Commit-ID: 64ec84f5f96ea1d043c01e32e49e45286c6f4160
Gitweb: http://git.kernel.org/tip/64ec84f5f96ea1d043c01e32e49e45286c6f4160
Author: Arnaldo Carvalho de Melo <acme@xxxxxxxxxx>
AuthorDate: Sat, 4 Jul 2015 12:19:13 -0300
Committer: Arnaldo Carvalho de Melo <acme@xxxxxxxxxx>
CommitDate: Mon, 6 Jul 2015 08:57:51 -0300
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@xxxxxxxxx>
Cc: Borislav Petkov <bp@xxxxxxx>
Cc: David Ahern <dsahern@xxxxxxxxx>
Cc: Don Zickus <dzickus@xxxxxxxxxx>
Cc: Frederic Weisbecker <fweisbec@xxxxxxxxx>
Cc: Jiri Olsa <jolsa@xxxxxxxxxx>
Cc: Namhyung Kim <namhyung@xxxxxxxxxx>
Cc: Stephane Eranian <eranian@xxxxxxxxxx>
Link: http://lkml.kernel.org/n/tip-sjfoes3pycx7nlpmgedca13v@xxxxxxxxxxxxxx
Signed-off-by: Arnaldo Carvalho de Melo <acme@xxxxxxxxxx>
---
tools/perf/util/evsel.c | 17 +++++++++++++++++
tools/perf/util/evsel.h | 2 ++
2 files changed, 19 insertions(+)
diff --git a/tools/perf/util/evsel.c b/tools/perf/util/evsel.c
index ae925b9..6cc97f3 100644
--- a/tools/perf/util/evsel.c
+++ b/tools/perf/util/evsel.c
@@ -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,
diff --git a/tools/perf/util/evsel.h b/tools/perf/util/evsel.h
index 8aea4ba..fe9f327 100644
--- a/tools/perf/util/evsel.h
+++ b/tools/perf/util/evsel.h
@@ -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);
--
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