migrate_disable pushd down in rt_spin_trylock_irqsave

PATCH In review Nicholas Mc Guire 1 participant 1 message Nov 30, 2013

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Nicholas Mc Guire

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2013-11-30 03:07 UTC #0 lore raw

PATCH 2/4 migrate_disable pushd down in rt_spin_trylock_irqsave

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From 045071bcd2c41337466a6fb07b5325fb09d3d569 Mon Sep 17 00:00:00 2001

From: Nicholas Mc Guire <[email protected]>
Date: Fri, 29 Nov 2013 00:17:27 -0500
Subject: [PATCH 2/4] migrate_disable pushd down in rt_spin_trylock_irqsave

Signed-off-by Nicholas Mc Guire <[email protected]>

---
 kernel/rtmutex.c |    7 +++----
 1 files changed, 3 insertions(+), 4 deletions(-)

kernel/rtmutex.c +3 -4

index 4e9691f..891ac58 100644
@@ -938,12 +938,11 @@ int __lockfunc rt_spin_trylock_irqsave(spinlock_t *lock, unsigned long *flags)
 	int ret;
 
 	*flags = 0;
-	migrate_disable();
 	ret = rt_mutex_trylock(&lock->lock);
-	if (ret)
+	if (ret) {
+		migrate_disable();
 		spin_acquire(&lock->dep_map, 0, 1, _RET_IP_);
-	else
-		migrate_enable();
+	}
 	return ret;
 }
 EXPORT_SYMBOL(rt_spin_trylock_irqsave);

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1.7.2.5