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().
Signed-off-by: Yasuaki Ishimatsu <isimatu.yasu...@jp.fujitsu.com>
---
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);
--
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