Commit 54d47a2be5e7f928fb77b2f5a0761f6bd3c9dbff
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fa9a97dec6
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lockdep: No need to disable preemption in debug atomic ops
No need to disable preemption in the debug_atomic_* ops, as we ensure interrupts are disabled already. So let's use the __this_cpu_ops() rather than this_cpu_ops() that enclose the ops in a preempt disabled section. Signed-off-by: Frederic Weisbecker <fweisbec@gmail.com> Cc: Peter Zijlstra <peterz@infradead.org>
Showing 1 changed file with 2 additions and 2 deletions Side-by-side Diff
kernel/lockdep_internals.h
| ... | ... | @@ -144,12 +144,12 @@ |
| 144 | 144 | |
| 145 | 145 | #define debug_atomic_inc(ptr) { \ |
| 146 | 146 | WARN_ON_ONCE(!irqs_disabled()); \ |
| 147 | - this_cpu_inc(lockdep_stats.ptr); \ | |
| 147 | + __this_cpu_inc(lockdep_stats.ptr); \ | |
| 148 | 148 | } |
| 149 | 149 | |
| 150 | 150 | #define debug_atomic_dec(ptr) { \ |
| 151 | 151 | WARN_ON_ONCE(!irqs_disabled()); \ |
| 152 | - this_cpu_dec(lockdep_stats.ptr); \ | |
| 152 | + __this_cpu_dec(lockdep_stats.ptr); \ | |
| 153 | 153 | } |
| 154 | 154 | |
| 155 | 155 | #define debug_atomic_read(ptr) ({ \ |