Messages in this thread Patch in this message | | | From | Frederic Weisbecker <> | Subject | [PATCH 2/2] lockdep: Simplify debug atomic ops | Date | Thu, 15 Apr 2010 23:10:43 +0200 |
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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> --- 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) ({ \ -- 1.6.2.3
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