diff options
| author | Jan Beulich <[email protected]> | 2011-07-19 11:39:03 +0100 |
|---|---|---|
| committer | Ingo Molnar <[email protected]> | 2011-07-21 09:20:59 +0200 |
| commit | ac619f4eba45da10053fc991f8a5d47b3be79fa3 (patch) | |
| tree | c1abddc5657dd6efa9a8e8ed2fb4303bd01643dc /tools/perf/util/scripting-engines/trace-event-python.c | |
| parent | 7e794cb7e36ccdb8c44b8ca7738720625b7aa2da (diff) | |
x86: Serialize SMP bootup CMOS accesses on rtc_lock
With CPU hotplug, there is a theoretical race between other CMOS
(namely RTC) accesses and those done in the SMP secondary
processor bringup path.
I am unware of the problem having been noticed by anyone in practice,
but it would very likely be rather spurious and very hard to reproduce.
So to be on the safe side, acquire rtc_lock around those accesses.
Signed-off-by: Jan Beulich <[email protected]>
Cc: John Stultz <[email protected]>
Link: http://lkml.kernel.org/r/[email protected]
Signed-off-by: Ingo Molnar <[email protected]>
Diffstat (limited to 'tools/perf/util/scripting-engines/trace-event-python.c')
0 files changed, 0 insertions, 0 deletions