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author | Arnaldo Carvalho de Melo <acme@redhat.com> | 2011-03-06 01:40:06 +0100 |
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committer | Arnaldo Carvalho de Melo <acme@redhat.com> | 2011-03-06 17:13:40 +0100 |
commit | e248de331a452f8771eda6ed4bb30d92c82df28b (patch) | |
tree | 7ef04743a7bf7a1da354a3b82536ef32504823d9 /tools/perf/util/hist.c | |
parent | perf evlist: Split perf_evlist__id_hash (diff) | |
download | linux-e248de331a452f8771eda6ed4bb30d92c82df28b.tar.xz linux-e248de331a452f8771eda6ed4bb30d92c82df28b.zip |
perf tools: Improve support for sessions with multiple events
By creating an perf_evlist out of the attributes in the perf.data file
header, so that we can use evlists and evsels when reading recorded
sessions in addition to when we record sessions.
More work is needed to allow tools to allow the user to select which
events are wanted when browsing sessions, be it just one or a subset of
them, aggregated or showed at the same time but with different
indications on the UI to allow seeing workloads thru different views at
the same time.
But the overall goal/trend is to more uniformly use evsels and evlists.
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
Cc: Tom Zanussi <tzanussi@gmail.com>
LKML-Reference: <new-submission>
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Diffstat (limited to 'tools/perf/util/hist.c')
-rw-r--r-- | tools/perf/util/hist.c | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/tools/perf/util/hist.c b/tools/perf/util/hist.c index f7ad6bdbc667..627a02e03c57 100644 --- a/tools/perf/util/hist.c +++ b/tools/perf/util/hist.c @@ -984,8 +984,12 @@ size_t hists__fprintf_nr_events(struct hists *self, FILE *fp) size_t ret = 0; for (i = 0; i < PERF_RECORD_HEADER_MAX; ++i) { - const char *name = perf_event__name(i); + const char *name; + if (self->stats.nr_events[i] == 0) + continue; + + name = perf_event__name(i); if (!strcmp(name, "UNKNOWN")) continue; |