diff options
| author | H. Peter Anvin <[email protected]> | 2010-09-20 13:04:45 -0700 |
|---|---|---|
| committer | H. Peter Anvin <[email protected]> | 2010-09-20 15:51:59 -0700 |
| commit | ce5f68246bf2385d6174856708d0b746dc378f20 (patch) | |
| tree | ba2436cd462a72222a995a6ba887f66232f50843 /tools/perf/util/trace-event-scripting.c | |
| parent | a68e5c94f7d3dd64fef34dd5d97e365cae4bb42a (diff) | |
x86, hotplug: In the MWAIT case of play_dead, CLFLUSH the cache line
When we're using MWAIT for play_dead, explicitly CLFLUSH the cache
line before executing MONITOR. This is a potential workaround for the
Xeon 7400 erratum AAI65 after having a spurious wakeup and returning
around the loop. "Potential" here because it is not certain that that
erratum could actually trigger; however, the CLFLUSH should be
harmless.
Signed-off-by: H. Peter Anvin <[email protected]>
Acked-by: Venkatesh Pallipadi <[email protected]>
Cc: Asit Mallick <[email protected]>
Cc: Arjan van de Ven <[email protected]>
Cc: Len Brown <[email protected]>
Diffstat (limited to 'tools/perf/util/trace-event-scripting.c')
0 files changed, 0 insertions, 0 deletions