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>
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( \