tree 19c0b0cf314d4394ca580c05b86cdf874ce0a167
parent e48b3deee475134585eed03e7afebe4bf9e0dba9
author Matthew Wilcox <matthew@wil.cx> 1204944958 -0500
committer Matthew Wilcox <willy@linux.intel.com> 1208443354 -0400

Generic semaphore implementation

Semaphores are no longer performance-critical, so a generic C
implementation is better for maintainability, debuggability and
extensibility.  Thanks to Peter Zijlstra for fixing the lockdep
warning.  Thanks to Harvey Harrison for pointing out that the
unlikely() was unnecessary.

Signed-off-by: Matthew Wilcox <willy@linux.intel.com>
Acked-by: Ingo Molnar <mingo@elte.hu>