linux-kernel - [tip:core/locking] rwsem: Remove redundant asmregparm annotation

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Date:	Thu, 27 Jan 2011 11:58:07 GMT
From:	tip-bot for Thomas Gleixner <tglx@...utronix.de>
To:	linux-tip-commits@...r.kernel.org
Cc:	linux-kernel@...r.kernel.org, hpa@...or.com, mingo@...hat.com,
	peterz@...radead.org, chris@...kel.net, lethal@...ux-sh.org,
	tony.luck@...el.com, davem@...emloft.net, dhowells@...hat.com,
	benh@...nel.crashing.org, mattst88@...il.com,
	heiko.carstens@...ibm.com, tglx@...utronix.de
Subject: [tip:core/locking] rwsem: Remove redundant asmregparm annotation

Commit-ID:  d123375425d7df4b6081a631fc1203fceafa59b2
Gitweb:     http://git.kernel.org/tip/d123375425d7df4b6081a631fc1203fceafa59b2
Author:     Thomas Gleixner <tglx@...utronix.de>
AuthorDate: Wed, 26 Jan 2011 21:32:01 +0100
Committer:  Thomas Gleixner <tglx@...utronix.de>
CommitDate: Thu, 27 Jan 2011 12:30:40 +0100

rwsem: Remove redundant asmregparm annotation

Peter Zijlstra pointed out, that the only user of asmregparm (x86) is
compiling the kernel already with -mregparm=3. So the annotation of
the rwsem functions is redundant. Remove it.

Signed-off-by: Thomas Gleixner <tglx@...utronix.de>
Cc: Peter Zijlstra <peterz@...radead.org>
Cc: David Howells <dhowells@...hat.com>
Cc: Benjamin Herrenschmidt <benh@...nel.crashing.org>
Cc: Matt Turner <mattst88@...il.com>
Cc: Tony Luck <tony.luck@...el.com>
Cc: Heiko Carstens <heiko.carstens@...ibm.com>
Cc: Paul Mundt <lethal@...ux-sh.org>
Cc: David Miller <davem@...emloft.net>
Cc: Chris Zankel <chris@...kel.net>
LKML-Reference: <alpine.LFD.2.00.1101262130450.31804@...alhost6.localdomain6>
Signed-off-by: Thomas Gleixner <tglx@...utronix.de>
---
 include/linux/rwsem.h |    8 ++++----
 lib/rwsem.c           |   10 ++++------
 2 files changed, 8 insertions(+), 10 deletions(-)

diff --git a/include/linux/rwsem.h b/include/linux/rwsem.h
index f7c957f..a8afe9c 100644
--- a/include/linux/rwsem.h
+++ b/include/linux/rwsem.h
@@ -32,10 +32,10 @@ struct rw_semaphore {
 #endif
 };
 
-extern asmregparm struct rw_semaphore *rwsem_down_read_failed(struct rw_semaphore *sem);
-extern asmregparm struct rw_semaphore *rwsem_down_write_failed(struct rw_semaphore *sem);
-extern asmregparm struct rw_semaphore *rwsem_wake(struct rw_semaphore *);
-extern asmregparm struct rw_semaphore *rwsem_downgrade_wake(struct rw_semaphore *sem);
+extern struct rw_semaphore *rwsem_down_read_failed(struct rw_semaphore *sem);
+extern struct rw_semaphore *rwsem_down_write_failed(struct rw_semaphore *sem);
+extern struct rw_semaphore *rwsem_wake(struct rw_semaphore *);
+extern struct rw_semaphore *rwsem_downgrade_wake(struct rw_semaphore *sem);
 
 /* Include the arch specific part */
 #include <asm/rwsem.h>
diff --git a/lib/rwsem.c b/lib/rwsem.c
index f236d7c..aa7c305 100644
--- a/lib/rwsem.c
+++ b/lib/rwsem.c
@@ -222,8 +222,7 @@ rwsem_down_failed_common(struct rw_semaphore *sem,
 /*
  * wait for the read lock to be granted
  */
-asmregparm struct rw_semaphore __sched *
-rwsem_down_read_failed(struct rw_semaphore *sem)
+struct rw_semaphore __sched *rwsem_down_read_failed(struct rw_semaphore *sem)
 {
 	return rwsem_down_failed_common(sem, RWSEM_WAITING_FOR_READ,
 					-RWSEM_ACTIVE_READ_BIAS);
@@ -232,8 +231,7 @@ rwsem_down_read_failed(struct rw_semaphore *sem)
 /*
  * wait for the write lock to be granted
  */
-asmregparm struct rw_semaphore __sched *
-rwsem_down_write_failed(struct rw_semaphore *sem)
+struct rw_semaphore __sched *rwsem_down_write_failed(struct rw_semaphore *sem)
 {
 	return rwsem_down_failed_common(sem, RWSEM_WAITING_FOR_WRITE,
 					-RWSEM_ACTIVE_WRITE_BIAS);
@@ -243,7 +241,7 @@ rwsem_down_write_failed(struct rw_semaphore *sem)
  * handle waking up a waiter on the semaphore
  * - up_read/up_write has decremented the active part of count if we come here
  */
-asmregparm struct rw_semaphore *rwsem_wake(struct rw_semaphore *sem)
+struct rw_semaphore *rwsem_wake(struct rw_semaphore *sem)
 {
 	unsigned long flags;
 
@@ -263,7 +261,7 @@ asmregparm struct rw_semaphore *rwsem_wake(struct rw_semaphore *sem)
  * - caller incremented waiting part of count and discovered it still negative
  * - just wake up any readers at the front of the queue
  */
-asmregparm struct rw_semaphore *rwsem_downgrade_wake(struct rw_semaphore *sem)
+struct rw_semaphore *rwsem_downgrade_wake(struct rw_semaphore *sem)
 {
 	unsigned long flags;
 
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