linux-kernel - Re: [PATCH 0/4] workqueue_trace: Add max execution time mesurement for per worklet

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Message-ID: <20090428215335.GF7337@nowhere>
Date:	Tue, 28 Apr 2009 23:53:36 +0200
From:	Frederic Weisbecker <fweisbec@...il.com>
To:	Zhaolei <zhaolei@...fujitsu.com>
Cc:	Steven Rostedt <rostedt@...dmis.org>, Ingo Molnar <mingo@...e.hu>,
	Tom Zanussi <tzanussi@...il.com>,
	KOSAKI Motohiro <kosaki.motohiro@...fujitsu.com>,
	Oleg Nesterov <oleg@...hat.com>,
	LKML <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH 0/4] workqueue_trace: Add max execution time mesurement
	for per worklet

On Tue, Apr 28, 2009 at 06:51:33PM +0800, Zhaolei wrote:
> Hi,
> 
> This patch add max execution time mesurement for per worklet.
> It is useful for driver-developer and system administrator to
> know which worklet runs how many time.
> 
> It need applied on top of patchset of:
> workqueue_tracepoint: Add worklet tracepoints for worklet lifecycle tracing
> 
> Output is like:
>  # CPU INSERTED EXECUTED M_EXECus TASKNAME:PID
>  #  |     |        |        |      `-WORKFUNC
>  #  |     |        |        |        |
>      0      905      973          events/0:5
>      0        1        1       37  |-reg_todo+0x0/0x41f
>      0       13       12     2033  |-rt_worker_func+0x0/0x219
>      0       49       48     3157  |-mce_work_fn+0x0/0x31
>      0       14       13      939  |-check_corruption+0x0/0x2a
>      0      707      706     3826  |-vmstat_update+0x0/0x33
>      0        1        1     1846  |-power_supply_changed_work+0x0/0x3c
>      0       11       11     2879  |-console_callback+0x0/0xe1
>      0       30       29     1579  |-do_cache_clean+0x0/0x37
>      0       74       74     2841  |-test_work+0x0/0x53
>      0        3        2      252  |-rekey_seq_generator+0x0/0x5a
>      0        1        1       21  |-grace_ender+0x0/0x14
>      0        1        1     3701  `-flush_to_ldisc+0x0/0x15d
>      0        0        0          cpuset:6
>      0      658      658          khelper:7
>      0      658      658     5735  `-__call_usermodehelper+0x0/0x77
>      0        0        0          netns:11
>  ...
> 
> Thanks
> Zhaolei
> 

Thanks Zhaolei,

I've applied this series and the previous one to
git://git.kernel.org/pub/scm/linux/kernel/git/frederic/random-tracing.git
 tracing/workqueue

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