Commit 54d47a2b authored May 04, 2010 by Frederic Weisbecker

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>

parent fa9a97de

kernel/lockdep_internals.h

+2 −2

Original line number	Diff line number	Diff line
		@@ -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) ({ \