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authorEric Paris <eparis@redhat.com>2009-03-23 18:22:09 +0100
committerIngo Molnar <mingo@elte.hu>2009-04-29 16:45:54 +0200
commitb1fca26631f76a5e8b18435a43f5d82b8734da4b (patch)
tree6b8e651239219e85a6b3b9238878c4a6eb4f2d9c /kernel/rtmutex.c
parent56a50adda49b2020156616c4eb15353e0f9ad7de (diff)
mutex: add atomic_dec_and_mutex_lock()
Much like the atomic_dec_and_lock() function in which we take an hold a spin_lock if we drop the atomic to 0 this function takes and holds the mutex if we dec the atomic to 0. Signed-off-by: Eric Paris <eparis@redhat.com> Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Paul Mackerras <paulus@samba.org> Orig-LKML-Reference: <20090323172417.410913479@chello.nl> Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'kernel/rtmutex.c')
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