Re: [PATCH 1/19] MUTEX: Introduce simple mutex implementation

From: David Howells
Date: Wed Dec 14 2005 - 07:35:27 EST


Alan Cox <alan@xxxxxxxxxxxxxxxxxxx> wrote:

> Why bother. As has already been discussed up and down are the natural
> and normal names for counting semaphores. You don't need to obsolete the
> old API thats just silly, you need to add a new one and wait for people
> to use it.

The vast majority of ups and downs are actually mutex related not semaphore
related, so by majority share, up/down perhaps ought to be repurposed to
mutexes: they _are_ the preeminent uses.

>From my modified tree, I see:

semaphore up down down_in down_try
Counting 41 59 1 0
Mutex 4405 2824 362 107

> The old API is still very useful for some applications that want
> counting semaphores.

Whilst that is true, they're in a small minority, and it'd be easier to change
them.

David
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/