From: Namhyung Kim <namhyung@kernel.org>
To: Jiri Olsa <jolsa@redhat.com>
Cc: Arnaldo Carvalho de Melo <acme@ghostprotocols.net>,
Peter Zijlstra <a.p.zijlstra@chello.nl>,
Paul Mackerras <paulus@samba.org>, Ingo Molnar <mingo@kernel.org>,
Namhyung Kim <namhyung.kim@lge.com>,
LKML <linux-kernel@vger.kernel.org>,
Steven Rostedt <rostedt@goodmis.org>,
Frederic Weisbecker <fweisbec@gmail.com>,
David Ahern <dsahern@gmail.com>,
Stephane Eranian <eranian@google.com>
Subject: Re: [PATCH 09/14] perf ftrace: Add 'record' sub-command
Date: Wed, 08 May 2013 14:27:40 +0900 [thread overview]
Message-ID: <8761yu82ib.fsf@sejong.aot.lge.com> (raw)
In-Reply-To: <20130506120411.GA6035@krava.brq.redhat.com> (Jiri Olsa's message of "Mon, 6 May 2013 14:04:11 +0200")
Hi Jiri,
On Mon, 6 May 2013 14:04:11 +0200, Jiri Olsa wrote:
> On Mon, May 06, 2013 at 10:44:56AM +0900, Namhyung Kim wrote:
>> Hi Jiri,
>>
>> Sorry for late reply. I've been busy these days.
>>
>> On Thu, 25 Apr 2013 15:24:18 +0900, Namhyung Kim wrote:
>> > But it looks there's a race between cond_wait() and cond_broatcast().
>> > I'll take a look at that.
>>
>> I think the problem is that a recorder can be blocked if it received a
>> broadcast signal before calling cond_wait(). So I modified the code to
>> place signaling ready_cond and waiting start_cond in the same cs.
>>
>> Does the patch below fix your problem?
>
> yes.. without the patch I get lockup in like 10 minutes
> with the patch the test is now ok for almost an hour..
Many thanks for your test!
Namhyung
next prev parent reply other threads:[~2013-05-08 5:27 UTC|newest]
Thread overview: 59+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-04-23 8:30 [RFC 00/14] perf tools: Introduce new 'ftrace' command Namhyung Kim
2013-04-23 8:30 ` [PATCH 01/14] perf util: Move debugfs/tracing helper functions to util.c Namhyung Kim
2013-04-24 12:32 ` Jiri Olsa
2013-04-23 8:31 ` [PATCH 02/14] perf util: Use evsel->name to get tracepoint_paths Namhyung Kim
2013-04-23 13:07 ` Steven Rostedt
2013-04-24 10:36 ` Namhyung Kim
2013-04-24 12:42 ` Jiri Olsa
2013-04-25 5:58 ` Namhyung Kim
2013-04-23 8:31 ` [PATCH 03/14] perf util: Save pid-cmdline mapping into tracing header Namhyung Kim
2013-04-23 8:31 ` [PATCH 04/14] perf util: Add more debug message on failure path Namhyung Kim
2013-04-23 8:31 ` [PATCH 05/14] perf tools: Introduce new 'ftrace' tool Namhyung Kim
2013-04-24 14:09 ` Jiri Olsa
2013-04-25 6:06 ` Namhyung Kim
2013-04-25 9:09 ` Jiri Olsa
2013-04-25 9:51 ` Namhyung Kim
2013-04-25 13:05 ` Steven Rostedt
2013-04-25 14:49 ` Jiri Olsa
2013-04-26 13:34 ` David Ahern
2013-04-26 13:50 ` Steven Rostedt
2013-04-23 8:31 ` [PATCH 06/14] perf ftrace: Add support for --pid option Namhyung Kim
2013-04-23 8:31 ` [PATCH 07/14] perf ftrace: Add support for -a and -C option Namhyung Kim
2013-04-23 8:31 ` [PATCH 08/14] perf ftrace: Split "live" sub-command Namhyung Kim
2013-04-23 8:31 ` [PATCH 09/14] perf ftrace: Add 'record' sub-command Namhyung Kim
2013-04-24 14:12 ` Jiri Olsa
2013-04-25 6:24 ` Namhyung Kim
2013-04-26 8:35 ` Jiri Olsa
2013-04-26 13:44 ` David Ahern
2013-05-06 1:57 ` Namhyung Kim
2013-05-06 3:22 ` David Ahern
2013-05-06 1:44 ` Namhyung Kim
2013-05-06 12:04 ` Jiri Olsa
2013-05-08 5:27 ` Namhyung Kim [this message]
2013-04-23 8:31 ` [PATCH 10/14] perf ftrace: Add 'show' sub-command Namhyung Kim
2013-04-23 8:31 ` [PATCH 11/14] perf ftrace: Add 'report' sub-command Namhyung Kim
2013-04-23 8:31 ` [PATCH 12/14] perf ftrace: Use pager for displaying result Namhyung Kim
2013-04-24 14:17 ` Jiri Olsa
2013-04-25 6:50 ` Namhyung Kim
2013-04-26 8:40 ` Jiri Olsa
2013-05-06 1:52 ` Namhyung Kim
2013-05-06 11:38 ` Jiri Olsa
2013-05-08 5:49 ` Namhyung Kim
2013-05-10 9:04 ` Jiri Olsa
2013-05-13 8:53 ` Namhyung Kim
2013-05-13 13:42 ` Jiri Olsa
2013-05-14 0:58 ` Namhyung Kim
2013-04-23 8:31 ` [PATCH 13/14] perf ftrace: Cleanup using ftrace_setup/teardown() Namhyung Kim
2013-04-23 8:31 ` [PATCH 14/14] perf tools: Add document for perf-ftrace command Namhyung Kim
2013-04-23 15:53 ` Steven Rostedt
2013-04-24 10:39 ` Namhyung Kim
2013-04-23 15:58 ` [RFC 00/14] perf tools: Introduce new 'ftrace' command Steven Rostedt
2013-04-23 17:19 ` Pekka Enberg
2013-04-24 6:50 ` Ingo Molnar
2013-04-24 9:52 ` Namhyung Kim
2013-04-24 11:15 ` zhangwei(Jovi)
2013-04-25 5:53 ` Namhyung Kim
2013-04-24 9:29 ` Namhyung Kim
2013-04-24 9:27 ` Namhyung Kim
2013-04-24 11:14 ` zhangwei(Jovi)
2013-04-25 5:45 ` Namhyung Kim
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