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perf evsel: Introduce set_filter method 

Replaces existing filter string with the one provided.

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-jst49z83li0yx3g18o54u51a@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
This commit is contained in:
Arnaldo Carvalho de Melo 2015-07-03 17:05:50 -03:00
parent f47805a2af
commit 12467ae4e3
3 changed files with 15 additions and 2 deletions
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13
tools/perf/util/evsel.c
View File

@ -823,6 +823,19 @@ int perf_evsel__apply_filter(struct perf_evsel *evsel, int ncpus, int nthreads,
(void *)filter);
}
int perf_evsel__set_filter(struct perf_evsel *evsel, const char *filter)
{
char *new_filter = strdup(filter);
if (new_filter != NULL) {
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,

1
tools/perf/util/evsel.h
View File

@ -182,6 +182,7 @@ void __perf_evsel__reset_sample_bit(struct perf_evsel *evsel,
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__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);

3
tools/perf/util/parse-events.c
View File

@ -1177,8 +1177,7 @@ int parse_filter(const struct option *opt, const char *str,
return -1;
}
last->filter = strdup(str);
if (last->filter == NULL) {
if (perf_evsel__set_filter(last, str) < 0) {
fprintf(stderr, "not enough memory to hold filter string\n");
return -1;
}