[PATCH 2/5] perf evlist: Fix id pos in perf_evlist__open()

From: Arnaldo Carvalho de Melo
Date: Tue Sep 10 2013 - 14:13:35 EST


From: Adrian Hunter <adrian.hunter@xxxxxxxxx>

Ensure the id_pos is correct when perf_evlist__open() is used.

This fixes a problem introduced in 7556257 that broke 'perf kvm stat
live' in that this tool wasn't updated to use the sample_type bits
setting helpers.

Signed-off-by: Adrian Hunter <adrian.hunter@xxxxxxxxx>
Tested-by: David Ahern <dsahern@xxxxxxxxx>
Acked-by: David Ahern <dsahern@xxxxxxxxx>
Cc: David Ahern <dsahern@xxxxxxxxx>
Cc: Frederic Weisbecker <fweisbec@xxxxxxxxx>
Cc: Jiri Olsa <jolsa@xxxxxxxxxx>
Cc: Mike Galbraith <efault@xxxxxx>
Cc: Namhyung Kim <namhyung@xxxxxxxxx>
Cc: Paul Mackerras <paulus@xxxxxxxxx>
Cc: Peter Zijlstra <a.p.zijlstra@xxxxxxxxx>
Cc: Stephane Eranian <eranian@xxxxxxxxxx>
Link: http://lkml.kernel.org/r/1378496412-2424-2-git-send-email-adrian.hunter@xxxxxxxxx
Signed-off-by: Arnaldo Carvalho de Melo <acme@xxxxxxxxxx>
---
tools/perf/util/evlist.c | 12 ++++++++++++
1 file changed, 12 insertions(+)

diff --git a/tools/perf/util/evlist.c b/tools/perf/util/evlist.c
index 7101283..f9f77be 100644
--- a/tools/perf/util/evlist.c
+++ b/tools/perf/util/evlist.c
@@ -64,6 +64,16 @@ void perf_evlist__set_id_pos(struct perf_evlist *evlist)
evlist->is_pos = first->is_pos;
}

+static void perf_evlist__update_id_pos(struct perf_evlist *evlist)
+{
+ struct perf_evsel *evsel;
+
+ list_for_each_entry(evsel, &evlist->entries, node)
+ perf_evsel__calc_id_pos(evsel);
+
+ perf_evlist__set_id_pos(evlist);
+}
+
static void perf_evlist__purge(struct perf_evlist *evlist)
{
struct perf_evsel *pos, *n;
@@ -920,6 +930,8 @@ int perf_evlist__open(struct perf_evlist *evlist)
struct perf_evsel *evsel;
int err;

+ perf_evlist__update_id_pos(evlist);
+
list_for_each_entry(evsel, &evlist->entries, node) {
err = perf_evsel__open(evsel, evlist->cpus, evlist->threads);
if (err < 0)
--
1.8.1.4

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