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| author | Arnaldo Carvalho de Melo <acme@redhat.com> | 2012-09-18 18:21:50 +0400 |
|---|---|---|
| committer | Arnaldo Carvalho de Melo <acme@redhat.com> | 2012-09-24 19:26:59 +0400 |
| commit | efd2b924d3af0efd360cb5b7f29ddc9bc74fce4b (patch) | |
| tree | d33cf0ddc12567a6cbef32b614b9873044decc95 /tools/perf/util/evsel.h | |
| parent | 2b29175d2b212d88f100c8819aaea097be61e062 (diff) | |
| download | linux-efd2b924d3af0efd360cb5b7f29ddc9bc74fce4b.tar.xz | |
perf evsel: Provide a new constructor for tracepoints
The existing constructor receives a perf_event_attr filled with the
event type and the config.
To reduce the boilerplate for tracepoints, provide a new constructor,
perf_evsel__newtp() that receives the tracepoint name and will open
the debugfs file, call into libtraceevent new pevent_parse_format file
to fill its ->tp_format member, so that users can then just call
perf_evsel__field() to access its fields.
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>
Cc: Stephane Eranian <eranian@google.com>
Cc: Steven Rostedt <rostedt@goodmis.org>
Link: http://lkml.kernel.org/n/tip-6du8dl1hz0y5l4cybodye7hn@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Diffstat (limited to 'tools/perf/util/evsel.h')
| -rw-r--r-- | tools/perf/util/evsel.h | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/tools/perf/util/evsel.h b/tools/perf/util/evsel.h index 93876bad2e52..bb445d1cbc7b 100644 --- a/tools/perf/util/evsel.h +++ b/tools/perf/util/evsel.h @@ -81,6 +81,7 @@ struct perf_evlist; struct perf_record_opts; struct perf_evsel *perf_evsel__new(struct perf_event_attr *attr, int idx); +struct perf_evsel *perf_evsel__newtp(const char *sys, const char *name, int idx); void perf_evsel__init(struct perf_evsel *evsel, struct perf_event_attr *attr, int idx); void perf_evsel__exit(struct perf_evsel *evsel); @@ -128,6 +129,10 @@ char *perf_evsel__strval(struct perf_evsel *evsel, struct perf_sample *sample, u64 perf_evsel__intval(struct perf_evsel *evsel, struct perf_sample *sample, const char *name); +struct format_field; + +struct format_field *perf_evsel__field(struct perf_evsel *evsel, const char *name); + #define perf_evsel__match(evsel, t, c) \ (evsel->attr.type == PERF_TYPE_##t && \ evsel->attr.config == PERF_COUNT_##c) |