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

Ingo Molnar
2005-12-13T10:54:59Z

* David Howells <dhowells@redhat.com> wrote:

> init_MUTEX_LOCKED()
> DECLARE_MUTEX_LOCKED()

please kill these two in the simple mutex implementation - they are a
sign of mutexes used as completions.

> (7) Provides a debugging config option CONFIG_DEBUG_MUTEX_OWNER by which the
> mutex owner can be tracked and by which over-upping can be detected.

another simplification: also enforce that only the owner can unlock the
mutex. This is what we are doing in the -rt patch. (This rule also
ensures that such mutexes can be used for priority inheritance.)

Ingo