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| author | Pierre Peiffer <pierre.peiffer@bull.net> | 2007-05-09 09:35:02 (GMT) |
|---|---|---|
| committer | Linus Torvalds <torvalds@woody.linux-foundation.org> | 2007-05-09 19:30:55 (GMT) |
| commit | d0aa7a70bf03b9de9e995ab272293be1f7937822 (patch) | |
| tree | 194b30b7b8374b946f166996cb99fb95eb3b7819 /fs/xfs/xfs_dir2_block.c | |
| parent | c19384b5b296905d4988c7c684ff540a0f9d65be (diff) | |
| download | linux-fsl-qoriq-d0aa7a70bf03b9de9e995ab272293be1f7937822.tar.xz | |
futex_requeue_pi optimization
This patch provides the futex_requeue_pi functionality, which allows some
threads waiting on a normal futex to be requeued on the wait-queue of a
PI-futex.
This provides an optimization, already used for (normal) futexes, to be used
with the PI-futexes.
This optimization is currently used by the glibc in pthread_broadcast, when
using "normal" mutexes. With futex_requeue_pi, it can be used with
PRIO_INHERIT mutexes too.
Signed-off-by: Pierre Peiffer <pierre.peiffer@bull.net>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Ulrich Drepper <drepper@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'fs/xfs/xfs_dir2_block.c')
0 files changed, 0 insertions, 0 deletions