linux/kernel/git/gregkh/pci-2.6 2005-09-08 15:55:23 -07:00
asm-arm26 [PATCH] Clean up struct flock64 definitions 2005-09-07 16:57:38 -07:00
asm-cris [PATCH] Clean up struct flock64 definitions 2005-09-07 16:57:38 -07:00
asm-frv [PATCH] Clean up struct flock64 definitions 2005-09-07 16:57:38 -07:00
asm-generic [PATCH] Make sparc64 use setup-res.c 2005-09-08 14:57:25 -07:00
asm-h8300 [PATCH] Clean up struct flock64 definitions 2005-09-07 16:57:38 -07:00
asm-i386 [PATCH] i386: CONFIG_ACPI_SRAT typo fix 2005-09-09 13:56:44 -07:00
asm-ia64 [PATCH] Prefetch kernel stacks to speed up context switch 2005-09-09 13:57:31 -07:00
asm-m32r [PATCH] Clean up struct flock64 definitions 2005-09-07 16:57:38 -07:00
asm-m68k [PATCH] Clean up struct flock64 definitions 2005-09-07 16:57:38 -07:00
asm-m68knommu [PATCH] m68knommu: include ColdFire 523x processor register definitions 2005-09-08 17:27:37 -07:00
asm-mips [PATCH] mips: add TANBAC TB0287 support 2005-09-09 13:57:30 -07:00
asm-parisc [PATCH] Make sparc64 use setup-res.c 2005-09-08 14:57:25 -07:00
asm-powerpc [PATCH] powerpc: Fix __power64__ typos that should be __powerpc64__ 2005-09-09 22:11:35 +10:00
asm-ppc [PATCH] ppc32: Kill PVR_440* defines 2005-09-09 13:57:29 -07:00
asm-ppc64 Merge master.kernel.org:/pub/scm/linux/kernel/git/paulus/ppc64-2.6 2005-09-09 10:38:02 -07:00
asm-s390 [PATCH] Clean up struct flock64 definitions 2005-09-07 16:57:38 -07:00
asm-sh [PATCH] Clean up struct flock64 definitions 2005-09-07 16:57:38 -07:00
asm-sh64 [PATCH] Clean up struct flock64 definitions 2005-09-07 16:57:38 -07:00
asm-sparc [PATCH] Clean up struct flock64 definitions 2005-09-07 16:57:38 -07:00
asm-sparc64 Merge master.kernel.org:/pub/scm/linux/kernel/git/gregkh/pci-2.6 2005-09-08 15:55:23 -07:00
asm-um [PATCH] remove asm-*/hdreg.h 2005-09-07 16:57:30 -07:00
asm-v850 [PATCH] Clean up struct flock64 definitions 2005-09-07 16:57:38 -07:00
asm-x86_64 Merge linux-2.6 with linux-acpi-2.6 2005-09-08 01:45:47 -04:00
asm-xtensa [PATCH] Clean up struct flock64 definitions 2005-09-07 16:57:38 -07:00
linux [PATCH] Prefetch kernel stacks to speed up context switch 2005-09-09 13:57:31 -07:00
math-emu
media [PATCH] I2C: Kill i2c_algorithm.id (6/7) 2005-09-05 09:14:32 -07:00
mtd
net [AX.25]: Make asc2ax() thread-proof 2005-09-08 13:40:41 -07:00
pcmcia
rdma [PATCH] IB: move include files to include/rdma 2005-08-26 20:37:38 -07:00
rxrpc
scsi Merge by hand (conflicts in sd.c) 2005-09-06 17:52:54 -05:00
sound Merge branch 'upstream' of master.kernel.org:/pub/scm/linux/kernel/git/jgarzik/misc-2.6 2005-09-07 17:28:25 -07:00
video [PATCH] w100fb: Rewrite for platform independence 2005-09-07 16:57:53 -07:00