diff options
| -rw-r--r-- | arch/powerpc/platforms/pseries/dtl.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/arch/powerpc/platforms/pseries/dtl.c b/arch/powerpc/platforms/pseries/dtl.c index dc9b0f81e60..fafcaa0e81e 100644 --- a/arch/powerpc/platforms/pseries/dtl.c +++ b/arch/powerpc/platforms/pseries/dtl.c @@ -107,6 +107,10 @@ static int dtl_enable(struct dtl *dtl) /* set our initial buffer indices */ dtl->last_idx = lppaca[dtl->cpu].dtl_idx = 0; + /* ensure that our updates to the lppaca fields have occurred before + * we actually enable the logging */ + smp_wmb(); + /* enable event logging */ lppaca[dtl->cpu].dtl_enable_mask = dtl_event_mask; |