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perf evsel: Introduce append_filter() method

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To allow building filters in evsel->filter, that will eventually be
applied via perf_evsel__apply_filter().

Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Borislav Petkov <bp@suse.de>
Cc: David Ahern <dsahern@gmail.com>
Cc: Don Zickus <dzickus@redhat.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Stephane Eranian <eranian@google.com>
Link: http://lkml.kernel.org/n/tip-sjfoes3pycx7nlpmgedca13v@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
This commit is contained in:
Arnaldo Carvalho de Melo 2015-07-04 12:19:13 -03:00
parent 94ad89bc8a
commit 64ec84f5f9
2 changed files with 19 additions and 0 deletions
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17
tools/perf/util/evsel.c
View File

@ -836,6 +836,23 @@ int perf_evsel__set_filter(struct perf_evsel *evsel, const char *filter)
return -1;
}
int perf_evsel__append_filter(struct perf_evsel *evsel,
const char *op, const char *filter)
{
char *new_filter;
if (evsel->filter == NULL)
return perf_evsel__set_filter(evsel, filter);
if (asprintf(&new_filter,"(%s) %s (%s)", evsel->filter, op, filter) > 0) {
free(evsel->filter);
evsel->filter = new_filter;
return 0;
}
return -1;
}
int perf_evsel__enable(struct perf_evsel *evsel, int ncpus, int nthreads)
{
return perf_evsel__run_ioctl(evsel, ncpus, nthreads,

2
tools/perf/util/evsel.h
View File

@ -183,6 +183,8 @@ void perf_evsel__set_sample_id(struct perf_evsel *evsel,
bool use_sample_identifier);
int perf_evsel__set_filter(struct perf_evsel *evsel, const char *filter);
int perf_evsel__append_filter(struct perf_evsel *evsel,
const char *op, const char *filter);
int perf_evsel__apply_filter(struct perf_evsel *evsel, int ncpus, int nthreads,
const char *filter);
int perf_evsel__enable(struct perf_evsel *evsel, int ncpus, int nthreads);