linux-kernel - [PATCH 3/3] perf script: Process event update events

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite for Android: free password hash cracker in your pocket

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-Id: <1460013073-18444-3-git-send-email-jolsa@kernel.org>
Date:	Thu,  7 Apr 2016 09:11:13 +0200
From:	Jiri Olsa <jolsa@...nel.org>
To:	Arnaldo Carvalho de Melo <acme@...nel.org>
Cc:	lkml <linux-kernel@...r.kernel.org>,
	David Ahern <dsahern@...il.com>,
	Ingo Molnar <mingo@...nel.org>,
	Namhyung Kim <namhyung@...nel.org>,
	Peter Zijlstra <a.p.zijlstra@...llo.nl>,
	Andreas Hollmann <hollmann@...tum.de>,
	Milian Wolff <milian.wolff@...b.com>
Subject: [PATCH 3/3] perf script: Process event update events

Andreas reported following command produces no output:

  $ cat test.py
  #!/usr/bin/env python

  def stat__krava(cpu, thread, time, val, ena, run):
      print "event %s cpu %d, thread %d, time %d, val %d, ena %d, run %d" % \
            ("krava", cpu, thread, time, val, ena, run)
  $ perf stat -a -I 1000 -e cycles,"cpu/config=0x6530160,name=krava/" record | perf script -s test.py

The reason is that perf script does not process event update
events and will never get the event name update thus the
python callback is never called.

The fix is just to add already existing callback we use
in the perf stat report.

Reported-by: Andreas Hollmann <hollmann@...tum.de>
Link: http://lkml.kernel.org/n/tip-5tyy9xeoiyg1nvy32tkjrlv1@git.kernel.org
Signed-off-by: Jiri Olsa <jolsa@...nel.org>
---
 tools/perf/builtin-script.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/tools/perf/builtin-script.c b/tools/perf/builtin-script.c
index 3770c3dffe5e..59009aa7e2ca 100644
--- a/tools/perf/builtin-script.c
+++ b/tools/perf/builtin-script.c
@@ -1961,6 +1961,7 @@ int cmd_script(int argc, const char **argv, const char *prefix __maybe_unused)
 			.exit		 = perf_event__process_exit,
 			.fork		 = perf_event__process_fork,
 			.attr		 = process_attr,
+			.event_update   = perf_event__process_event_update,
 			.tracing_data	 = perf_event__process_tracing_data,
 			.build_id	 = perf_event__process_build_id,
 			.id_index	 = perf_event__process_id_index,
-- 
2.4.11