| Message ID | 20220321095729.20655-5-lukasz.luba@arm.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | Introduce support for artificial Energy Model | expand |
Thanks! On Monday 21 Mar 2022 at 09:57:25 (+0000), Lukasz Luba wrote: > The .active_power() callback passes the device pointer when it's called. > Aligned with a convetion present in other subsystems and pass the 'dev' > as a first argument. It looks more cleaner. > > Adjust all affected drivers which implement that API callback. > > Suggested-by: Ionela Voinescu <ionela.voinescu@arm.com> > Signed-off-by: Lukasz Luba <lukasz.luba@arm.com> > --- > Documentation/power/energy-model.rst | 4 ++-- > drivers/cpufreq/mediatek-cpufreq-hw.c | 4 ++-- > drivers/cpufreq/scmi-cpufreq.c | 4 ++-- > drivers/opp/of.c | 6 +++--- > include/linux/energy_model.h | 6 +++--- > kernel/power/energy_model.c | 2 +- > 6 files changed, 13 insertions(+), 13 deletions(-) > > diff --git a/Documentation/power/energy-model.rst b/Documentation/power/energy-model.rst > index 49549aab41b4..fd29ed2506c0 100644 > --- a/Documentation/power/energy-model.rst > +++ b/Documentation/power/energy-model.rst > @@ -181,8 +181,8 @@ EM framework:: > > -> drivers/cpufreq/foo_cpufreq.c > > - 01 static int est_power(unsigned long *mW, unsigned long *KHz, > - 02 struct device *dev) > + 01 static int est_power(struct device *dev, unsigned long *mW, > + 02 unsigned long *KHz) > 03 { > 04 long freq, power; > 05 > diff --git a/drivers/cpufreq/mediatek-cpufreq-hw.c b/drivers/cpufreq/mediatek-cpufreq-hw.c > index 0a94c56ddad2..813cccbfe934 100644 > --- a/drivers/cpufreq/mediatek-cpufreq-hw.c > +++ b/drivers/cpufreq/mediatek-cpufreq-hw.c > @@ -51,8 +51,8 @@ static const u16 cpufreq_mtk_offsets[REG_ARRAY_SIZE] = { > }; > > static int __maybe_unused > -mtk_cpufreq_get_cpu_power(unsigned long *mW, > - unsigned long *KHz, struct device *cpu_dev) > +mtk_cpufreq_get_cpu_power(struct device *cpu_dev, unsigned long *mW, > + unsigned long *KHz) > { > struct mtk_cpufreq_data *data; > struct cpufreq_policy *policy; > diff --git a/drivers/cpufreq/scmi-cpufreq.c b/drivers/cpufreq/scmi-cpufreq.c > index 919fa6e3f462..6d2a4cf46db7 100644 > --- a/drivers/cpufreq/scmi-cpufreq.c > +++ b/drivers/cpufreq/scmi-cpufreq.c > @@ -96,8 +96,8 @@ scmi_get_sharing_cpus(struct device *cpu_dev, struct cpumask *cpumask) > } > > static int __maybe_unused > -scmi_get_cpu_power(unsigned long *power, unsigned long *KHz, > - struct device *cpu_dev) > +scmi_get_cpu_power(struct device *cpu_dev, unsigned long *power, > + unsigned long *KHz) > { > unsigned long Hz; > int ret, domain; > diff --git a/drivers/opp/of.c b/drivers/opp/of.c > index 440ab5a03df9..485ea980bde7 100644 > --- a/drivers/opp/of.c > +++ b/drivers/opp/of.c > @@ -1448,7 +1448,7 @@ EXPORT_SYMBOL_GPL(dev_pm_opp_get_of_node); > * Returns 0 on success or a proper -EINVAL value in case of error. > */ > static int __maybe_unused > -_get_dt_power(unsigned long *mW, unsigned long *kHz, struct device *dev) > +_get_dt_power(struct device *dev, unsigned long *mW, unsigned long *kHz) > { > struct dev_pm_opp *opp; > unsigned long opp_freq, opp_power; > @@ -1482,8 +1482,8 @@ _get_dt_power(unsigned long *mW, unsigned long *kHz, struct device *dev) > * Returns -EINVAL if the power calculation failed because of missing > * parameters, 0 otherwise. > */ > -static int __maybe_unused _get_power(unsigned long *mW, unsigned long *kHz, > - struct device *dev) > +static int __maybe_unused _get_power(struct device *dev, unsigned long *mW, > + unsigned long *kHz) > { > struct dev_pm_opp *opp; > struct device_node *np; > diff --git a/include/linux/energy_model.h b/include/linux/energy_model.h > index 92e82a322859..8419bffb4398 100644 > --- a/include/linux/energy_model.h > +++ b/include/linux/energy_model.h > @@ -101,11 +101,11 @@ struct em_data_callback { > /** > * active_power() - Provide power at the next performance state of > * a device > + * @dev : Device for which we do this operation (can be a CPU) > * @power : Active power at the performance state > * (modified) > * @freq : Frequency at the performance state in kHz > * (modified) > - * @dev : Device for which we do this operation (can be a CPU) > * > * active_power() must find the lowest performance state of 'dev' above > * 'freq' and update 'power' and 'freq' to the matching active power > @@ -117,8 +117,8 @@ struct em_data_callback { > * > * Return 0 on success. > */ > - int (*active_power)(unsigned long *power, unsigned long *freq, > - struct device *dev); > + int (*active_power)(struct device *dev, unsigned long *power, > + unsigned long *freq); > > /** > * get_cost() - Provide the cost at the given performance state of > diff --git a/kernel/power/energy_model.c b/kernel/power/energy_model.c > index 95a3b33001f6..babefc72085d 100644 > --- a/kernel/power/energy_model.c > +++ b/kernel/power/energy_model.c > @@ -140,7 +140,7 @@ static int em_create_perf_table(struct device *dev, struct em_perf_domain *pd, > * lowest performance state of 'dev' above 'freq' and updates > * 'power' and 'freq' accordingly. > */ > - ret = cb->active_power(&power, &freq, dev); > + ret = cb->active_power(dev, &power, &freq); > if (ret) { > dev_err(dev, "EM: invalid perf. state: %d\n", > ret); Reviewed-by: Ionela Voinescu <ionela.voinescu@arm.com> > -- > 2.17.1 >
diff --git a/Documentation/power/energy-model.rst b/Documentation/power/energy-model.rst index 49549aab41b4..fd29ed2506c0 100644 --- a/Documentation/power/energy-model.rst +++ b/Documentation/power/energy-model.rst @@ -181,8 +181,8 @@ EM framework:: -> drivers/cpufreq/foo_cpufreq.c - 01 static int est_power(unsigned long *mW, unsigned long *KHz, - 02 struct device *dev) + 01 static int est_power(struct device *dev, unsigned long *mW, + 02 unsigned long *KHz) 03 { 04 long freq, power; 05 diff --git a/drivers/cpufreq/mediatek-cpufreq-hw.c b/drivers/cpufreq/mediatek-cpufreq-hw.c index 0a94c56ddad2..813cccbfe934 100644 --- a/drivers/cpufreq/mediatek-cpufreq-hw.c +++ b/drivers/cpufreq/mediatek-cpufreq-hw.c @@ -51,8 +51,8 @@ static const u16 cpufreq_mtk_offsets[REG_ARRAY_SIZE] = { }; static int __maybe_unused -mtk_cpufreq_get_cpu_power(unsigned long *mW, - unsigned long *KHz, struct device *cpu_dev) +mtk_cpufreq_get_cpu_power(struct device *cpu_dev, unsigned long *mW, + unsigned long *KHz) { struct mtk_cpufreq_data *data; struct cpufreq_policy *policy; diff --git a/drivers/cpufreq/scmi-cpufreq.c b/drivers/cpufreq/scmi-cpufreq.c index 919fa6e3f462..6d2a4cf46db7 100644 --- a/drivers/cpufreq/scmi-cpufreq.c +++ b/drivers/cpufreq/scmi-cpufreq.c @@ -96,8 +96,8 @@ scmi_get_sharing_cpus(struct device *cpu_dev, struct cpumask *cpumask) } static int __maybe_unused -scmi_get_cpu_power(unsigned long *power, unsigned long *KHz, - struct device *cpu_dev) +scmi_get_cpu_power(struct device *cpu_dev, unsigned long *power, + unsigned long *KHz) { unsigned long Hz; int ret, domain; diff --git a/drivers/opp/of.c b/drivers/opp/of.c index 440ab5a03df9..485ea980bde7 100644 --- a/drivers/opp/of.c +++ b/drivers/opp/of.c @@ -1448,7 +1448,7 @@ EXPORT_SYMBOL_GPL(dev_pm_opp_get_of_node); * Returns 0 on success or a proper -EINVAL value in case of error. */ static int __maybe_unused -_get_dt_power(unsigned long *mW, unsigned long *kHz, struct device *dev) +_get_dt_power(struct device *dev, unsigned long *mW, unsigned long *kHz) { struct dev_pm_opp *opp; unsigned long opp_freq, opp_power; @@ -1482,8 +1482,8 @@ _get_dt_power(unsigned long *mW, unsigned long *kHz, struct device *dev) * Returns -EINVAL if the power calculation failed because of missing * parameters, 0 otherwise. */ -static int __maybe_unused _get_power(unsigned long *mW, unsigned long *kHz, - struct device *dev) +static int __maybe_unused _get_power(struct device *dev, unsigned long *mW, + unsigned long *kHz) { struct dev_pm_opp *opp; struct device_node *np; diff --git a/include/linux/energy_model.h b/include/linux/energy_model.h index 92e82a322859..8419bffb4398 100644 --- a/include/linux/energy_model.h +++ b/include/linux/energy_model.h @@ -101,11 +101,11 @@ struct em_data_callback { /** * active_power() - Provide power at the next performance state of * a device + * @dev : Device for which we do this operation (can be a CPU) * @power : Active power at the performance state * (modified) * @freq : Frequency at the performance state in kHz * (modified) - * @dev : Device for which we do this operation (can be a CPU) * * active_power() must find the lowest performance state of 'dev' above * 'freq' and update 'power' and 'freq' to the matching active power @@ -117,8 +117,8 @@ struct em_data_callback { * * Return 0 on success. */ - int (*active_power)(unsigned long *power, unsigned long *freq, - struct device *dev); + int (*active_power)(struct device *dev, unsigned long *power, + unsigned long *freq); /** * get_cost() - Provide the cost at the given performance state of diff --git a/kernel/power/energy_model.c b/kernel/power/energy_model.c index 95a3b33001f6..babefc72085d 100644 --- a/kernel/power/energy_model.c +++ b/kernel/power/energy_model.c @@ -140,7 +140,7 @@ static int em_create_perf_table(struct device *dev, struct em_perf_domain *pd, * lowest performance state of 'dev' above 'freq' and updates * 'power' and 'freq' accordingly. */ - ret = cb->active_power(&power, &freq, dev); + ret = cb->active_power(dev, &power, &freq); if (ret) { dev_err(dev, "EM: invalid perf. state: %d\n", ret);
The .active_power() callback passes the device pointer when it's called. Aligned with a convetion present in other subsystems and pass the 'dev' as a first argument. It looks more cleaner. Adjust all affected drivers which implement that API callback. Suggested-by: Ionela Voinescu <ionela.voinescu@arm.com> Signed-off-by: Lukasz Luba <lukasz.luba@arm.com> --- Documentation/power/energy-model.rst | 4 ++-- drivers/cpufreq/mediatek-cpufreq-hw.c | 4 ++-- drivers/cpufreq/scmi-cpufreq.c | 4 ++-- drivers/opp/of.c | 6 +++--- include/linux/energy_model.h | 6 +++--- kernel/power/energy_model.c | 2 +- 6 files changed, 13 insertions(+), 13 deletions(-)