linux-kernel - [PATCH 14/26] perf tools: Add mmap3 events to --show-mmap-events option

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Date:   Sun, 13 Sep 2020 23:03:01 +0200
From:   Jiri Olsa <jolsa@...nel.org>
To:     Arnaldo Carvalho de Melo <acme@...nel.org>
Cc:     lkml <linux-kernel@...r.kernel.org>,
        Peter Zijlstra <a.p.zijlstra@...llo.nl>,
        Ingo Molnar <mingo@...nel.org>,
        Mark Rutland <mark.rutland@....com>,
        Namhyung Kim <namhyung@...nel.org>,
        Alexander Shishkin <alexander.shishkin@...ux.intel.com>,
        Michael Petlan <mpetlan@...hat.com>,
        Song Liu <songliubraving@...com>,
        "Frank Ch. Eigler" <fche@...hat.com>,
        Ian Rogers <irogers@...gle.com>,
        Stephane Eranian <eranian@...gle.com>,
        Alexey Budankov <alexey.budankov@...ux.intel.com>,
        Andi Kleen <ak@...ux.intel.com>,
        Adrian Hunter <adrian.hunter@...el.com>
Subject: [PATCH 14/26] perf tools: Add mmap3 events to --show-mmap-events option

Displaying mmap3 events for --show-mmap-events option,
the build id is displayed within <> braces:

  $ perf script --show-mmap-events
  kill 12148 13893.519014: PERF_RECORD_MMAP3 12148/12148: <43938d0803c5e3130ea679cd569aaf44b98d9ae8> [0x560e7d7f..
  kill 12148 13893.519420: PERF_RECORD_MMAP3 12148/12148: <1805c738c8f3ec0f47b7ea09080c28f34d18a82b> [0x7f9e7dfc..

Signed-off-by: Jiri Olsa <jolsa@...nel.org>
---
 tools/perf/builtin-script.c | 33 +++++++++++++++++++++++++++++++++
 1 file changed, 33 insertions(+)

diff --git a/tools/perf/builtin-script.c b/tools/perf/builtin-script.c
index d839983cfb88..9c09581d5cb0 100644
--- a/tools/perf/builtin-script.c
+++ b/tools/perf/builtin-script.c
@@ -2342,6 +2342,38 @@ static int process_mmap2_event(struct perf_tool *tool,
 			   event->mmap2.tid);
 }
 
+static int process_mmap3_event(struct perf_tool *tool,
+			      union perf_event *event,
+			      struct perf_sample *sample,
+			      struct machine *machine)
+{
+	struct thread *thread;
+	struct perf_script *script = container_of(tool, struct perf_script, tool);
+	struct perf_session *session = script->session;
+	struct evsel *evsel = perf_evlist__id2evsel(session->evlist, sample->id);
+
+	if (perf_event__process_mmap3(tool, event, sample, machine) < 0)
+		return -1;
+
+	thread = machine__findnew_thread(machine, event->mmap3.pid, event->mmap3.tid);
+	if (thread == NULL) {
+		pr_debug("problem processing MMAP2 event, skipping it.\n");
+		return -1;
+	}
+
+	if (!evsel->core.attr.sample_id_all) {
+		sample->cpu = 0;
+		sample->time = 0;
+		sample->tid = event->mmap3.tid;
+		sample->pid = event->mmap3.pid;
+	}
+	perf_sample__fprintf_start(script, sample, thread, evsel,
+				   PERF_RECORD_MMAP3, stdout);
+	perf_event__fprintf(event, machine, stdout);
+	thread__put(thread);
+	return 0;
+}
+
 static int process_switch_event(struct perf_tool *tool,
 				union perf_event *event,
 				struct perf_sample *sample,
@@ -2498,6 +2530,7 @@ static int __cmd_script(struct perf_script *script)
 	if (script->show_mmap_events) {
 		script->tool.mmap = process_mmap_event;
 		script->tool.mmap2 = process_mmap2_event;
+		script->tool.mmap3 = process_mmap3_event;
 	}
 	if (script->show_switch_events || (scripting_ops && scripting_ops->process_switch))
 		script->tool.context_switch = process_switch_event;
-- 
2.26.2