On Sat, Aug 25, 2012 at 08:00:56AM +0800, Bill Huang wrote:

quoted

nvpublic

quoted

So what you're asking for is a feature to do what
CONFIG_PM_SLEEP_SMP does, but without CONFIG_PM_SLEEP_SMP enabled?

Yeah pretty much, I'm actually asking should we take care of this
since maybe not all platforms will have this config enabled?

quoted

Why not just ensure that CONFIG_PM_SLEEP_SMP is enabled if your
platform requires that the lowest CPU number be the CPU dealing with reboot?

Someday we will have it enabled, but before that we'll hit the issue,
so you don't think this should be taken care of? Thanks.

Well, just enable CONFIG_PM_SLEEP_SMP then - it'll be far better than trying to implement something in
the ARM code, especially as sysrq can be used for poweroff/reboot etc (which will run from atomic
contexts where you can't switch to another CPU.)

What you're asking for will make these callbacks fragile for other platforms.

OK, thanks.