Re: [patch 1/3] spinlock fix #1, *_can_lock() primitives

From: Linus Torvalds
Date: Thu Jan 20 2005 - 12:54:11 EST




On Thu, 20 Jan 2005, Ingo Molnar wrote:
>
> You are right about UP, and the patch below adds the UP variants. It's
> analogous to the existing wrapping concept that UP 'spinlocks' are
> always unlocked on UP. (spin_can_lock() is already properly defined on
> UP too.)

Looking closer, it _looks_ like the spinlock debug case never had a
"spin_is_locked()" define at all. Or am I blind? Maybe UP doesn't
want/need it after all?

Linus
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