From: Ingo Molnar <mingo@elte.hu>
To: Yi Yang <yi.y.yang@intel.com>
Cc: akpm@linux-foundation.org, venkatesh.pallipadi@intel.com,
cpufreq@lists.linux.org.uk, linux-pm@lists.linux-foundation.org,
linux-kernel@vger.kernel.org, linux-acpi@vger.kernel.org
Subject: Re: [PATCH 2.6.25-rc3] cpuidle: fix cpuidle time and usage overflow
Date: Mon, 25 Feb 2008 11:15:33 +0100 [thread overview]
Message-ID: <20080225101533.GB30685@elte.hu> (raw)
In-Reply-To: <1203900372.4954.8.camel@yangyi-dev.bj.intel.com>
* Yi Yang <yi.y.yang@intel.com> wrote:
> cpuidle C-state sysfs node time and usage are very easy to overflow
> because they are all of unsigned int type, time will overflow within
> about two hours, usage will take longer time to overflow, but they are
> increasing for ever.
>
> This patch will convert them to unsigned long long.
what happens if such an overflow happens - any particular regression or
other misbehavior, or just funny looking stats in sysfs?
Ingo
next prev parent reply other threads:[~2008-02-25 10:16 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <1199441414.19185.9.camel@yangyi-dev.bj.intel.com>
[not found] ` <1201043126.3861.5.camel@yangyi-dev.bj.intel.com>
2008-02-14 23:44 ` [PATCH 2.6.25-rc1] cpufreq: fix cpufreq policy refcount imbalance Yi Yang
2008-02-14 23:48 ` Yi Yang
2008-02-15 15:52 ` [linux-pm] " Alan Stern
2008-02-15 18:24 ` Greg KH
2008-02-15 21:01 ` Greg KH
2008-02-25 0:46 ` [PATCH 2.6.25-rc3] cpuidle: fix cpuidle time and usage overflow Yi Yang
2008-02-25 10:15 ` Ingo Molnar [this message]
2008-02-25 1:10 ` Yi Yang
2008-03-26 4:46 ` Len Brown
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=20080225101533.GB30685@elte.hu \
--to=mingo@elte.hu \
--cc=akpm@linux-foundation.org \
--cc=cpufreq@lists.linux.org.uk \
--cc=linux-acpi@vger.kernel.org \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-pm@lists.linux-foundation.org \
--cc=venkatesh.pallipadi@intel.com \
--cc=yi.y.yang@intel.com \
/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 a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox