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authorDavidlohr Bueso <dave@stgolabs.net>2015-01-25 23:36:04 -0800
committerIngo Molnar <mingo@kernel.org>2015-02-04 07:57:39 +0100
commit73105994c57d06e40a33ab5a716db04e898b4c05 (patch)
tree70eb647de1b7435ed58ee54c8ee79c7a8ccfb010 /kernel
parent7c34e3180a01c800a40bc8535654d5735802fc1b (diff)
downloadlinux-73105994c57d06e40a33ab5a716db04e898b4c05.tar.bz2
locking/rwsem: Use task->state helpers
Call __set_task_state() instead of assigning the new state directly. These interfaces also aid CONFIG_DEBUG_ATOMIC_SLEEP environments, keeping track of who last changed the state. Signed-off-by: Davidlohr Bueso <dbueso@suse.de> Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> Cc: "Paul E. McKenney" <paulmck@linux.vnet.ibm.com> Cc: Jason Low <jason.low2@hp.com> Cc: Michel Lespinasse <walken@google.com> Cc: Tim Chen <tim.c.chen@linux.intel.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Link: http://lkml.kernel.org/r/1422257769-14083-2-git-send-email-dave@stgolabs.net Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'kernel')
-rw-r--r--kernel/locking/rwsem-spinlock.c2
-rw-r--r--kernel/locking/rwsem-xadd.c3
2 files changed, 2 insertions, 3 deletions
diff --git a/kernel/locking/rwsem-spinlock.c b/kernel/locking/rwsem-spinlock.c
index 2c93571162cb..2555ae15ec14 100644
--- a/kernel/locking/rwsem-spinlock.c
+++ b/kernel/locking/rwsem-spinlock.c
@@ -154,7 +154,7 @@ void __sched __down_read(struct rw_semaphore *sem)
set_task_state(tsk, TASK_UNINTERRUPTIBLE);
}
- tsk->state = TASK_RUNNING;
+ __set_task_state(tsk, TASK_RUNNING);
out:
;
}
diff --git a/kernel/locking/rwsem-xadd.c b/kernel/locking/rwsem-xadd.c
index 7628c3fc37ca..2f7cc4076f50 100644
--- a/kernel/locking/rwsem-xadd.c
+++ b/kernel/locking/rwsem-xadd.c
@@ -242,8 +242,7 @@ struct rw_semaphore __sched *rwsem_down_read_failed(struct rw_semaphore *sem)
schedule();
}
- tsk->state = TASK_RUNNING;
-
+ __set_task_state(tsk, TASK_RUNNING);
return sem;
}
EXPORT_SYMBOL(rwsem_down_read_failed);