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authorIngo Molnar <mingo@elte.hu>2006-01-12 01:05:27 -0800
committerLinus Torvalds <torvalds@g5.osdl.org>2006-01-12 09:08:49 -0800
commit4dc7a0bbeb6882ad665e588e82fabe5bb4645f2f (patch)
tree8c034f802157d7f449e76f45086c0e13e0ea4711 /arch
parentc6b44d10f25e5a93eca5135b686a35775c63546e (diff)
[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')
-rw-r--r--arch/ia64/kernel/setup.c10
1 files changed, 10 insertions, 0 deletions
diff --git a/arch/ia64/kernel/setup.c b/arch/ia64/kernel/setup.c
index c33305d8e5e..d91c8ff2c0d 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)
{