[tip:perf/core] perf tools: Add perf_event__fprintf_event_update function

[tip-bot for Jiri Olsa]

Commit-ID:  c853f9394b7bc189632673cac802bdbf6537463b
Gitweb:     http://git.kernel.org/tip/c853f9394b7bc189632673cac802bdbf6537463b
Author:     Jiri Olsa <jolsa@xxxxxxxxxx>
AuthorDate: Sun, 25 Oct 2015 15:51:41 +0100
Committer:  Arnaldo Carvalho de Melo <acme@xxxxxxxxxx>
CommitDate: Thu, 17 Dec 2015 15:14:36 -0300

perf tools: Add perf_event__fprintf_event_update function

To display a 'event update' event for raw dump.

Signed-off-by: Jiri Olsa <jolsa@xxxxxxxxxx>
Tested-by: Kan Liang <kan.liang@xxxxxxxxx>
Cc: David Ahern <dsahern@xxxxxxxxx>
Cc: Namhyung Kim <namhyung@xxxxxxxxxx>
Cc: Peter Zijlstra <a.p.zijlstra@xxxxxxxxx>
Link: http://lkml.kernel.org/r/1445784728-21732-26-git-send-email-jolsa@xxxxxxxxxx
Signed-off-by: Arnaldo Carvalho de Melo <acme@xxxxxxxxxx>
---
 tools/perf/util/header.c | 38 ++++++++++++++++++++++++++++++++++++++
 tools/perf/util/header.h |  1 +
 2 files changed, 39 insertions(+)

diff --git a/tools/perf/util/header.c b/tools/perf/util/header.c
index 79d3eb9..49676c1 100644
--- a/tools/perf/util/header.c
+++ b/tools/perf/util/header.c
@@ -2793,6 +2793,44 @@ perf_event__synthesize_event_update_cpus(struct perf_tool *tool,
 	return err;
 }
 
+size_t perf_event__fprintf_event_update(union perf_event *event, FILE *fp)
+{
+	struct event_update_event *ev = &event->event_update;
+	struct event_update_event_scale *ev_scale;
+	struct event_update_event_cpus *ev_cpus;
+	struct cpu_map *map;
+	size_t ret;
+
+	ret = fprintf(fp, "\n... id:    %" PRIu64 "\n", ev->id);
+
+	switch (ev->type) {
+	case PERF_EVENT_UPDATE__SCALE:
+		ev_scale = (struct event_update_event_scale *) ev->data;
+		ret += fprintf(fp, "... scale: %f\n", ev_scale->scale);
+		break;
+	case PERF_EVENT_UPDATE__UNIT:
+		ret += fprintf(fp, "... unit:  %s\n", ev->data);
+		break;
+	case PERF_EVENT_UPDATE__NAME:
+		ret += fprintf(fp, "... name:  %s\n", ev->data);
+		break;
+	case PERF_EVENT_UPDATE__CPUS:
+		ev_cpus = (struct event_update_event_cpus *) ev->data;
+		ret += fprintf(fp, "... ");
+
+		map = cpu_map__new_data(&ev_cpus->cpus);
+		if (map)
+			ret += cpu_map__fprintf(map, fp);
+		else
+			ret += fprintf(fp, "failed to get cpus\n");
+		break;
+	default:
+		ret += fprintf(fp, "... unknown type\n");
+		break;
+	}
+
+	return ret;
+}
 
 int perf_event__synthesize_attrs(struct perf_tool *tool,
 				   struct perf_session *session,
diff --git a/tools/perf/util/header.h b/tools/perf/util/header.h
index a1bc0c57..710deec 100644
--- a/tools/perf/util/header.h
+++ b/tools/perf/util/header.h
@@ -122,6 +122,7 @@ int perf_event__process_attr(struct perf_tool *tool, union perf_event *event,
 int perf_event__process_event_update(struct perf_tool *tool __maybe_unused,
 				     union perf_event *event,
 				     struct perf_evlist **pevlist);
+size_t perf_event__fprintf_event_update(union perf_event *event, FILE *fp);
 
 int perf_event__synthesize_tracing_data(struct perf_tool *tool,
 					int fd, struct perf_evlist *evlist,
--
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