Messages in this thread | | | Date | Sat, 25 Aug 2012 08:52:21 +0100 | From | Russell King - ARM Linux <> | Subject | Re: Shutdown problem in SMP system happened on Tegra20 |
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On Sat, Aug 25, 2012 at 03:36:27PM +0800, Shawn Guo wrote: > On Fri, Aug 24, 2012 at 07:21:33PM +0100, Russell King - ARM Linux wrote: > > 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? > > I have CONFIG_PM_SLEEP_SMP enabled for imx6q, but still see the imx6q > restart hook running on cpu1 than cpu0. It seems that > disable_nonboot_cpus is only called in kernel_power_off but never > kernel_restart. We should probably patch kernel_restart or > machine_restart to have disable_nonboot_cpus called?
Remember that this path gets called from IRQ context which makes calling functions which sleep very dodgy.
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