On Mon, 02 Feb 2009 09:46:57 +0800 "alex.shi" <alex.shi@xxxxxxxxx> wrote: > Yagui want to give a clear explanation to be used for commitment. So I resend > this again. > > On most boxes the ACPI PM timer is 24-bit counter that runs on 3.579545MHz > clock. In such case the max C-state sleep time should be less than 4687ms when > it is used to record C2/C3 duration time. > But on some boxes the max C-state sleep time is more than 4687ms. In such > case the overflow happens and the C-state duration time can't be counted > accurately. > > Use clocksource to get the C-state time instead of ACPI PM timer. and use > div64_u64 to convert US_TO_PM_TIME_TICKS in i386 mode. It seems that this bugfix was not applied, a cleanup patch was merged instead and this patch is now wrecked. I'll need to drop it, sorry. -- To unsubscribe from this list: send the line "unsubscribe linux-acpi" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
