| commit | 785888c544e0433f601df18ff98a3215b380b9c3 | [log] [tgz] |
|---|---|---|
| author | Steven Rostedt (VMware) <rostedt@goodmis.org> | Tue Mar 17 17:32:27 2020 -0400 |
| committer | Steven Rostedt (VMware) <rostedt@goodmis.org> | Thu Mar 19 19:11:19 2020 -0400 |
| tree | 08ddcf77546860419687fc6a5c4b381d5053cc0a | |
| parent | 28e3fc56a471bbac39d24571e11dde64b15de988 [diff] |
ring-buffer: Have rb_iter_head_event() handle concurrent writer Have the ring_buffer_iter structure have a place to store an event, such that it can not be overwritten by a writer, and load it in such a way via rb_iter_head_event() that it will return NULL and reset the iter to the start of the current page if a writer updated the page. Link: http://lkml.kernel.org/r/20200317213416.306959216@goodmis.org Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org>