tools: Adopt __printf from kernel sources

To have a more compact way to ask the compiler to perform printf like
vargargs validation.

v2: Fixed up build on arm, squashing a patch by Kim Phillips, thanks!

Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Kim Phillips <kim.phillips@arm.com>
Cc: Mathieu Poirier <mathieu.poirier@linaro.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Wang Nan <wangnan0@huawei.com>
Link: http://lkml.kernel.org/n/tip-dopkqmmuqs04cxzql0024nnu@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

1 files changed, 3 insertions, 9 deletions

diff --git a/tools/perf/util/util.h b/tools/perf/util/util.h
index 024b108dbbf6..21c6db173bcc 100644
--- a/tools/perf/util/util.h
+++ b/tools/perf/util/util.h
@@ -14,17 +14,11 @@
 #include <linux/compiler.h>
 #include <linux/types.h>
 
-#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)));
-int error(const char *err, ...) __attribute__((format (printf, 1, 2)));
-void warning(const char *err, ...) __attribute__((format (printf, 1, 2)));
+void die(const char *err, ...) __noreturn __printf(1, 2);
+int error(const char *err, ...) __printf(1, 2);
+void warning(const char *err, ...) __printf(1, 2);
 
 void set_warning_routine(void (*routine)(const char *err, va_list params));