On Tue, 19 Nov 2019, Qais Yousef wrote: > On 11/19/19 23:59, Thomas Gleixner wrote: > > On Tue, 19 Nov 2019, Qais Yousef wrote: > > > My plan was to simply make freeze_secondary_cpus() available and protected by > > > CONFIG_SMP only instead. > > > > > > Good plan? > > > > No. freeze_secondary_cpus() is really for hibernation. Look at the exit > > conditions there. > > Hmm do you mean the pm_wakeup_pending() abort? > > In arm64 we machine_shutdown() calls disable_nonboot_cpus(), which in turn > a wrapper around freeze_secondary_cpus() with 0 passed as an argument. > > IIUC this means arm64 could fail to offline all CPUs on machine_shutdown(), > correct? Looks like. Thanks, tglx
|