From: santosh.shilimkar@ti.com (Santosh Shilimkar)
To: linux-arm-kernel@lists.infradead.org
Subject: About CPU hotplug stress test failed
Date: Wed, 02 May 2012 13:02:47 +0530 [thread overview]
Message-ID: <4FA0E31F.8090304@ti.com> (raw)
In-Reply-To: <CAB4PhKf06wNA_=QEe3uT9u25WaxVHAenWADCA49hUwJxcPGdwA@mail.gmail.com>
On Wednesday 02 May 2012 12:46 PM, Jason Liu wrote:
> Hi, kernel experts
>
> We met CPU hotplug issue on v3.0.15 and event the latest v3.4,
> sometimes system hang when doing stress test of CPU hotplug which is
> simply to remove all secondary cores(core1 ~ core3) and add them back,
> the failure is in random. But we didn?t meet any issue on V2.6.38, so
> I guess it is pure kernel issue, do you have any idea about it? Or did
> you meet any similar issue on other platform(OMAP, SAMSUNG or Tegra)?
> Thanks in advanced!
>
>
I haven't observed yet such issue on OMAP with 3.4 but there were issues
seen before the cpu_active fixes. You can look at commit "5fbd036b" for more
information.
In your report, you haven't mentioned much. What you mean by system
hang. What is the state of CPU's at the time of hang ? Are you getting
some CPU stalled kind of messages ? You can enable the debug support so
that kernel will panic if CPUs are stalled.
Regards
Santosh
prev parent reply other threads:[~2012-05-02 7:32 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-05-02 7:16 About CPU hotplug stress test failed Jason Liu
2012-05-02 7:32 ` Santosh Shilimkar [this message]
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=4FA0E31F.8090304@ti.com \
--to=santosh.shilimkar@ti.com \
--cc=linux-arm-kernel@lists.infradead.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.