From 6c3466435b03fb84647f5ad413f98f2ccb12b5c2 Mon Sep 17 00:00:00 2001
From: Arnaldo Carvalho de Melo <acme@redhat.com>
Date: Fri, 16 Jun 2017 11:39:15 -0300
Subject: tools: Adopt __noreturn from kernel sources

To have a more compact way to specify that a function doesn't return,
instead of the open coded:

	__attribute__((noreturn))

And use it instead of the tools/perf/ specific variation, NORETURN.

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-l0y144qzixcy5t4c6i7pdiqj@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
---
 tools/perf/util/scripting-engines/trace-event-python.c |  3 ++-
 tools/perf/util/usage.c                                |  6 +++---
 tools/perf/util/util.h                                 | 10 ++++------
 3 files changed, 9 insertions(+), 10 deletions(-)

(limited to 'tools/perf')

diff --git a/tools/perf/util/scripting-engines/trace-event-python.c b/tools/perf/util/scripting-engines/trace-event-python.c
index 40de3cb40d21..57b7a00e6f16 100644
--- a/tools/perf/util/scripting-engines/trace-event-python.c
+++ b/tools/perf/util/scripting-engines/trace-event-python.c
@@ -28,6 +28,7 @@
 #include <stdbool.h>
 #include <errno.h>
 #include <linux/bitmap.h>
+#include <linux/compiler.h>
 #include <linux/time64.h>
 
 #include "../../perf.h"
@@ -84,7 +85,7 @@ struct tables {
 
 static struct tables tables_global;
 
-static void handler_call_die(const char *handler_name) NORETURN;
+static void handler_call_die(const char *handler_name) __noreturn;
 static void handler_call_die(const char *handler_name)
 {
 	PyErr_Print();
diff --git a/tools/perf/util/usage.c b/tools/perf/util/usage.c
index 996046a66fe5..aacb65e079aa 100644
--- a/tools/perf/util/usage.c
+++ b/tools/perf/util/usage.c
@@ -16,13 +16,13 @@ static void report(const char *prefix, const char *err, va_list params)
 	fprintf(stderr, " %s%s\n", prefix, msg);
 }
 
-static NORETURN void usage_builtin(const char *err)
+static __noreturn void usage_builtin(const char *err)
 {
 	fprintf(stderr, "\n Usage: %s\n", err);
 	exit(129);
 }
 
-static NORETURN void die_builtin(const char *err, va_list params)
+static __noreturn void die_builtin(const char *err, va_list params)
 {
 	report(" Fatal: ", err, params);
 	exit(128);
@@ -40,7 +40,7 @@ static void warn_builtin(const char *warn, va_list params)
 
 /* If we are in a dlopen()ed .so write to a global variable would segfault
  * (ugh), so keep things static. */
-static void (*usage_routine)(const char *err) NORETURN = usage_builtin;
+static void (*usage_routine)(const char *err) __noreturn = usage_builtin;
 static void (*error_routine)(const char *err, va_list params) = error_builtin;
 static void (*warn_routine)(const char *err, va_list params) = warn_builtin;
 
diff --git a/tools/perf/util/util.h b/tools/perf/util/util.h
index 5dfb9bb6482d..024b108dbbf6 100644
--- a/tools/perf/util/util.h
+++ b/tools/perf/util/util.h
@@ -11,20 +11,18 @@
 #include <stddef.h>
 #include <stdlib.h>
 #include <stdarg.h>
+#include <linux/compiler.h>
 #include <linux/types.h>
 
-#ifdef __GNUC__
-#define NORETURN __attribute__((__noreturn__))
-#else
-#define NORETURN
+#ifndef __GNUC__
 #ifndef __attribute__
 #define __attribute__(x)
 #endif
 #endif
 
 /* General helper functions */
-void usage(const char *err) NORETURN;
-void die(const char *err, ...) NORETURN __attribute__((format (printf, 1, 2)));
+void usage(const char *err) __noreturn;
+void die(const char *err, ...) __noreturn __attribute__((format (printf, 1, 2)));
 int error(const char *err, ...) __attribute__((format (printf, 1, 2)));
 void warning(const char *err, ...) __attribute__((format (printf, 1, 2)));
 
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