| commit | 747e94ae3d1b4c9bf5380e569f614eb9040b79e7 | [log] [tgz] |
|---|---|---|
| author | Steven Rostedt <srostedt@redhat.com> | Fri Oct 08 13:51:48 2010 -0400 |
| committer | Steven Rostedt <rostedt@goodmis.org> | Tue Oct 19 13:22:36 2010 -0400 |
| tree | 29404444fa5106e6d3361fc6c85b4463777ec3a3 | |
| parent | 51ea8a88aae425915b458bfe295f1f10a3d52781 [diff] |
ring-buffer: Make write slow path out of line Gcc inlines the slow path of the ring buffer write which can hurt performance. This patch simply forces the slow path function rb_move_tail() to always be a function. The ring_buffer_benchmark module with reader_disabled=1 shows that this patch changes the time to record an event from 135 ns to 132 ns. (3 ns or 2.22% improvement) Signed-off-by: Steven Rostedt <rostedt@goodmis.org>