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| author | Paul E. McKenney <paul.mckenney@linaro.org> | 2011-02-23 11:10:52 -0800 |
|---|---|---|
| committer | Paul E. McKenney <paulmck@linux.vnet.ibm.com> | 2011-05-05 23:16:57 -0700 |
| commit | f0a07aeaf8935b7e9ef8032ce6546169f143951c (patch) | |
| tree | 31c6ee98ebb7e3040ad036415702eb23ff929e01 /kernel/rcutree.c | |
| parent | 108aae22339f445c134aeb48eca25df1014ab08d (diff) | |
| download | linux-f0a07aeaf8935b7e9ef8032ce6546169f143951c.tar.bz2 | |
rcu: Switch to this_cpu() primitives
This removes a couple of lines from invoke_rcu_cpu_kthread(), improving
readability.
Reported-by: Christoph Lameter <cl@linux.com>
Signed-off-by: Paul E. McKenney <paul.mckenney@linaro.org>
Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Reviewed-by: Josh Triplett <josh@joshtriplett.org>
Diffstat (limited to 'kernel/rcutree.c')
| -rw-r--r-- | kernel/rcutree.c | 10 |
1 files changed, 3 insertions, 7 deletions
diff --git a/kernel/rcutree.c b/kernel/rcutree.c index 575d6414763e..27304bc15eca 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); } |