diff options
| author | Peter Zijlstra <peterz@infradead.org> | 2014-01-29 06:51:42 -0500 |
|---|---|---|
| committer | Ingo Molnar <mingo@kernel.org> | 2014-03-11 07:14:56 -0400 |
| commit | fb0527bd5ea99bfeb2dd91e3c1433ecf745d6b99 (patch) | |
| tree | b3ab4c067c035688d4295fdcadf00170465db7df /kernel/locking/Makefile | |
| parent | 1d8fe7dc8078b23e060ec62ccb4cdc1ac3c41bf8 (diff) | |
locking/mutexes: Introduce cancelable MCS lock for adaptive spinning
Since we want a task waiting for a mutex_lock() to go to sleep and
reschedule on need_resched() we must be able to abort the
mcs_spin_lock() around the adaptive spin.
Therefore implement a cancelable mcs lock.
Signed-off-by: Peter Zijlstra <peterz@infradead.org>
Cc: chegu_vinod@hp.com
Cc: paulmck@linux.vnet.ibm.com
Cc: Waiman.Long@hp.com
Cc: torvalds@linux-foundation.org
Cc: tglx@linutronix.de
Cc: riel@redhat.com
Cc: akpm@linux-foundation.org
Cc: davidlohr@hp.com
Cc: hpa@zytor.com
Cc: andi@firstfloor.org
Cc: aswin@hp.com
Cc: scott.norton@hp.com
Cc: Jason Low <jason.low2@hp.com>
Link: http://lkml.kernel.org/n/tip-62hcl5wxydmjzd182zhvk89m@git.kernel.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'kernel/locking/Makefile')
| -rw-r--r-- | kernel/locking/Makefile | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/kernel/locking/Makefile b/kernel/locking/Makefile index baab8e5e7f66..2a9ee96ecf00 100644 --- a/kernel/locking/Makefile +++ b/kernel/locking/Makefile | |||
| @@ -1,5 +1,5 @@ | |||
| 1 | 1 | ||
| 2 | obj-y += mutex.o semaphore.o rwsem.o lglock.o | 2 | obj-y += mutex.o semaphore.o rwsem.o lglock.o mcs_spinlock.o |
| 3 | 3 | ||
| 4 | ifdef CONFIG_FUNCTION_TRACER | 4 | ifdef CONFIG_FUNCTION_TRACER |
| 5 | CFLAGS_REMOVE_lockdep.o = -pg | 5 | CFLAGS_REMOVE_lockdep.o = -pg |