| Message ID | 1505460876-7303-8-git-send-email-akshay.adiga@linux.vnet.ibm.com |
|---|---|
| State | Superseded |
| Headers | show |
| Series | Enable stop4 idle state | expand |
* Akshay Adiga <akshay.adiga@linux.vnet.ibm.com> [2017-09-15 13:04:35]: > When a core enters stop4, it does not loose decrementer and time base. > Hence removing flags OPAL_PM_DEC_STOP and OPAL_PM_TIMEBASE_STOP. > > Signed-off-by: Akshay Adiga <akshay.adiga@linux.vnet.ibm.com> Reviewed-by: Vaidyanathan Srinivasan <svaidy@linux.vnet.ibm.com> > --- > hw/slw.c | 4 ++-- > 1 file changed, 2 insertions(+), 2 deletions(-) > > diff --git a/hw/slw.c b/hw/slw.c > index 1ce7608..561cbf7 100644 > --- a/hw/slw.c > +++ b/hw/slw.c > @@ -601,8 +601,8 @@ static struct cpu_idle_states power9_cpu_idle_states[] = { > .name = "stop4", > .latency_ns = 100000, > .residency_ns = 1000000, > - .flags = 1*OPAL_PM_DEC_STOP \ > - | 1*OPAL_PM_TIMEBASE_STOP \ > + .flags = 0*OPAL_PM_DEC_STOP \ > + | 0*OPAL_PM_TIMEBASE_STOP \ > | 1*OPAL_PM_LOSE_USER_CONTEXT \ > | 1*OPAL_PM_LOSE_HYP_CONTEXT \ > | 1*OPAL_PM_LOSE_FULL_CONTEXT \ > -- > 2.5.5 >
diff --git a/hw/slw.c b/hw/slw.c index 1ce7608..561cbf7 100644 --- a/hw/slw.c +++ b/hw/slw.c @@ -601,8 +601,8 @@ static struct cpu_idle_states power9_cpu_idle_states[] = { .name = "stop4", .latency_ns = 100000, .residency_ns = 1000000, - .flags = 1*OPAL_PM_DEC_STOP \ - | 1*OPAL_PM_TIMEBASE_STOP \ + .flags = 0*OPAL_PM_DEC_STOP \ + | 0*OPAL_PM_TIMEBASE_STOP \ | 1*OPAL_PM_LOSE_USER_CONTEXT \ | 1*OPAL_PM_LOSE_HYP_CONTEXT \ | 1*OPAL_PM_LOSE_FULL_CONTEXT \
When a core enters stop4, it does not loose decrementer and time base. Hence removing flags OPAL_PM_DEC_STOP and OPAL_PM_TIMEBASE_STOP. Signed-off-by: Akshay Adiga <akshay.adiga@linux.vnet.ibm.com> --- hw/slw.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-)