diff options
| author | Ingo Molnar <mingo@elte.hu> | 2006-01-12 10:05:27 +0100 |
|---|---|---|
| committer | Linus Torvalds <torvalds@g5.osdl.org> | 2006-01-12 18:08:49 +0100 |
| commit | 4dc7a0bbeb6882ad665e588e82fabe5bb4645f2f (patch) | |
| tree | 8c034f802157d7f449e76f45086c0e13e0ea4711 /include/asm-i386 | |
| parent | [PATCH] Implement ioctl emulation for the parport character device (diff) | |
| download | linux-4dc7a0bbeb6882ad665e588e82fabe5bb4645f2f.tar.xz linux-4dc7a0bbeb6882ad665e588e82fabe5bb4645f2f.zip | |
[PATCH] sched: add cacheflush() asm
Add per-arch sched_cacheflush() which is a write-back cacheflush used by
the migration-cost calibration code at bootup time.
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Cc: Nick Piggin <nickpiggin@yahoo.com.au>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'include/asm-i386')
| -rw-r--r-- | include/asm-i386/system.h | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/include/asm-i386/system.h b/include/asm-i386/system.h index 9c0593b7a94e..36a92ed6a9d0 100644 --- a/include/asm-i386/system.h +++ b/include/asm-i386/system.h @@ -548,6 +548,15 @@ void enable_hlt(void); extern int es7000_plat; void cpu_idle_wait(void); +/* + * On SMP systems, when the scheduler does migration-cost autodetection, + * it needs a way to flush as much of the CPU's caches as possible: + */ +static inline void sched_cacheflush(void) +{ + wbinvd(); +} + extern unsigned long arch_align_stack(unsigned long sp); #endif |