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Message-Id: <1203901826.4954.11.camel@yangyi-dev.bj.intel.com> Date: Mon, 25 Feb 2008 09:10:26 +0800 From: Yi Yang <yi.y.yang@...el.com> To: Ingo Molnar <mingo@...e.hu> Cc: akpm@...ux-foundation.org, venkatesh.pallipadi@...el.com, cpufreq@...ts.linux.org.uk, linux-pm@...ts.linux-foundation.org, linux-kernel@...r.kernel.org, linux-acpi@...r.kernel.org Subject: Re: [PATCH 2.6.25-rc3] cpuidle: fix cpuidle time and usage overflow On Mon, 2008-02-25 at 11:15 +0100, Ingo Molnar wrote: > * Yi Yang <yi.y.yang@...el.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? They are just stats info in sysfs, cpuidle's behaviors don't depend on them. I didn't notice any regression or misbehaviors. > > Ingo > - > To unsubscribe from this list: send the line "unsubscribe linux-acpi" in > the body of a message to majordomo@...r.kernel.org > More majordomo info at http://vger.kernel.org/majordomo-info.html -- 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/
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