>From 19176ba9a8a83e4acf34d9739fa06d6c18fa957f Mon Sep 17 00:00:00 2001
From: Nicholas Mc Guire <der.herr@xxxxxxx>
Date: Tue, 19 Nov 2013 23:33:10 -0500
Subject: [PATCH 2/2] remove recursive call to migrate_disable in write_lock_bh
write_lock_bh/write_unlock_bh calls local_bh_disable/enable which
already does a migrate_disable/enable no need for this recursive call.
patch is on top of 3.12-rt2
No change of functionality
Signed-off-by: Nicholas Mc Guire <der.herr@xxxxxxx>
---
include/linux/rwlock_rt.h | 2 --
1 files changed, 0 insertions(+), 2 deletions(-)
diff --git a/include/linux/rwlock_rt.h b/include/linux/rwlock_rt.h
index 87f5a1d..9a5fe26 100644
--- a/include/linux/rwlock_rt.h
+++ b/include/linux/rwlock_rt.h
@@ -67,7 +67,6 @@ extern void __rt_rwlock_init(rwlock_t *rwlock, char *name, struct lock_class_key
#define write_lock_bh(lock) \
do { \
local_bh_disable(); \
- migrate_disable(); \
rt_write_lock(lock); \
} while (0)
@@ -96,7 +95,6 @@ extern void __rt_rwlock_init(rwlock_t *rwlock, char *name, struct lock_class_key
#define write_unlock_bh(lock) \
do { \
rt_write_unlock(lock); \
- migrate_enable(); \
local_bh_enable(); \
} while (0)
--
1.7.2.5
--
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