[S390] Enable tick based perf_counter on s390.

Signed-off-by: N Martin Schwidefsky <schwidefsky@de.ibm.com>

[S390] Enable tick based perf_counter on s390.
Signed-off-by: N Martin Schwidefsky <schwidefsky@de.ibm.com>
12310e9c · Martin Schwidefsky · 181d9522 · 12310e9c · 12310e9c · 12310e9c
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arch/s390/Kconfig arch/s390/Kconfig +1 -0

arch/s390/include/asm/perf_counter.h arch/s390/include/asm/perf_counter.h +8 -0

tools/perf/perf.h tools/perf/perf.h +6 -0

未找到文件。
--- a/arch/s390/Kconfig
+++ b/arch/s390/Kconfig
@@ -94,6 +94,7 @@ config S390
 	select HAVE_KVM if 64BIT
 	select HAVE_ARCH_TRACEHOOK
 	select INIT_ALL_POSSIBLE
+	select HAVE_PERF_COUNTERS

 source "init/Kconfig"


--- a/arch/s390/include/asm/perf_counter.h
+++ b/arch/s390/include/asm/perf_counter.h
+/*
+ * Performance counter support - s390 specific definitions.
+ *
+ * Copyright 2009 Martin Schwidefsky, IBM Corporation.
+ */
+
+static inline void set_perf_counter_pending(void) {}
+static inline void clear_perf_counter_pending(void) {}
--- a/tools/perf/perf.h
+++ b/tools/perf/perf.h
@@ -13,6 +13,12 @@
 #define cpu_relax()	asm volatile ("" ::: "memory");
 #endif

+#ifdef __s390__
+#include "../../arch/s390/include/asm/unistd.h"
+#define rmb()		asm volatile("bcr 15,0" ::: "memory")
+#define cpu_relax()	asm volatile("" ::: "memory");
+#endif
+
 #include <time.h>
 #include <unistd.h>
 #include <sys/types.h>