On Thursday, July 31, 2014 05:20:26 PM Lan Tianyu wrote: > The callback of CPU_STARTING event can't sleep and so acpi_cpu_soft_notify() > return directly when CPU_STARTING event is triggered. But cpu hotplug also > happens during S2RAM. The action will become CPU_STARTING_FROZEN. This > patch is to fix missing check the frozen event. > > Signed-off-by: Lan Tianyu <tianyu....@intel.com>
There is work to restructure the handling of CPU_TASKS_FROZEN under way and Chen Gong is driving it. That's likely to conflict with the last two patches from you. Can you pleaes coordinate with Gong? Rafael > --- > drivers/acpi/processor_driver.c | 2 +- > 1 file changed, 1 insertion(+), 1 deletion(-) > > diff --git a/drivers/acpi/processor_driver.c b/drivers/acpi/processor_driver.c > index 4fcbd67..66e2249 100644 > --- a/drivers/acpi/processor_driver.c > +++ b/drivers/acpi/processor_driver.c > @@ -125,7 +125,7 @@ static int acpi_cpu_soft_notify(struct notifier_block > *nfb, > * CPU_STARTING and CPU_DYING must not sleep. Return here since > * acpi_bus_get_device() may sleep. > */ > - if (action == CPU_STARTING || action == CPU_DYING) > + if ((action & ~CPU_TASKS_FROZEN) == CPU_STARTING || action == CPU_DYING) > return NOTIFY_DONE; > > if (!pr || acpi_bus_get_device(pr->handle, &device)) > -- I speak only for myself. Rafael J. Wysocki, Intel Open Source Technology Center. -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
