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SubjectRe: [GIT PULL] printk: Support for full dynticks mode
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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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