From: Waiman Long <longman@redhat.com>
To: Peter Zijlstra <peterz@infradead.org>, Ingo Molnar <mingo@redhat.com>
Cc: linux-kernel@vger.kernel.org, x86@kernel.org,
linux-alpha@vger.kernel.org, linux-ia64@vger.kernel.org,
linux-s390@vger.kernel.org, linux-arch@vger.kernel.org,
Davidlohr Bueso <dave@stgolabs.net>,
Dave Chinner <david@fromorbit.com>,
Waiman Long <longman@redhat.com>
Subject: [PATCH-tip v7 05/15] locking/rwsem: Move rwsem internal function declarations to rwsem-xadd.h
Date: Wed, 18 Oct 2017 14:30:21 -0400 [thread overview]
Message-ID: <1508351431-22375-6-git-send-email-longman@redhat.com> (raw)
In-Reply-To: <1508351431-22375-1-git-send-email-longman@redhat.com>
We don't need to expose rwsem internal functions which are not supposed
to be called directly from other kernel code.
Signed-off-by: Waiman Long <longman@redhat.com>
---
include/linux/rwsem.h | 7 -------
kernel/locking/rwsem-xadd.h | 7 +++++++
2 files changed, 7 insertions(+), 7 deletions(-)
diff --git a/include/linux/rwsem.h b/include/linux/rwsem.h
index 398c748..e75ea44 100644
--- a/include/linux/rwsem.h
+++ b/include/linux/rwsem.h
@@ -42,13 +42,6 @@ struct rw_semaphore {
#endif
};
-extern struct rw_semaphore *rwsem_down_read_failed(struct rw_semaphore *sem);
-extern struct rw_semaphore *rwsem_down_read_failed_killable(struct rw_semaphore *sem);
-extern struct rw_semaphore *rwsem_down_write_failed(struct rw_semaphore *sem);
-extern struct rw_semaphore *rwsem_down_write_failed_killable(struct rw_semaphore *sem);
-extern struct rw_semaphore *rwsem_wake(struct rw_semaphore *);
-extern struct rw_semaphore *rwsem_downgrade_wake(struct rw_semaphore *sem);
-
#define RWSEM_UNLOCKED_VALUE 0
/* In all implementations count != 0 means locked */
diff --git a/kernel/locking/rwsem-xadd.h b/kernel/locking/rwsem-xadd.h
index 64afa35..2a8d878 100644
--- a/kernel/locking/rwsem-xadd.h
+++ b/kernel/locking/rwsem-xadd.h
@@ -90,6 +90,13 @@ static inline void rwsem_set_reader_owned(struct rw_semaphore *sem)
#define RWSEM_COUNT_LOCKED(c) ((c) & RWSEM_LOCK_MASK)
+extern struct rw_semaphore *rwsem_down_read_failed(struct rw_semaphore *sem);
+extern struct rw_semaphore *rwsem_down_read_failed_killable(struct rw_semaphore *sem);
+extern struct rw_semaphore *rwsem_down_write_failed(struct rw_semaphore *sem);
+extern struct rw_semaphore *rwsem_down_write_failed_killable(struct rw_semaphore *sem);
+extern struct rw_semaphore *rwsem_wake(struct rw_semaphore *);
+extern struct rw_semaphore *rwsem_downgrade_wake(struct rw_semaphore *sem);
+
/*
* lock for reading
*/
--
1.8.3.1
next prev parent reply other threads:[~2017-10-18 18:30 UTC|newest]
Thread overview: 17+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-10-18 18:30 [PATCH-tip v7 00/15] locking/rwsem: Rework rwsem-xadd & enable new rwsem features Waiman Long
2017-10-18 18:30 ` [PATCH-tip v7 01/15] locking/rwsem: relocate rwsem_down_read_failed() Waiman Long
2017-10-18 18:30 ` [PATCH-tip v7 02/15] locking/rwsem: Implement a new locking scheme Waiman Long
2017-10-18 18:30 ` [PATCH-tip v7 03/15] locking/rwsem: Move owner setting code from rwsem.c to rwsem-xadd.h Waiman Long
2017-10-18 18:30 ` [PATCH-tip v7 04/15] locking/rwsem: Remove kernel/locking/rwsem.h Waiman Long
2017-10-18 18:30 ` Waiman Long [this message]
2017-10-18 18:30 ` [PATCH-tip v7 06/15] locking/rwsem: Remove arch specific rwsem files Waiman Long
2017-10-18 18:30 ` [PATCH-tip v7 07/15] locking/rwsem: Implement lock handoff to prevent lock starvation Waiman Long
2017-10-18 18:30 ` [PATCH-tip v7 08/15] locking/rwsem: Enable readers spinning on writer Waiman Long
2017-10-18 18:30 ` [PATCH-tip v7 09/15] locking/rwsem: Make rwsem_spin_on_owner() return a tri-state value Waiman Long
2017-10-18 18:30 ` [PATCH-tip v7 10/15] locking/rwsem: Enable count-based spinning on reader Waiman Long
2017-10-18 18:30 ` [PATCH-tip v7 11/15] locking/rwsem: Remove rwsem_wake spinlock optimization Waiman Long
2017-10-18 18:30 ` [PATCH-tip v7 12/15] locking/rwsem: Eliminate redundant writer wakeup calls Waiman Long
2017-10-18 18:30 ` [PATCH-tip v7 13/15] locking/rwsem: Improve fairness to writers Waiman Long
2017-10-18 18:30 ` [PATCH-tip v7 14/15] locking/rwsem: Make waiting writer to optimistically spin for the lock Waiman Long
2017-10-18 18:30 ` [PATCH-tip v7 15/15] locking/rwsem: Wake up all readers in wait queue Waiman Long
2017-10-19 15:21 ` [PATCH-tip v7 00/15] locking/rwsem: Rework rwsem-xadd & enable new rwsem features Waiman Long
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