tools include: Move perf's bug.h to a generic place

So that it can be shared with others like libtraceevent.

Signed-off-by: Namhyung Kim <namhyung@kernel.org>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Namhyung Kim <namhyung.kim@lge.com>
Cc: Steven Rostedt <rostedt@goodmis.org>
Link: http://lkml.kernel.org/r/1389276059-8829-4-git-send-email-namhyung@kernel.org
[ Added the new header to tools/perf/MANIFEST ]
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

1 files changed, 23 insertions, 0 deletions

diff --git a/tools/include/asm/bug.h b/tools/include/asm/bug.h
new file mode 100644
index 000000000000..eca78df7b8f2
--- /dev/null
+++ b/tools/include/asm/bug.h
@@ -0,0 +1,23 @@
+#ifndef _TOOLS_ASM_BUG_H
+#define _TOOLS_ASM_BUG_H
+
+#define __WARN_printf(arg...)   do { fprintf(stderr, arg); } while (0)
+
+#define WARN(condition, format...) ({           \
+        int __ret_warn_on = !!(condition);      \
+        if (unlikely(__ret_warn_on))            \
+                __WARN_printf(format);          \
+        unlikely(__ret_warn_on);                \
+})
+
+#define WARN_ONCE(condition, format...) ({      \
+        static int __warned;                    \
+        int __ret_warn_once = !!(condition);    \
+                                                \
+        if (unlikely(__ret_warn_once))          \
+                if (WARN(!__warned, format))    \
+                        __warned = 1;           \
+        unlikely(__ret_warn_once);              \
+})
+
+#endif /* _TOOLS_ASM_BUG_H */