[tip:perf/core] perf tools: Use __maybe_unused consistently

[tip-bot for Arnaldo Carvalho de Melo <tipbot@zytor.com>]

Commit-ID:  0353631aa73e5e468fae1cd699bf860b59ba100d
Gitweb:     http://git.kernel.org/tip/0353631aa73e5e468fae1cd699bf860b59ba100d
Author:     Arnaldo Carvalho de Melo <acme@redhat.com>
AuthorDate: Fri, 16 Jun 2017 12:18:27 -0300
Committer:  Arnaldo Carvalho de Melo <acme@redhat.com>
CommitDate: Mon, 19 Jun 2017 15:27:06 -0300

perf tools: Use __maybe_unused consistently

Instead of defining __unused or redefining __maybe_unused.

Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Wang Nan <wangnan0@huawei.com>
Link: http://lkml.kernel.org/n/tip-4eleto5pih31jw1q4dypm9pf@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
---
 tools/perf/bench/numa.c         | 2 +-
 tools/perf/jvmti/jvmti_agent.h  | 2 --
 tools/perf/jvmti/libjvmti.c     | 5 +++--
 tools/perf/pmu-events/jevents.c | 4 ----
 tools/perf/util/evsel.c         | 3 ++-
 tools/perf/util/header.c        | 3 ++-
 6 files changed, 8 insertions(+), 11 deletions(-)

diff --git a/tools/perf/bench/numa.c b/tools/perf/bench/numa.c
index 27de0c8..469d65b 100644
--- a/tools/perf/bench/numa.c
+++ b/tools/perf/bench/numa.c
@@ -700,7 +700,7 @@ static inline uint32_t lfsr_32(uint32_t lfsr)
  * kernel (KSM, zero page, etc.) cannot optimize away RAM
  * accesses:
  */
-static inline u64 access_data(u64 *data __attribute__((unused)), u64 val)
+static inline u64 access_data(u64 *data, u64 val)
 {
 	if (g->p.data_reads)
 		val += *data;
diff --git a/tools/perf/jvmti/jvmti_agent.h b/tools/perf/jvmti/jvmti_agent.h
index bedf5d0..c53a41f 100644
--- a/tools/perf/jvmti/jvmti_agent.h
+++ b/tools/perf/jvmti/jvmti_agent.h
@@ -5,8 +5,6 @@
 #include <stdint.h>
 #include <jvmti.h>
 
-#define __unused __attribute__((unused))
-
 #if defined(__cplusplus)
 extern "C" {
 #endif
diff --git a/tools/perf/jvmti/libjvmti.c b/tools/perf/jvmti/libjvmti.c
index 5612641..6d71090 100644
--- a/tools/perf/jvmti/libjvmti.c
+++ b/tools/perf/jvmti/libjvmti.c
@@ -1,3 +1,4 @@
+#include <linux/compiler.h>
 #include <sys/types.h>
 #include <stdio.h>
 #include <string.h>
@@ -238,7 +239,7 @@ code_generated_cb(jvmtiEnv *jvmti,
 }
 
 JNIEXPORT jint JNICALL
-Agent_OnLoad(JavaVM *jvm, char *options, void *reserved __unused)
+Agent_OnLoad(JavaVM *jvm, char *options, void *reserved __maybe_unused)
 {
 	jvmtiEventCallbacks cb;
 	jvmtiCapabilities caps1;
@@ -313,7 +314,7 @@ Agent_OnLoad(JavaVM *jvm, char *options, void *reserved __unused)
 }
 
 JNIEXPORT void JNICALL
-Agent_OnUnload(JavaVM *jvm __unused)
+Agent_OnUnload(JavaVM *jvm __maybe_unused)
 {
 	int ret;
 
diff --git a/tools/perf/pmu-events/jevents.c b/tools/perf/pmu-events/jevents.c
index baa073f..bd0aabb 100644
--- a/tools/perf/pmu-events/jevents.c
+++ b/tools/perf/pmu-events/jevents.c
@@ -48,10 +48,6 @@
 #include "json.h"
 #include "jevents.h"
 
-#ifndef __maybe_unused
-#define __maybe_unused                  __attribute__((unused))
-#endif
-
 int verbose;
 char *prog;
 
diff --git a/tools/perf/util/evsel.c b/tools/perf/util/evsel.c
index cda44b0..7f78f27 100644
--- a/tools/perf/util/evsel.c
+++ b/tools/perf/util/evsel.c
@@ -15,6 +15,7 @@
 #include <traceevent/event-parse.h>
 #include <linux/hw_breakpoint.h>
 #include <linux/perf_event.h>
+#include <linux/compiler.h>
 #include <linux/err.h>
 #include <sys/ioctl.h>
 #include <sys/resource.h>
@@ -1441,7 +1442,7 @@ int perf_event_attr__fprintf(FILE *fp, struct perf_event_attr *attr,
 }
 
 static int __open_attr__fprintf(FILE *fp, const char *name, const char *val,
-				void *priv __attribute__((unused)))
+				void *priv __maybe_unused)
 {
 	return fprintf(fp, "  %-32s %s\n", name, val);
 }
diff --git a/tools/perf/util/header.c b/tools/perf/util/header.c
index b5baff3..76ed7d0 100644
--- a/tools/perf/util/header.c
+++ b/tools/perf/util/header.c
@@ -8,6 +8,7 @@
 #include <unistd.h>
 #include <stdio.h>
 #include <stdlib.h>
+#include <linux/compiler.h>
 #include <linux/list.h>
 #include <linux/kernel.h>
 #include <linux/bitops.h>
@@ -1274,7 +1275,7 @@ error:
 }
 
 static int __desc_attr__fprintf(FILE *fp, const char *name, const char *val,
-				void *priv __attribute__((unused)))
+				void *priv __maybe_unused)
 {
 	return fprintf(fp, ", %s = %s", name, val);
 }