| Message ID | 20240117110443.2060704-3-quic_sibis@quicinc.com |
|---|---|
| State | Superseded |
| Headers | show |
| Series | cpufreq: scmi: Add boost frequency support | expand |
On Wed, Jan 17, 2024 at 04:34:42PM +0530, Sibi Sankar wrote: > All opps above the sustained level/frequency are treated as boost, so mark > them accordingly. > > Suggested-by: Sudeep Holla <sudeep.holla@arm.com> > Signed-off-by: Sibi Sankar <quic_sibis@quicinc.com> > --- > drivers/firmware/arm_scmi/perf.c | 11 ++++++++++- > 1 file changed, 10 insertions(+), 1 deletion(-) > > diff --git a/drivers/firmware/arm_scmi/perf.c b/drivers/firmware/arm_scmi/perf.c > index e286f04ee6e3..d3fb8c804b3d 100644 > --- a/drivers/firmware/arm_scmi/perf.c > +++ b/drivers/firmware/arm_scmi/perf.c > @@ -811,7 +811,7 @@ static int scmi_dvfs_device_opps_add(const struct scmi_protocol_handle *ph, > struct device *dev, u32 domain) > { > int idx, ret; > - unsigned long freq; > + unsigned long freq, sustained_freq; > struct dev_pm_opp_data data = {}; > struct perf_dom_info *dom; > > @@ -819,12 +819,21 @@ static int scmi_dvfs_device_opps_add(const struct scmi_protocol_handle *ph, > if (IS_ERR(dom)) > return PTR_ERR(dom); > > + if (!dom->level_indexing_mode) > + sustained_freq = dom->sustained_perf_level * dom->mult_factor; > + else > + sustained_freq = dom->sustained_freq_khz * dom->mult_factor; > + Can't we just use dom->sustained_freq_khz * 1000UL in both the cases ? Other than that this series looks good to me but it would be good to explain how you would use this. Since it is enabled by default, do you plan to disable boost at time and when ? If it is for thermal reasons, why your other series handling thermal and limits notification from the firmware not sufficient.
On Wed, Jan 31, 2024 at 03:29:43PM +0100, Pierre Gondois wrote: > Hello Sibi, > > On 1/17/24 12:04, Sibi Sankar wrote: > > All opps above the sustained level/frequency are treated as boost, so mark > > them accordingly. > > > > Suggested-by: Sudeep Holla <sudeep.holla@arm.com> > > Signed-off-by: Sibi Sankar <quic_sibis@quicinc.com> > > --- > > drivers/firmware/arm_scmi/perf.c | 11 ++++++++++- > > 1 file changed, 10 insertions(+), 1 deletion(-) > > > > diff --git a/drivers/firmware/arm_scmi/perf.c b/drivers/firmware/arm_scmi/perf.c > > index e286f04ee6e3..d3fb8c804b3d 100644 > > --- a/drivers/firmware/arm_scmi/perf.c > > +++ b/drivers/firmware/arm_scmi/perf.c > > @@ -811,7 +811,7 @@ static int scmi_dvfs_device_opps_add(const struct scmi_protocol_handle *ph, > > struct device *dev, u32 domain) > > { > > int idx, ret; > > - unsigned long freq; > > + unsigned long freq, sustained_freq; > > struct dev_pm_opp_data data = {}; > > struct perf_dom_info *dom; > > @@ -819,12 +819,21 @@ static int scmi_dvfs_device_opps_add(const struct scmi_protocol_handle *ph, > > if (IS_ERR(dom)) > > return PTR_ERR(dom); > > + if (!dom->level_indexing_mode) > > + sustained_freq = dom->sustained_perf_level * dom->mult_factor; > > + else > > + sustained_freq = dom->sustained_freq_khz * dom->mult_factor; > > + > > for (idx = 0; idx < dom->opp_count; idx++) { > > if (!dom->level_indexing_mode) > > freq = dom->opp[idx].perf * dom->mult_factor; > > else > > freq = dom->opp[idx].indicative_freq * dom->mult_factor; > > + /* All opps above the sustained level/frequency are treated as boost */ > > + if (sustained_freq && freq > sustained_freq) > > It seems the sustained_freq is not optional since SCMI v1.0, > is it necessary to check that (sustained_freq != 0) ? > Technically correct, we don't have to. But since day 1, we checked and handled 0 for perf_level specifically to avoid division by zero. I am just worried if there are any platforms in the wild with these values as 0. We can start without the check and add it if someone complains perhaps ?
diff --git a/drivers/firmware/arm_scmi/perf.c b/drivers/firmware/arm_scmi/perf.c index e286f04ee6e3..d3fb8c804b3d 100644 --- a/drivers/firmware/arm_scmi/perf.c +++ b/drivers/firmware/arm_scmi/perf.c @@ -811,7 +811,7 @@ static int scmi_dvfs_device_opps_add(const struct scmi_protocol_handle *ph, struct device *dev, u32 domain) { int idx, ret; - unsigned long freq; + unsigned long freq, sustained_freq; struct dev_pm_opp_data data = {}; struct perf_dom_info *dom; @@ -819,12 +819,21 @@ static int scmi_dvfs_device_opps_add(const struct scmi_protocol_handle *ph, if (IS_ERR(dom)) return PTR_ERR(dom); + if (!dom->level_indexing_mode) + sustained_freq = dom->sustained_perf_level * dom->mult_factor; + else + sustained_freq = dom->sustained_freq_khz * dom->mult_factor; + for (idx = 0; idx < dom->opp_count; idx++) { if (!dom->level_indexing_mode) freq = dom->opp[idx].perf * dom->mult_factor; else freq = dom->opp[idx].indicative_freq * dom->mult_factor; + /* All opps above the sustained level/frequency are treated as boost */ + if (sustained_freq && freq > sustained_freq) + data.turbo = true; + data.level = dom->opp[idx].perf; data.freq = freq;
All opps above the sustained level/frequency are treated as boost, so mark them accordingly. Suggested-by: Sudeep Holla <sudeep.holla@arm.com> Signed-off-by: Sibi Sankar <quic_sibis@quicinc.com> --- drivers/firmware/arm_scmi/perf.c | 11 ++++++++++- 1 file changed, 10 insertions(+), 1 deletion(-)