perf: Add DIE_IF() macro for error checking

Add DIE_IF() macro and replace ERR_IF() with it, and use
linux/stringify.h.

Signed-off-by: Masami Hiramatsu <mhiramat@redhat.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Steven Rostedt <rostedt@goodmis.org>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
LKML-Reference: <20091017000818.16556.82452.stgit@dhcp-100-2-132.bos.redhat.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>

1 files changed, 9 insertions, 0 deletions

diff --git a/tools/perf/util/util.h b/tools/perf/util/util.h
index 9de2329dd44d..0daa341734f9 100644
--- a/tools/perf/util/util.h
+++ b/tools/perf/util/util.h
@@ -134,6 +134,15 @@ extern void die(const char *err, ...) NORETURN __attribute__((format (printf, 1,
 extern int error(const char *err, ...) __attribute__((format (printf, 1, 2)));
 extern void warning(const char *err, ...) __attribute__((format (printf, 1, 2)));
 
+#include "../../../include/linux/stringify.h"
+
+#define DIE_IF(cnd)     \
+        do { if (cnd)   \
+                die(" at (" __FILE__ ":" __stringify(__LINE__) "): "    \
+                    __stringify(cnd) "\n");                             \
+        } while (0)
+
+
 extern void set_die_routine(void (*routine)(const char *err, va_list params) NORETURN);
 
 extern int prefixcmp(const char *str, const char *prefix);