linux-kernel - Re: oprofile: WQ on CPU0, prefer CPU1

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] [day] [month] [year] [list]

Message-ID: <20090517150318.13801o5efb1taoeu@mail.your-server.de>
Date:	Sun, 17 May 2009 15:03:18 +0200
From:	Thomas Meyer <thomas@...3r.de>
To:	Andrew Morton <akpm@...ux-foundation.org>
Cc:	linux-kernel@...r.kernel.org, oprofile-list@...ts.sf.net,
	Robert Richter <robert.richter@....com>
Subject: Re: oprofile: WQ on CPU0, prefer CPU1


Zitat von Andrew Morton <akpm@...ux-foundation.org>:

> (cc's added, from MAINTAINERS)
>
> On Thu, 14 May 2009 20:22:14 +0200 Thomas Meyer <thomas@...3r.de> wrote:
>
>>
>> After suspend and resume to/from S3 I see a lot of these messages in
>> the kernel log:
>>
>> [11750.054031] WQ on CPU0, prefer CPU1
>> [11750.154023] WQ on CPU0, prefer CPU1
>> [11750.254022] WQ on CPU0, prefer CPU1
>> [11750.354022] WQ on CPU0, prefer CPU1
>> [11750.454018] WQ on CPU0, prefer CPU1
>> [11750.554022] WQ on CPU0, prefer CPU1
>> [11750.654022] WQ on CPU0, prefer CPU1
>> [11750.754039] WQ on CPU0, prefer CPU1
>> [11750.854020] WQ on CPU0, prefer CPU1
>> [11750.954024] WQ on CPU0, prefer CPU1
>> [11751.054029] WQ on CPU0, prefer CPU1
>> [11751.154028] WQ on CPU0, prefer CPU1
>> [11751.254026] WQ on CPU0, prefer CPU1
>> [11751.354019] WQ on CPU0, prefer CPU1
>> [11751.454022] WQ on CPU0, prefer CPU1
>> [11751.554032] WQ on CPU0, prefer CPU1
>> [11751.654028] WQ on CPU0, prefer CPU1
>> [11751.754028] WQ on CPU0, prefer CPU1
>> [11751.854033] WQ on CPU0, prefer CPU1
>> [11751.954029] WQ on CPU0, prefer CPU1
>> [and so on; seems not to stop]
>>
>> This comes from drivers/oprofile/cpu_buffer.c
>>
>> Bug or feature?
>>
>
> Don't know.  It needs fixing though - the kernel shouldn't blurt random
> printks like this.
>
>>
>> PS: 2.6.30-rc5
>
> Do you know if earlier kernels did the same thing?

I don't know.


--
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/