lockdep: Simplify debug atomic ops

Simplify debug_atomic_inc/dec by using this_cpu_inc/dec() instead of doing it through an indirect get_cpu_var() and a manual incrementation. Signed-off-by: Frederic Weisbecker <fweisbec@gmail.com> Cc: Peter Zijlstra <peterz@infradead.org>
mariobalanica · Apr 30, 2010 · 913769f · 913769f
1 parent 8795d77
commit 913769f
Showing 1 changed file with 2 additions and 8 deletions.
diff --git a/kernel/lockdep_internals.h b/kernel/lockdep_internals.h
@@ -140,19 +140,13 @@ struct lockdep_stats {
 DECLARE_PER_CPU(struct lockdep_stats, lockdep_stats);
 
 #define debug_atomic_inc(ptr)			{		\
-	struct lockdep_stats *__cpu_lockdep_stats;		\
-								\
 	WARN_ON_ONCE(!irqs_disabled());				\
-	__cpu_lockdep_stats = &__get_cpu_var(lockdep_stats);	\
-	__cpu_lockdep_stats->ptr++;				\
+	this_cpu_inc(lockdep_stats.ptr);			\
 }
 
 #define debug_atomic_dec(ptr)			{		\
-	struct lockdep_stats *__cpu_lockdep_stats;		\
-								\
 	WARN_ON_ONCE(!irqs_disabled());				\
-	__cpu_lockdep_stats = &__get_cpu_var(lockdep_stats);	\
-	__cpu_lockdep_stats->ptr--;				\
+	this_cpu_inc(lockdep_stats.ptr);			\
 }
 
 #define debug_atomic_read(ptr)		({				\