linux-kernel - [tip:locking/core] locking/rwsem: Move rwsem internal function declarations to rwsem-xadd.h

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Date:   Tue, 16 Apr 2019 03:02:33 -0700
From:   tip-bot for Waiman Long <tipbot@...or.com>
To:     linux-tip-commits@...r.kernel.org
Cc:     will.deacon@....com, bp@...en8.de, tglx@...utronix.de,
        longman@...hat.com, torvalds@...ux-foundation.org,
        akpm@...ux-foundation.org, a.p.zijlstra@...llo.nl,
        peterz@...radead.org, linux-kernel@...r.kernel.org, hpa@...or.com,
        paulmck@...ux.vnet.ibm.com, tim.c.chen@...ux.intel.com,
        dave@...olabs.net, arnd@...db.de, dbueso@...e.de, mingo@...nel.org
Subject: [tip:locking/core] locking/rwsem: Move rwsem internal function
 declarations to rwsem-xadd.h

Commit-ID:  12a30a7fc142a123c61da9623bd824d95d36c12e
Gitweb:     https://git.kernel.org/tip/12a30a7fc142a123c61da9623bd824d95d36c12e
Author:     Waiman Long <longman@...hat.com>
AuthorDate: Thu, 4 Apr 2019 13:43:12 -0400
Committer:  Ingo Molnar <mingo@...nel.org>
CommitDate: Wed, 10 Apr 2019 10:56:00 +0200

locking/rwsem: Move rwsem internal function declarations to rwsem-xadd.h

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@...hat.com>
Acked-by: Peter Zijlstra <a.p.zijlstra@...llo.nl>
Acked-by: Will Deacon <will.deacon@....com>
Acked-by: Davidlohr Bueso <dbueso@...e.de>
Cc: Andrew Morton <akpm@...ux-foundation.org>
Cc: Arnd Bergmann <arnd@...db.de>
Cc: Borislav Petkov <bp@...en8.de>
Cc: Davidlohr Bueso <dave@...olabs.net>
Cc: Linus Torvalds <torvalds@...ux-foundation.org>
Cc: Paul E. McKenney <paulmck@...ux.vnet.ibm.com>
Cc: Peter Zijlstra <peterz@...radead.org>
Cc: Thomas Gleixner <tglx@...utronix.de>
Cc: Tim Chen <tim.c.chen@...ux.intel.com>
Link: http://lkml.kernel.org/r/20190404174320.22416-4-longman@redhat.com
Signed-off-by: Ingo Molnar <mingo@...nel.org>
---
 include/linux/rwsem.h  | 7 -------
 kernel/locking/rwsem.h | 7 +++++++
 2 files changed, 7 insertions(+), 7 deletions(-)

diff --git a/include/linux/rwsem.h b/include/linux/rwsem.h
index 0fc41062c649..b44e533235c7 100644
--- a/include/linux/rwsem.h
+++ b/include/linux/rwsem.h
@@ -46,13 +46,6 @@ struct rw_semaphore {
  */
 #define RWSEM_OWNER_UNKNOWN	((struct task_struct *)-2L)
 
-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);
-
 /* In all implementations count != 0 means locked */
 static inline int rwsem_is_locked(struct rw_semaphore *sem)
 {
diff --git a/kernel/locking/rwsem.h b/kernel/locking/rwsem.h
index ee24c4f257a5..19997c82270b 100644
--- a/kernel/locking/rwsem.h
+++ b/kernel/locking/rwsem.h
@@ -153,6 +153,13 @@ static inline void rwsem_clear_reader_owned(struct rw_semaphore *sem)
 }
 #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 *sem);
+extern struct rw_semaphore *rwsem_downgrade_wake(struct rw_semaphore *sem);
+
 /*
  * lock for reading
  */