linux-kernel - [PATCH 11/21] perf tools: Add perf_sample_

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Date:   Wed, 24 Jan 2018 12:51:33 +0100
From:   Jiri Olsa <jolsa@...nel.org>
To:     Peter Zijlstra <a.p.zijlstra@...llo.nl>,
        Ingo Molnar <mingo@...nel.org>
Cc:     lkml <linux-kernel@...r.kernel.org>,
        Namhyung Kim <namhyung@...nel.org>,
        David Ahern <dsahern@...il.com>,
        Andi Kleen <ak@...ux.intel.com>,
        Alexander Shishkin <alexander.shishkin@...ux.intel.com>,
        Andy Lutomirski <luto@...capital.net>,
        Arnaldo Carvalho de Melo <acme@...nel.org>
Subject: [PATCH 11/21] perf tools: Add perf_sample__parse function

Adding perf_sample__parse function to separate out
the parse sampling. It will be used later in the
patchset.

Link: http://lkml.kernel.org/n/tip-q4u4tp1jra0x5x3vly7wwvir@git.kernel.org
Signed-off-by: Jiri Olsa <jolsa@...nel.org>
---
 tools/perf/util/evsel.c | 47 +++++++++++++++++++++++++++--------------------
 1 file changed, 27 insertions(+), 20 deletions(-)

diff --git a/tools/perf/util/evsel.c b/tools/perf/util/evsel.c
index 0f62de48594e..5a95839994a1 100644
--- a/tools/perf/util/evsel.c
+++ b/tools/perf/util/evsel.c
@@ -2045,8 +2045,9 @@ perf_event__check_size(union perf_event *event, unsigned int sample_size)
 	return 0;
 }
 
-int perf_evsel__parse_sample(struct perf_evsel *evsel, union perf_event *event,
-			     struct perf_sample *data)
+static int
+perf_sample__parse(struct perf_sample *data, struct perf_evsel *evsel,
+		   union perf_event *event)
 {
 	u64 type = evsel->attr.sample_type;
 	bool swapped = evsel->needs_swap;
@@ -2061,26 +2062,8 @@ int perf_evsel__parse_sample(struct perf_evsel *evsel, union perf_event *event,
 	 */
 	union u64_swap u;
 
-	memset(data, 0, sizeof(*data));
-	data->cpu = data->pid = data->tid = -1;
-	data->stream_id = data->id = data->time = -1ULL;
-	data->period = evsel->attr.sample_period;
-	data->cpumode = event->header.misc & PERF_RECORD_MISC_CPUMODE_MASK;
-	data->misc    = event->header.misc;
-	data->id = -1ULL;
-	data->data_src = PERF_MEM_DATA_SRC_NONE;
-
-	if (event->header.type != PERF_RECORD_SAMPLE) {
-		if (!evsel->attr.sample_id_all)
-			return 0;
-		return perf_evsel__parse_id_sample(evsel, event, data);
-	}
-
 	array = event->sample.array;
 
-	if (perf_event__check_size(event, evsel->sample_size))
-		return -EFAULT;
-
 	if (type & PERF_SAMPLE_IDENTIFIER) {
 		data->id = *array;
 		array++;
@@ -2324,6 +2307,30 @@ int perf_evsel__parse_sample(struct perf_evsel *evsel, union perf_event *event,
 	return 0;
 }
 
+int perf_evsel__parse_sample(struct perf_evsel *evsel, union perf_event *event,
+			     struct perf_sample *data)
+{
+	memset(data, 0, sizeof(*data));
+	data->cpu = data->pid = data->tid = -1;
+	data->stream_id = data->id = data->time = -1ULL;
+	data->period = evsel->attr.sample_period;
+	data->cpumode = event->header.misc & PERF_RECORD_MISC_CPUMODE_MASK;
+	data->misc    = event->header.misc;
+	data->id = -1ULL;
+	data->data_src = PERF_MEM_DATA_SRC_NONE;
+
+	if (event->header.type != PERF_RECORD_SAMPLE) {
+		if (!evsel->attr.sample_id_all)
+			return 0;
+		return perf_evsel__parse_id_sample(evsel, event, data);
+	}
+
+	if (perf_event__check_size(event, evsel->sample_size))
+		return -EFAULT;
+
+	return perf_sample__parse(data, evsel, event);
+}
+
 int perf_evsel__parse_sample_timestamp(struct perf_evsel *evsel,
 				       union perf_event *event,
 				       u64 *timestamp)
-- 
2.13.6