[RFC][PATCH 4/5] printk: Have wake_up_klogd() use __this_cpu_write()

Steven Rostedt
2011-09-19T21:26:47Z

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From: Steven Rostedt <srostedt@redhat.com>

The wake up code that triggers klogd does not really matter which
CPU it enables the wake up on. Every CPU will be doing a printk_tick()
and check the current CPU. As long as one of the CPUs triggers the
wakeup we are fine. Use __this_cpu_write() instead of this_cpu_write()
to show that we do not care.

Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
---
kernel/printk.c | 2 +-
1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/kernel/printk.c b/kernel/printk.c
index 28a40d8..e221fec 100644
--- a/kernel/printk.c
+++ b/kernel/printk.c
@@ -1225,7 +1225,7 @@ int printk_needs_cpu(int cpu)
void wake_up_klogd(void)
{
if (waitqueue_active(&log_wait))
- this_cpu_write(printk_pending, 1);
+ __this_cpu_write(printk_pending, 1);
}

/**
--
1.7.5.4