ARM: CPU hotplug: ensure correct ordering of unplug
Don't call idle_task_exit() with interrupts disabled, and ensure that we have a memory barrier after interrupts are disabled but before signalling that this CPU has shut down. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
This commit is contained in:
parent
bbc81fd432
commit
f36d340122
|
@ -269,9 +269,11 @@ void __ref cpu_die(void)
|
|||
{
|
||||
unsigned int cpu = smp_processor_id();
|
||||
|
||||
local_irq_disable();
|
||||
idle_task_exit();
|
||||
|
||||
local_irq_disable();
|
||||
mb();
|
||||
|
||||
/* Tell __cpu_die() that this CPU is now safe to dispose of */
|
||||
complete(&cpu_died);
|
||||
|
||||
|
|
Loading…
Reference in New Issue