Commit-ID: f0a07aeaf8935b7e9ef8032ce6546169f143951c
Gitweb: http://git.kernel.org/tip/f0a07aeaf8935b7e9ef8032ce6546169f143951c
Author: Paul E. McKenney <paul.mckenney@xxxxxxxxxx>
AuthorDate: Wed, 23 Feb 2011 11:10:52 -0800
Committer: Paul E. McKenney <paulmck@xxxxxxxxxxxxxxxxxx>
CommitDate: Thu, 5 May 2011 23:16:57 -0700
rcu: Switch to this_cpu() primitives
This removes a couple of lines from invoke_rcu_cpu_kthread(), improving
readability.
Reported-by: Christoph Lameter <cl@xxxxxxxxx>
Signed-off-by: Paul E. McKenney <paul.mckenney@xxxxxxxxxx>
Signed-off-by: Paul E. McKenney <paulmck@xxxxxxxxxxxxxxxxxx>
Reviewed-by: Josh Triplett <josh@xxxxxxxxxxxxxxxx>
---
kernel/rcutree.c | 10 +++-------
1 files changed, 3 insertions(+), 7 deletions(-)
diff --git a/kernel/rcutree.c b/kernel/rcutree.c
index 575d641..27304bc 100644
--- a/kernel/rcutree.c
+++ b/kernel/rcutree.c
@@ -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);
}
--
To unsubscribe from this list: send the line "unsubscribe linux-tip-commits" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
|