| commit | b01c746617da5e260803eb10ed64ca043e9a1241 | [log] [tgz] |
|---|---|---|
| author | Frederic Weisbecker <fweisbec@gmail.com> | Sat Nov 15 02:37:44 2008 +0100 |
| committer | Ingo Molnar <mingo@elte.hu> | Sun Nov 16 07:57:37 2008 +0100 |
| tree | 7b835904f337778b604048169dd064a87149aa99 | |
| parent | 985809608f758a8d3ddda4ce5a53ed0e57fb9e1b [diff] |
tracing/function-return-tracer: add a barrier to ensure return stack index is incremented in memory Impact: fix possible race condition in ftrace function return tracer This fixes a possible race condition if index incrementation is not immediately flushed in memory. Thanks for Andi Kleen and Steven Rostedt for pointing out this issue and give me this solution. Signed-off-by: Frederic Weisbecker <fweisbec@gmail.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>