34 lines
1.2 KiB
Diff
34 lines
1.2 KiB
Diff
From 31d7440b1833fad597cc874e3d63b2ca5b3a13f5 Mon Sep 17 00:00:00 2001
|
|
From: Thomas Gleixner <tglx@linutronix.de>
|
|
Date: Thu, 27 Sep 2012 11:11:46 +0200
|
|
Subject: [PATCH 110/365] mm: page_alloc: Use local_lock_on() instead of plain
|
|
spinlock
|
|
|
|
The plain spinlock while sufficient does not update the local_lock
|
|
internals. Use a proper local_lock function instead to ease debugging.
|
|
|
|
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
|
|
---
|
|
mm/page_alloc.c | 4 ++--
|
|
1 file changed, 2 insertions(+), 2 deletions(-)
|
|
|
|
diff --git a/mm/page_alloc.c b/mm/page_alloc.c
|
|
index 71278318ef1a..274e143ec367 100644
|
|
--- a/mm/page_alloc.c
|
|
+++ b/mm/page_alloc.c
|
|
@@ -299,9 +299,9 @@ static DEFINE_LOCAL_IRQ_LOCK(pa_lock);
|
|
|
|
#ifdef CONFIG_PREEMPT_RT_BASE
|
|
# define cpu_lock_irqsave(cpu, flags) \
|
|
- spin_lock_irqsave(&per_cpu(pa_lock, cpu).lock, flags)
|
|
+ local_lock_irqsave_on(pa_lock, flags, cpu)
|
|
# define cpu_unlock_irqrestore(cpu, flags) \
|
|
- spin_unlock_irqrestore(&per_cpu(pa_lock, cpu).lock, flags)
|
|
+ local_unlock_irqrestore_on(pa_lock, flags, cpu)
|
|
#else
|
|
# define cpu_lock_irqsave(cpu, flags) local_irq_save(flags)
|
|
# define cpu_unlock_irqrestore(cpu, flags) local_irq_restore(flags)
|
|
--
|
|
2.28.0
|
|
|