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[PATCH] sched: add cacheflush() asm

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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>
This commit is contained in:
Ingo Molnar
2006-01-12 01:05:27 -08:00
committed by Linus Torvalds
parent c6b44d10f2
commit 4dc7a0bbeb
16 changed files with 148 additions and 0 deletions
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10
include/asm-alpha/system.h
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@@ -140,6 +140,16 @@ extern void halt(void) __attribute__((noreturn));
struct task_struct;
extern struct task_struct *alpha_switch_to(unsigned long, struct task_struct*);
/*
* 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.
*
* TODO: fill this in!
*/
static inline void sched_cacheflush(void)
{
}
#define imb() \
__asm__ __volatile__ ("call_pal %0 #imb" : : "i" (PAL_imb) : "memory")