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perf tools: Improve support for sessions with multiple events

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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>
This commit is contained in:
Arnaldo Carvalho de Melo
2011-03-05 21:40:06 -03:00
parent 3d3b5e9599
commit e248de331a
10 changed files with 208 additions and 196 deletions
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6
tools/perf/util/hist.c
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@ -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;