Re: [GIT PULL] printk: Support for full dynticks mode
From: Steven Rostedt
Date: Mon Feb 04 2013 - 22:29:44 EST
On Mon, 2013-02-04 at 22:24 -0500, Steven Rostedt wrote:
> The reason to avoid the wake up of klogd() is that it also grabs the
> wait queue spinlock every time it's called. up() is fast when there's no
> waiters, but wake_up_interruptible() is not so fast.
I take that back. Seems up() takes the sem->lock every time too :-p
But it's just a matter of slowing things down. I don't see it causing
any deadlocks.
-- Steve
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