linux-kernel - Re: LatencyTOP infrastructure patch

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: Windows password security audit tool. GUI, reports in PDF.

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

Date:	Mon, 21 Jan 2008 17:06:53 +0900
From:	KOSAKI Motohiro <kosaki.motohiro@...fujitsu.com>
To:	Arjan van de Ven <arjan@...ux.intel.com>
Cc:	kosaki.motohiro@...fujitsu.com,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	Linus Torvalds <torvalds@...ux-foundation.org>,
	Ingo Molnar <mingo@...e.hu>,
	Andrew Morton <akpm@...ux-foundation.org>
Subject: Re: LatencyTOP infrastructure patch

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

--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/