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| author | Ingo Molnar <mingo@elte.hu> | 2009-11-15 09:50:38 +0100 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2009-11-15 09:50:41 +0100 |
| commit | 39dc78b6510323848e3356452f7dab9499736978 (patch) | |
| tree | cf8a8fede74e41b203fd00e3ccd21ead2e851442 /kernel/trace/ring_buffer.c | |
| parent | 4c49b12853fbb5eff4849b7b6a1e895776f027a1 (diff) | |
| parent | 156171c71a0dc4bce12b4408bb1591f8fe32dc1a (diff) | |
Merge commit 'v2.6.32-rc7' into perf/core
Merge reason: pick up perf fixlets
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'kernel/trace/ring_buffer.c')
| -rw-r--r-- | kernel/trace/ring_buffer.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/kernel/trace/ring_buffer.c b/kernel/trace/ring_buffer.c index 63446f12e47..db223fe8887 100644 --- a/kernel/trace/ring_buffer.c +++ b/kernel/trace/ring_buffer.c @@ -1196,6 +1196,7 @@ rb_remove_pages(struct ring_buffer_per_cpu *cpu_buffer, unsigned nr_pages) atomic_inc(&cpu_buffer->record_disabled); synchronize_sched(); + spin_lock_irq(&cpu_buffer->reader_lock); rb_head_page_deactivate(cpu_buffer); for (i = 0; i < nr_pages; i++) { @@ -1210,6 +1211,7 @@ rb_remove_pages(struct ring_buffer_per_cpu *cpu_buffer, unsigned nr_pages) return; rb_reset_cpu(cpu_buffer); + spin_unlock_irq(&cpu_buffer->reader_lock); rb_check_pages(cpu_buffer); |