[RFC patch 16/18] MIPS create empty sync_core()

Mathieu Desnoyers
2008-11-07T05:46:13Z

[-- Attachment #1: mips-create-empty-sync_core.patch --]
[-- Type: text/plain, Size: 1009 bytes --]

Needed by architecture-independant tsc-sync.c.

Signed-off-by: Mathieu Desnoyers <mathieu.desnoyers@polymtl.ca>
CC: Ralf Baechle <ralf@linux-mips.org>
CC: Peter Zijlstra <a.p.zijlstra@chello.nl>
---
arch/mips/include/asm/barrier.h | 6 ++++++
1 file changed, 6 insertions(+)

Index: linux.trees.git/arch/mips/include/asm/barrier.h
===================================================================
--- linux.trees.git.orig/arch/mips/include/asm/barrier.h 2008-10-30 20:22:49.000000000 -0400
+++ linux.trees.git/arch/mips/include/asm/barrier.h 2008-11-07 00:16:28.000000000 -0500
@@ -152,4 +152,10 @@
#define smp_llsc_rmb() __asm__ __volatile__(__WEAK_LLSC_MB : : :"memory")
#define smp_llsc_wmb() __asm__ __volatile__(__WEAK_LLSC_MB : : :"memory")

+/*
+ * MIPS does not have any instruction to serialize instruction execution on the
+ * core.
+ */
+#define sync_core()
+
#endif /* __ASM_BARRIER_H */

--
Mathieu Desnoyers
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