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| author | Frederic Weisbecker <fweisbec@gmail.com> | 2010-04-15 23:10:43 +0200 |
|---|---|---|
| committer | Frederic Weisbecker <fweisbec@gmail.com> | 2010-04-30 19:15:56 +0200 |
| commit | 913769f24eadcd38a936ffae41d9b4895ec02e43 (patch) | |
| tree | b1786f5789aa015f488a834a675c20120791bce3 /kernel/lockdep_internals.h | |
| parent | 8795d7717c467bea7b0a0649d44a258e09f34db2 (diff) | |
| download | lwn-913769f24eadcd38a936ffae41d9b4895ec02e43.tar.gz lwn-913769f24eadcd38a936ffae41d9b4895ec02e43.zip | |
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>
Diffstat (limited to 'kernel/lockdep_internals.h')
| -rw-r--r-- | 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 8d7d4b6c741a..2b174762fa0e 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) ({ \ |