(2013/08/09 11:43), Gu Zheng wrote: > Hi Ishimatsu-san, > On 08/06/2013 06:11 PM, Yasuaki Ishimatsu wrote: > >> try_offline_node() checks that all cpus related with removed node have been >> removed by using cpu_present_bits. If all cpus related with removed node have >> been removed, try_offline_node() clears the node information. >> >> But try_offline_node() called from acpi_processor_remove() never clears >> the node information. For disabling cpu_present_bits, acpi_unmap_lsapic() >> need be called. But acpi_unmap_lsapic() is called after try_offline_node() >> runs. So when try_offline_node() runs, the cpu's cpu_present_bits is always >> set. >> >> This patch moves try_offline_node() after acpi_unmap_lsapic(). > > It works well. > >> >> Signed-off-by: Yasuaki Ishimatsu <isimatu.yasuaki@xxxxxxxxxxxxxx> > > > Tested-by: Gu Zheng <guz.fnst@xxxxxxxxxxxxxx> Thank you for testing. Thanks, Yasuaki Ishimatsu > > Thanks, > Gu > >> --- >> drivers/acpi/acpi_processor.c | 3 ++- >> 1 files changed, 2 insertions(+), 1 deletions(-) >> >> diff --git a/drivers/acpi/acpi_processor.c b/drivers/acpi/acpi_processor.c >> index fd6c51c..5a74a9c 100644 >> --- a/drivers/acpi/acpi_processor.c >> +++ b/drivers/acpi/acpi_processor.c >> @@ -451,7 +451,6 @@ static void acpi_processor_remove(struct acpi_device *device) >> /* Clean up. */ >> per_cpu(processor_device_array, pr->id) = NULL; >> per_cpu(processors, pr->id) = NULL; >> - try_offline_node(cpu_to_node(pr->id)); >> >> /* Remove the CPU. */ >> get_online_cpus(); >> @@ -459,6 +458,8 @@ static void acpi_processor_remove(struct acpi_device *device) >> acpi_unmap_lsapic(pr->id); >> put_online_cpus(); >> >> + try_offline_node(cpu_to_node(pr->id)); >> + >> out: >> free_cpumask_var(pr->throttling.shared_cpu_map); >> kfree(pr); >> >> -- >> To unsubscribe from this list: send the line "unsubscribe linux-kernel" in >> the body of a message to majordomo@xxxxxxxxxxxxxxx >> More majordomo info at http://vger.kernel.org/majordomo-info.html >> Please read the FAQ at http://www.tux.org/lkml/ >> > > -- To unsubscribe from this list: send the line "unsubscribe linux-acpi" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
