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Subject[PATCH 22/22] perf tools: Overload pr_stat traceevent print function
Date
The traceevent lib uses pr_stat to display all standard
info. It's defined as __weak. Overloading it with perf
version plugged into perf output system logic.

Displaying the pr_stat stuff under '-v' option.

Signed-off-by: Jiri Olsa <jolsa@redhat.com>
Cc: Corey Ashford <cjashfor@linux.vnet.ibm.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Steven Rostedt <rostedt@goodmis.org>
Cc: David Ahern <dsahern@gmail.com>
---
tools/perf/util/debug.c | 16 ++++++++++++++++
tools/perf/util/debug.h | 2 ++
2 files changed, 18 insertions(+)

diff --git a/tools/perf/util/debug.c b/tools/perf/util/debug.c
index 399e74c..dc93bc3 100644
--- a/tools/perf/util/debug.c
+++ b/tools/perf/util/debug.c
@@ -33,6 +33,22 @@ int eprintf(int level, const char *fmt, ...)
return ret;
}

+/*
+ * Overloading libtraceevent standard info print
+ * function, display with -v in perf.
+ */
+void pr_stat(const char *fmt, ...)
+{
+ va_list args;
+
+ if (verbose >= 1) {
+ va_start(args, fmt);
+ vfprintf(stderr, fmt, args);
+ fprintf(stderr, "\n");
+ va_end(args);
+ }
+}
+
int dump_printf(const char *fmt, ...)
{
va_list args;
diff --git a/tools/perf/util/debug.h b/tools/perf/util/debug.h
index efbd988..443694c 100644
--- a/tools/perf/util/debug.h
+++ b/tools/perf/util/debug.h
@@ -17,4 +17,6 @@ void trace_event(union perf_event *event);
int ui__error(const char *format, ...) __attribute__((format(printf, 1, 2)));
int ui__warning(const char *format, ...) __attribute__((format(printf, 1, 2)));

+void pr_stat(const char *fmt, ...);
+
#endif /* __PERF_DEBUG_H */
--
1.8.3.1


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