perf evsel: New tracepoint specific function

Making function perf_evsel__append_filter() static and introducing a new
tracepoint specific function to append filters.  That way we eliminate
redundant code and avoid formatting mistake.

Signed-off-by: Mathieu Poirier <mathieu.poirier@linaro.org>
Acked-by: Adrian Hunter <adrian.hunter@intel.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: linux-arm-kernel@lists.infradead.org
Link: http://lkml.kernel.org/r/1474037045-31730-3-git-send-email-mathieu.poirier@linaro.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
diff --git a/tools/perf/util/evsel.c b/tools/perf/util/evsel.c
index 4f327b5..3b4e7c4 100644
--- a/tools/perf/util/evsel.c
+++ b/tools/perf/util/evsel.c
@@ -1045,8 +1045,8 @@
 	return -1;
 }
 
-int perf_evsel__append_filter(struct perf_evsel *evsel,
-			      const char *fmt, const char *filter)
+static int perf_evsel__append_filter(struct perf_evsel *evsel,
+				     const char *fmt, const char *filter)
 {
 	char *new_filter;
 
@@ -1062,6 +1062,11 @@
 	return -1;
 }
 
+int perf_evsel__append_tp_filter(struct perf_evsel *evsel, const char *filter)
+{
+	return perf_evsel__append_filter(evsel, "(%s) && (%s)", filter);
+}
+
 int perf_evsel__enable(struct perf_evsel *evsel)
 {
 	int nthreads = thread_map__nr(evsel->threads);
diff --git a/tools/perf/util/evsel.h b/tools/perf/util/evsel.h
index 7ef9602..1f8c48f 100644
--- a/tools/perf/util/evsel.h
+++ b/tools/perf/util/evsel.h
@@ -235,8 +235,7 @@
 			       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 *fmt, const char *filter);
+int perf_evsel__append_tp_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);
diff --git a/tools/perf/util/parse-events.c b/tools/perf/util/parse-events.c
index b14784c..16bf09c 100644
--- a/tools/perf/util/parse-events.c
+++ b/tools/perf/util/parse-events.c
@@ -1767,7 +1767,7 @@
 		return -1;
 	}
 
-	if (perf_evsel__append_filter(evsel, "(%s) && (%s)", str) < 0) {
+	if (perf_evsel__append_tp_filter(evsel, str) < 0) {
 		fprintf(stderr,
 			"not enough memory to hold filter string\n");
 		return -1;
@@ -1798,7 +1798,7 @@
 
 	snprintf(new_filter, sizeof(new_filter), "common_pid != %d", getpid());
 
-	if (perf_evsel__append_filter(evsel, "(%s) && (%s)", new_filter) < 0) {
+	if (perf_evsel__append_tp_filter(evsel, new_filter) < 0) {
 		fprintf(stderr,
 			"not enough memory to hold filter string\n");
 		return -1;