perf tools: Introduce event_format__fprintf method

The existing one, event_format__print() uses stdout unconditionally,
and 'perf trace' needs to use it to format into a file that may have
been set by the user, i.e. 'trace -o file.output'.

Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Borislav Petkov <bp@suse.de>
Cc: David Ahern <dsahern@gmail.com>
Cc: Don Zickus <dzickus@redhat.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
Cc: Steven Rostedt <rostedt@goodmis.org>
Link: http://lkml.kernel.org/n/tip-7l0mgm91hwg0bby00s5pse8r@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

2 files changed, 12 insertions, 3 deletions

diff --git a/tools/perf/util/trace-event-parse.c b/tools/perf/util/trace-event-parse.c
index c36636fd825b..25d6c737be3e 100644
--- a/tools/perf/util/trace-event-parse.c
+++ b/tools/perf/util/trace-event-parse.c
@@ -112,8 +112,8 @@ unsigned long long read_size(struct event_format *event, void *ptr, int size)
         return pevent_read_number(event->pevent, ptr, size);
 }
 
-void event_format__print(struct event_format *event,
-                         int cpu, void *data, int size)
+void event_format__fprintf(struct event_format *event,
+                           int cpu, void *data, int size, FILE *fp)
 {
         struct pevent_record record;
         struct trace_seq s;
@@ -125,10 +125,16 @@ void event_format__print(struct event_format *event,
 
         trace_seq_init(&s);
         pevent_event_info(&s, event, &record);
-        trace_seq_do_printf(&s);
+        trace_seq_do_fprintf(&s, fp);
         trace_seq_destroy(&s);
 }
 
+void event_format__print(struct event_format *event,
+                         int cpu, void *data, int size)
+{
+        return event_format__fprintf(event, cpu, data, size, stdout);
+}
+
 void parse_proc_kallsyms(struct pevent *pevent,
                          char *file, unsigned int size __maybe_unused)
 {
diff --git a/tools/perf/util/trace-event.h b/tools/perf/util/trace-event.h
index 52aaa19e1eb1..356629a30ca9 100644
--- a/tools/perf/util/trace-event.h
+++ b/tools/perf/util/trace-event.h
@@ -23,6 +23,9 @@ trace_event__tp_format(const char *sys, const char *name);
 
 int bigendian(void);
 
+void event_format__fprintf(struct event_format *event,
+                           int cpu, void *data, int size, FILE *fp);
+
 void event_format__print(struct event_format *event,
                          int cpu, void *data, int size);