[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>
diff --git a/include/asm-sparc/system.h b/include/asm-sparc/system.h
index 1f6b71f..52fe2e4 100644
--- a/include/asm-sparc/system.h
+++ b/include/asm-sparc/system.h
@@ -166,6 +166,16 @@
} while(0)
/*
+ * 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)
+{
+}
+
+/*
* Changing the IRQ level on the Sparc.
*/
extern void local_irq_restore(unsigned long);