commit 030896885ade0a17c8638e1ede8d3ca7099f0302
author Will Deacon <will.deacon@arm.com> Mon Mar 05 11:49:32 2012 +0000
committer Catalin Marinas <catalin.marinas@arm.com> Mon Sep 17 13:42:17 2012 +0100
tree 600a2db0d0e9c785f618d859dbeeae9e57abe4fd
parent 5c4233697c3f5cb14eb7a969332e2d60f357f952

arm64: Performance counters support

This patch adds support for the AArch64 performance counters.

Signed-off-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Acked-by: Tony Lindgren <tony@atomide.com>
Acked-by: Nicolas Pitre <nico@linaro.org>
Acked-by: Olof Johansson <olof@lixom.net>
Acked-by: Santosh Shilimkar <santosh.shilimkar@ti.com>

tools/perf/perf.h

diff --git a/tools/perf/perf.h b/tools/perf/perf.h
index f960ccb..8c36763 100644
--- a/tools/perf/perf.h
+++ b/tools/perf/perf.h
@@ -88,6 +88,12 @@
 #define CPUINFO_PROC	"Processor"
 #endif
 
+#ifdef __aarch64__
+#include "../../arch/arm64/include/asm/unistd.h"
+#define rmb()		asm volatile("dmb ld" ::: "memory")
+#define cpu_relax()	asm volatile("yield" ::: "memory")
+#endif
+
 #ifdef __mips__
 #include "../../arch/mips/include/asm/unistd.h"
 #define rmb()		asm volatile(					\