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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>
This commit is contained in:
Frederic Weisbecker 2010-04-15 23:10:43 +02:00
parent 8795d7717c
commit 913769f24e
1 changed files with 2 additions and 8 deletions
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10
kernel/lockdep_internals.h
View File

@ -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) ({ \