linux-kernel - [PATCH V6 2/3] perf tools: new tracepoint specific function

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Message-Id: <1473957428-28311-3-git-send-email-mathieu.poirier@linaro.org>
Date:   Thu, 15 Sep 2016 10:37:07 -0600
From:   Mathieu Poirier <mathieu.poirier@...aro.org>
To:     acme@...nel.org, adrian.hunter@...el.com
Cc:     mingo@...hat.com, peterz@...radead.org,
        alexander.shishkin@...ux.intel.com, jolsa@...nel.org,
        acme@...radead.org, linux-kernel@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org
Subject: [PATCH V6 2/3] perf tools: 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@...aro.org>
---
 tools/perf/builtin-trace.c     | 7 +++----
 tools/perf/util/evsel.c        | 9 +++++++--
 tools/perf/util/evsel.h        | 3 +--
 tools/perf/util/parse-events.c | 4 ++--
 4 files changed, 13 insertions(+), 10 deletions(-)

diff --git a/tools/perf/builtin-trace.c b/tools/perf/builtin-trace.c
index 4c2704332c14..34effab09f39 100644
--- a/tools/perf/builtin-trace.c
+++ b/tools/perf/builtin-trace.c
@@ -2148,11 +2148,10 @@ static int trace__set_ev_qualifier_filter(struct trace *trace)
 	if (filter == NULL)
 		goto out_enomem;
 
-	if (!perf_evsel__append_filter(trace->syscalls.events.sys_enter,
-				       "(%s) && (%s)", filter)) {
+	if (!perf_evsel__append_tp_filter(trace->syscalls.events.sys_enter,
+					  filter)) {
 		sys_exit = trace->syscalls.events.sys_exit;
-		err = perf_evsel__append_filter(sys_exit,
-						"(%s) && (%s)", filter);
+		err = perf_evsel__append_tp_filter(sys_exit, filter);
 	}
 
 	free(filter);
diff --git a/tools/perf/util/evsel.c b/tools/perf/util/evsel.c
index b93369745e08..a99e82d97df2 100644
--- a/tools/perf/util/evsel.c
+++ b/tools/perf/util/evsel.c
@@ -1045,8 +1045,8 @@ 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 *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 @@ int perf_evsel__append_filter(struct perf_evsel *evsel,
 	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 7ab59f15892f..36ed0997e65b 100644
--- a/tools/perf/util/evsel.h
+++ b/tools/perf/util/evsel.h
@@ -233,8 +233,7 @@ 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 *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 9692300585f6..751b48fc641c 100644
--- a/tools/perf/util/parse-events.c
+++ b/tools/perf/util/parse-events.c
@@ -1762,7 +1762,7 @@ static int set_filter(struct perf_evsel *evsel, const void *arg)
 		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;
@@ -1793,7 +1793,7 @@ static int add_exclude_perf_filter(struct perf_evsel *evsel,
 
 	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;
-- 
2.7.4