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Commit 64ec84f5 authored by Arnaldo Carvalho de Melo's avatar Arnaldo Carvalho de Melo
Browse files

perf evsel: Introduce append_filter() method 

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: default avatarArnaldo Carvalho de Melo <acme@redhat.com>
parent 94ad89bc

tools/perf/util/evsel.c

+17 −0
Original line number Diff line number Diff line
@@ -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,

tools/perf/util/evsel.h

+2 −0
Original line number Diff line number Diff line
@@ -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);