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Merge branch 'tip/tracing/ftrace' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-2.6-trace into tracing/ftrace

hifive-unleashed-5.1
Ingo Molnar 2009-02-13 10:26:45 +01:00
parent 1c511f740f 45141d4667
commit d351c8db95
1 changed files with 5 additions and 5 deletions
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10
kernel/trace/ring_buffer.c
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@ -1017,7 +1017,7 @@ __rb_reserve_next(struct ring_buffer_per_cpu *cpu_buffer,
*/
if (unlikely(in_nmi())) {
if (!__raw_spin_trylock(&cpu_buffer->lock))
goto out_unlock;
goto out_reset;
} else
__raw_spin_lock(&cpu_buffer->lock);
@ -1030,7 +1030,7 @@ __rb_reserve_next(struct ring_buffer_per_cpu *cpu_buffer,
/* we grabbed the lock before incrementing */
if (RB_WARN_ON(cpu_buffer, next_page == reader_page))
goto out_unlock;
goto out_reset;
/*
* If for some reason, we had an interrupt storm that made
@ -1039,12 +1039,12 @@ __rb_reserve_next(struct ring_buffer_per_cpu *cpu_buffer,
*/
if (unlikely(next_page == commit_page)) {
WARN_ON_ONCE(1);
goto out_unlock;
goto out_reset;
}
if (next_page == head_page) {
if (!(buffer->flags & RB_FL_OVERWRITE))
goto out_unlock;
goto out_reset;
/* tail_page has not moved yet? */
if (tail_page == cpu_buffer->tail_page) {
@ -1118,7 +1118,7 @@ __rb_reserve_next(struct ring_buffer_per_cpu *cpu_buffer,
return event;
out_unlock:
out_reset:
/* reset write */
if (tail <= BUF_PAGE_SIZE)
local_set(&tail_page->write, tail);