From: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>
To: Arjan van de Ven <arjan@linux.intel.com>
Cc: kosaki.motohiro@jp.fujitsu.com,
Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
Linus Torvalds <torvalds@linux-foundation.org>,
Ingo Molnar <mingo@elte.hu>,
Andrew Morton <akpm@linux-foundation.org>
Subject: Re: LatencyTOP infrastructure patch
Date: Mon, 21 Jan 2008 17:06:53 +0900 [thread overview]
Message-ID: <20080121170415.125B.KOSAKI.MOTOHIRO@jp.fujitsu.com> (raw)
In-Reply-To: <20080118093943.0048d0f7@laptopd505.fenrus.org>
Hi
> +static void __sched
> +account_global_scheduler_latency(struct task_struct *tsk, int usecs)
> +{
> + int i;
> + int firstnonnull = MAXLR + 1;
> +
> + if (!tsk->latency_reason.reason)
> + return;
> +
> + /* skip kernel threads for now */
> + if (!tsk->mm)
> + return;
Why do you ignore kernel thread?
may be, some network filesystem use kernel thread for local I/O.
What do you think it?
- kosaki
next prev parent reply other threads:[~2008-01-21 8:07 UTC|newest]
Thread overview: 27+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-01-18 17:36 [Announce] Development release 0.1 of the LatencyTOP tool Arjan van de Ven
2008-01-18 17:39 ` [patch 1/3] LatencyTOP infrastructure patch Arjan van de Ven
2008-01-20 11:34 ` Helge Deller
2008-01-20 16:47 ` Dmitry Adamushko
2008-01-20 17:18 ` Dmitry Adamushko
2008-01-21 8:06 ` KOSAKI Motohiro [this message]
2008-01-21 16:16 ` Arjan van de Ven
2008-01-18 17:40 ` [patch 2/3] Latencytop instrumentations part 1 Arjan van de Ven
2008-01-18 22:26 ` Frank Ch. Eigler
2008-01-18 22:33 ` Arjan van de Ven
2008-01-18 22:47 ` Arnaldo Carvalho de Melo
2008-01-18 23:11 ` Frank Ch. Eigler
2008-01-18 23:20 ` Arjan van de Ven
2008-01-18 17:42 ` [patch 3/3] LatencyTOP instrumentations part 2 Arjan van de Ven
2008-01-18 18:27 ` [Announce] Development release 0.1 of the LatencyTOP tool Roberto Fichera
2008-01-18 18:35 ` Arjan van de Ven
2008-01-18 18:46 ` Roberto Fichera
2008-01-18 19:02 ` Zan Lynx
2008-01-19 5:07 ` Andi Kleen
2008-01-19 5:16 ` Arjan van de Ven
2008-01-19 5:27 ` Andi Kleen
2008-01-19 5:25 ` Arjan van de Ven
2008-01-19 5:33 ` Andi Kleen
2008-01-19 5:34 ` Arjan van de Ven
2008-01-19 6:08 ` Andi Kleen
2008-01-19 5:37 ` [Announce] Development release 0.1 of the LatencyTOP tool II Andi Kleen
2008-01-21 0:52 ` Development release 0.1 of the LatencyTOP tool KOSAKI Motohiro
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