Commit abf0ea65 authored Dec 12, 2013 by Kirill Tkhai Committed by Max Filippov Jan 15, 2014

xtensa: Enable irqs after cpu is set online



there is a small possibility that wake_up of softirq thread
happens between local_irq_enable() and set_cpu_online(). In
this case affinity of the thread changes to fallback affinity
(i.e. CPU0). This may be a source of problems.

The patch kills that possibility.

Signed-off-by: Kirill Tkhai <tkhai@yandex.ru>
Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>

parent 306ab544

arch/xtensa/kernel/smp.c

+2 −1

Original line number	Diff line number	Diff line
		@@ -151,9 +151,10 @@ void secondary_start_kernel(void)
		secondary_init_irq();
		local_timer_setup(cpu);

		set_cpu_online(cpu, true);

		local_irq_enable();

		set_cpu_online(cpu, true);
		complete(&cpu_running);

		cpu_startup_entry(CPUHP_ONLINE);