[PATCH v2] perf: add support for the xtensa architecture

From: Baruch Siach
Date: Thu Jan 02 2014 - 02:57:34 EST

Signed-off-by: Baruch Siach <baruch@xxxxxxxxxx>
v2: use the "core ID" field from /proc/cpuinfo (Max Filippov)
tools/perf/perf.h | 7 +++++++
1 file changed, 7 insertions(+)

diff --git a/tools/perf/perf.h b/tools/perf/perf.h
index b079304bd53d..e441864dbe03 100644
--- a/tools/perf/perf.h
+++ b/tools/perf/perf.h
@@ -132,6 +132,13 @@

+#ifdef __xtensa__
+#define mb() asm volatile("memw" ::: "memory")
+#define wmb() asm volatile("memw" ::: "memory")
+#define rmb() asm volatile("" ::: "memory")
+#define CPUINFO_PROC "core ID"
#define barrier() asm volatile ("" ::: "memory")

#ifndef cpu_relax

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