linux-kernel - Re: [PATCH] softlockup: remove timestamp checking from hung

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]

Message-ID: <20090209100452.GD20467@elte.hu>
Date:	Mon, 9 Feb 2009 11:04:52 +0100
From:	Ingo Molnar <mingo@...e.hu>
To:	Mandeep Singh Baines <msb@...gle.com>
Cc:	fweisbec@...il.com, linux-kernel@...r.kernel.org,
	rientjes@...gle.com, mbligh@...gle.com, thockin@...gle.com,
	akpm@...ux-foundation.org
Subject: Re: [PATCH] softlockup: remove timestamp checking from hung_task


* Mandeep Singh Baines <msb@...gle.com> wrote:

> Patch against tip/core/softlockup
> 
> ---
> Impact: saves sizeof(long) bytes per task_struct
> 
> By guaranteeing that sysctl_hung_task_timeout_secs have elapsed between
> tasklist scans we can avoid using timestamps.
> 
> Signed-off-by: Mandeep Singh Baines <msb@...gle.com>
> ---
>  include/linux/sched.h |    1 -
>  kernel/fork.c         |    8 +++-----
>  kernel/hung_task.c    |   48 +++++++++---------------------------------------
>  3 files changed, 12 insertions(+), 45 deletions(-)

Nice simplification!

Applied to tip/core/softlockup, thanks Mandeep.

(i fixed the one scripts/checkpatch.pl error that your patch triggered)

	Ingo
--
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/