From: Michael Ellerman <mpe@ellerman•id.au>
To: Denis Kirjanov <kda@linux-powerpc•org>
Cc: linuxppc-dev@lists•ozlabs.org, ego@linux•vnet.ibm.com
Subject: Re: [PATCH v2] ppc: cpufreq: disable preemption while checking CPU throttling state
Date: Tue, 08 Nov 2016 11:21:23 +1100 [thread overview]
Message-ID: <87k2celt30.fsf@concordia.ellerman.id.au> (raw)
In-Reply-To: <CAOJe8K1Cb_UH+yRb8_hYB3T9i8EqteS_nTgWWNcA-EtZvm-wNg@mail.gmail.com>
Denis Kirjanov <kda@linux-powerpc•org> writes:
> On 11/7/16, Michael Ellerman <mpe@ellerman•id.au> wrote:
>> Denis Kirjanov <kda@linux-powerpc•org> writes:
>>> [ 67.700897] BUG: using smp_processor_id() in preemptible [00000000] code: cat/7343
>>> [ 67.700988] caller is .powernv_cpufreq_throttle_check+0x2c/0x710
>>
>> When did this break?
>
> I think that problem exists since commit
> 09a972d1620934142d30cfda455ffe429af751c4 ("cpufreq: powernv: Report
> cpu frequency throttling") but I can be wrong
Yep that looks right to me, thanks.
Gautham, how bad is the bug here, do we want to send this to stable?
cheers
next prev parent reply other threads:[~2016-11-08 0:21 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-11-04 11:08 [PATCH v2] ppc: cpufreq: disable preemption while checking CPU throttling state Denis Kirjanov
2016-11-07 2:31 ` Gautham R Shenoy
2016-11-07 5:15 ` Denis Kirjanov
2016-11-07 7:36 ` Michael Ellerman
2016-11-07 8:02 ` Denis Kirjanov
2016-11-08 0:21 ` Michael Ellerman [this message]
2016-11-08 3:17 ` Gautham R Shenoy
2016-11-08 8:27 ` Michael Ellerman
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=87k2celt30.fsf@concordia.ellerman.id.au \
--to=mpe@ellerman$(echo .)id.au \
--cc=ego@linux$(echo .)vnet.ibm.com \
--cc=kda@linux-powerpc$(echo .)org \
--cc=linuxppc-dev@lists$(echo .)ozlabs.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox