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| author | Steven Rostedt (VMware) <rostedt@goodmis.org> | 2020-03-17 17:32:30 -0400 |
|---|---|---|
| committer | Steven Rostedt (VMware) <rostedt@goodmis.org> | 2020-03-27 16:38:58 -0400 |
| commit | 1039221cc2787dee51a7ffbf9b0e79d192dadf76 (patch) | |
| tree | 315c4b3db6390c3b93389158532f72bf65c85fe2 /kernel/trace/ring_buffer.c | |
| parent | 07b8b10ec94f852502db739047a2803ed36ccf46 (diff) | |
| download | linux-stable-1039221cc2787dee51a7ffbf9b0e79d192dadf76.tar.gz linux-stable-1039221cc2787dee51a7ffbf9b0e79d192dadf76.tar.bz2 linux-stable-1039221cc2787dee51a7ffbf9b0e79d192dadf76.zip | |
ring-buffer: Do not disable recording when there is an iterator
Now that the iterator can handle a concurrent writer, do not disable writing
to the ring buffer when there is an iterator present.
Link: http://lkml.kernel.org/r/20200317213416.759770696@goodmis.org
Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
Diffstat (limited to 'kernel/trace/ring_buffer.c')
| -rw-r--r-- | kernel/trace/ring_buffer.c | 2 |
1 files changed, 0 insertions, 2 deletions
diff --git a/kernel/trace/ring_buffer.c b/kernel/trace/ring_buffer.c index e2de5b448c91..af2f10d9f3f1 100644 --- a/kernel/trace/ring_buffer.c +++ b/kernel/trace/ring_buffer.c @@ -4312,7 +4312,6 @@ ring_buffer_read_prepare(struct trace_buffer *buffer, int cpu, gfp_t flags) iter->cpu_buffer = cpu_buffer; atomic_inc(&cpu_buffer->resize_disabled); - atomic_inc(&cpu_buffer->record_disabled); return iter; } @@ -4385,7 +4384,6 @@ ring_buffer_read_finish(struct ring_buffer_iter *iter) rb_check_pages(cpu_buffer); raw_spin_unlock_irqrestore(&cpu_buffer->reader_lock, flags); - atomic_dec(&cpu_buffer->record_disabled); atomic_dec(&cpu_buffer->resize_disabled); kfree(iter->event); kfree(iter); |