diff options
-rw-r--r-- | kernel/trace/ring_buffer.c | 10 |
1 files changed, 5 insertions, 5 deletions
diff --git a/kernel/trace/ring_buffer.c b/kernel/trace/ring_buffer.c index 1d6526361d06..9c1e73da4e30 100644 --- a/kernel/trace/ring_buffer.c +++ b/kernel/trace/ring_buffer.c | |||
@@ -1025,12 +1025,8 @@ __rb_reserve_next(struct ring_buffer_per_cpu *cpu_buffer, | |||
1025 | } | 1025 | } |
1026 | 1026 | ||
1027 | if (next_page == head_page) { | 1027 | if (next_page == head_page) { |
1028 | if (!(buffer->flags & RB_FL_OVERWRITE)) { | 1028 | if (!(buffer->flags & RB_FL_OVERWRITE)) |
1029 | /* reset write */ | ||
1030 | if (tail <= BUF_PAGE_SIZE) | ||
1031 | local_set(&tail_page->write, tail); | ||
1032 | goto out_unlock; | 1029 | goto out_unlock; |
1033 | } | ||
1034 | 1030 | ||
1035 | /* tail_page has not moved yet? */ | 1031 | /* tail_page has not moved yet? */ |
1036 | if (tail_page == cpu_buffer->tail_page) { | 1032 | if (tail_page == cpu_buffer->tail_page) { |
@@ -1105,6 +1101,10 @@ __rb_reserve_next(struct ring_buffer_per_cpu *cpu_buffer, | |||
1105 | return event; | 1101 | return event; |
1106 | 1102 | ||
1107 | out_unlock: | 1103 | out_unlock: |
1104 | /* reset write */ | ||
1105 | if (tail <= BUF_PAGE_SIZE) | ||
1106 | local_set(&tail_page->write, tail); | ||
1107 | |||
1108 | __raw_spin_unlock(&cpu_buffer->lock); | 1108 | __raw_spin_unlock(&cpu_buffer->lock); |
1109 | local_irq_restore(flags); | 1109 | local_irq_restore(flags); |
1110 | return NULL; | 1110 | return NULL; |