Re: [linux-pm] [PATCH 0/8] Suspend block api (version 6)

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



On Fri, May 14, 2010 at 7:35 PM, Alan Stern <stern@xxxxxxxxxxxxxxxxxxx> wrote:
> On Fri, 14 May 2010, Rafael J. Wysocki wrote:
>
>> > > How do you handle situations where the CPU is currently idle but an
>> > > event (such as I/O completion) is expected to occur in the near future?
>> > > You don't want to power-off and reboot then, do you?
>> >
>> > The idle code looks at next_timer_interrupt() value, then if the
>> > next timer event if far enough ahead, the system powers down and
>> > wakes to the timer interrupt. It also wakes to device interrupts.
>>
>> For the record, waking to interrupts doesn't work on quite some systems
>> (like ACPI-based PCs for one example).
>
> Ironically, it appears that ACPI-based PCs are in a position to benefit
> more from opportunistic suspend and suspend blockers than are embedded
> systems -- and yet they are being proposed for use on cell phones
> rather than on desktops.
>

I would also use it on a desktop.

-- 
Arve Hjønnevåg
--
To unsubscribe from this list: send the line "unsubscribe linux-omap" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html

[Index of Archives]     [Linux Arm (vger)]     [ARM Kernel]     [ARM MSM]     [Linux Tegra]     [Linux WPAN Networking]     [Linux Wireless Networking]     [Maemo Users]     [Linux USB Devel]     [Video for Linux]     [Linux Audio Users]     [Yosemite Trails]     [Linux Kernel]     [Linux SCSI]

  Powered by Linux