From 54d47a2be5e7f928fb77b2f5a0761f6bd3c9dbff Mon Sep 17 00:00:00 2001
From: Frederic Weisbecker <fweisbec@gmail.com>
Date: Tue, 4 May 2010 04:54:47 +0200
Subject: [PATCH] lockdep: No need to disable preemption in debug atomic ops
No need to disable preemption in the debug_atomic_* ops, as
we ensure interrupts are disabled already.
So let's use the __this_cpu_ops() rather than this_cpu_ops() that
enclose the ops in a preempt disabled section.
Signed-off-by: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Peter Zijlstra <peterz@infradead.org>
---
kernel/lockdep_internals.h | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/kernel/lockdep_internals.h b/kernel/lockdep_internals.h
index 8d929c717d3e..4f560cfedc8f 100644
--- a/kernel/lockdep_internals.h
+++ b/kernel/lockdep_internals.h
@@ -144,12 +144,12 @@ DECLARE_PER_CPU(struct lockdep_stats, lockdep_stats);
#define debug_atomic_inc(ptr) { \
WARN_ON_ONCE(!irqs_disabled()); \
- this_cpu_inc(lockdep_stats.ptr); \
+ __this_cpu_inc(lockdep_stats.ptr); \
}
#define debug_atomic_dec(ptr) { \
WARN_ON_ONCE(!irqs_disabled()); \
- this_cpu_dec(lockdep_stats.ptr); \
+ __this_cpu_dec(lockdep_stats.ptr); \
}
#define debug_atomic_read(ptr) ({ \
--
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