diff options
author | Arnaldo Carvalho de Melo <acme@redhat.com> | 2012-08-07 09:58:03 -0300 |
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committer | Arnaldo Carvalho de Melo <acme@redhat.com> | 2012-08-07 23:43:37 -0300 |
commit | fcf65bf149afa91b875ffde4455967cb63ee0be9 (patch) | |
tree | 9b6137e60d4142b1aa00f9e20860bdd8374035d3 /tools/perf/util/header.c | |
parent | 8b6ee4c5d48d93527dcf6e36c51cbb7703d7fffb (diff) |
perf evsel: Cache associated event_format
We already lookup the associated event_format when reading the perf.data
header, so that we can cache the tracepoint name in evsel->name, so do
it a little further and save the event_format itself, so that we can
avoid relookups in tools that need to access it.
Change the tools to take the most obvious advantage, when they were
using pevent_find_event directly. More work is needed for further
removing the need of a pointer to pevent, such as when asking for event
field values ("common_pid" and the other common fields and per
event_format fields).
This is something that was planned but only got actually done when
Andrey Wagin needed to do this lookup at perf_tool->sample() time, when
we don't have access to pevent (session->pevent) to use with
pevent_find_event().
Cc: Andrey Wagin <avagin@gmail.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Namhyung Kim <namhyung@gmail.com>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Link: http://lkml.kernel.org/n/tip-txkvew2ckko0b594ae8fbnyk@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Diffstat (limited to 'tools/perf/util/header.c')
-rw-r--r-- | tools/perf/util/header.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/tools/perf/util/header.c b/tools/perf/util/header.c index e2b4864bd11e..b2da439bce7a 100644 --- a/tools/perf/util/header.c +++ b/tools/perf/util/header.c @@ -2123,6 +2123,7 @@ static int perf_evsel__set_tracepoint_name(struct perf_evsel *evsel, if (event->name == NULL) return -1; + evsel->tp_format = event; return 0; } |