Commit-ID: 913769f24eadcd38a936ffae41d9b4895ec02e43
Gitweb: http://git.kernel.org/tip/913769f24eadcd38a936ffae41d9b4895ec02e43
Author: Frederic Weisbecker <fweisbec@xxxxxxxxx>
AuthorDate: Thu, 15 Apr 2010 23:10:43 +0200
Committer: Frederic Weisbecker <fweisbec@xxxxxxxxx>
CommitDate: Fri, 30 Apr 2010 19:15:56 +0200
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@xxxxxxxxx>
Cc: Peter Zijlstra <peterz@xxxxxxxxxxxxx>
---
kernel/lockdep_internals.h | 10 ++--------
1 files changed, 2 insertions(+), 8 deletions(-)
diff --git a/kernel/lockdep_internals.h b/kernel/lockdep_internals.h
index 8d7d4b6..2b17476 100644
--- 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) ({ \
--
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