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Commit f0a07aea authored by Paul E. McKenney's avatar Paul E. McKenney Committed by Paul E. McKenney
Browse files

rcu: Switch to this_cpu() primitives 



This removes a couple of lines from invoke_rcu_cpu_kthread(), improving
readability.

Reported-by: default avatarChristoph Lameter <cl@linux.com>
Signed-off-by: default avatarPaul E. McKenney <paul.mckenney@linaro.org>
Signed-off-by: default avatarPaul E. McKenney <paulmck@linux.vnet.ibm.com>
Reviewed-by: default avatarJosh Triplett <josh@joshtriplett.org>
parent 108aae22

kernel/rcutree.c

+3 −7
Original line number Diff line number Diff line
@@ -1480,18 +1480,14 @@ static void rcu_process_callbacks(void) 
static void invoke_rcu_cpu_kthread(void)

{

	unsigned long flags;

	wait_queue_head_t *q;

	int cpu;



	local_irq_save(flags);

	cpu = smp_processor_id();

	per_cpu(rcu_cpu_has_work, cpu) = 1;

	if (per_cpu(rcu_cpu_kthread_task, cpu) == NULL) {

	__this_cpu_write(rcu_cpu_has_work, 1);

	if (__this_cpu_read(rcu_cpu_kthread_task) == NULL) {

		local_irq_restore(flags);

		return;

	}

	q = &per_cpu(rcu_cpu_wq, cpu);

	wake_up(q);

	wake_up(&__get_cpu_var(rcu_cpu_wq));

	local_irq_restore(flags);

}