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

Daniel Walker
2005-12-13T00:57:41Z

On Mon, 2005-12-12 at 23:45 +0000, David Howells wrote:

> (1) Provides a simple xchg() based semaphore as a default for all
> architectures that don't wish to override it and provide their own.
>
> Overriding is possible by setting CONFIG_ARCH_IMPLEMENTS_MUTEX and
> supplying asm/mutex.h
>
> Partial overriding is possible by #defining mutex_grab(), mutex_release()
> and is_mutex_locked() to perform the appropriate optimised functions.

Your code is really similar to the RT mutex, which does everything that
your mutex does at least ? Assuming you've reviewed the RT mutex, why
would we want to use yours over it?

Daniel