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| author | Ingo Molnar <mingo@elte.hu> | 2006-01-12 01:05:27 -0800 |
|---|---|---|
| committer | Linus Torvalds <torvalds@g5.osdl.org> | 2006-01-12 09:08:49 -0800 |
| commit | 4dc7a0bbeb6882ad665e588e82fabe5bb4645f2f (patch) | |
| tree | 8c034f802157d7f449e76f45086c0e13e0ea4711 /arch/ia64 | |
| parent | c6b44d10f25e5a93eca5135b686a35775c63546e (diff) | |
| download | blackbird-op-linux-4dc7a0bbeb6882ad665e588e82fabe5bb4645f2f.tar.gz blackbird-op-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 'arch/ia64')
| -rw-r--r-- | arch/ia64/kernel/setup.c | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/arch/ia64/kernel/setup.c b/arch/ia64/kernel/setup.c index c33305d8e5eb..d91c8ff2c0d7 100644 --- a/arch/ia64/kernel/setup.c +++ b/arch/ia64/kernel/setup.c @@ -60,6 +60,7 @@ #include <asm/smp.h> #include <asm/system.h> #include <asm/unistd.h> +#include <asm/system.h> #if defined(CONFIG_SMP) && (IA64_CPU_SIZE > PAGE_SIZE) # error "struct cpuinfo_ia64 too big!" @@ -870,6 +871,15 @@ cpu_init (void) pm_idle = default_idle; } +/* + * 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. + */ +void sched_cacheflush(void) +{ + ia64_sal_cache_flush(3); +} + void check_bugs (void) { |
