| Message ID | f6153683d88cce25319945e4308bef46edaaaa54.1544782279.git.viresh.kumar@linaro.org (mailing list archive) |
|---|---|
| State | Not Applicable, archived |
| Headers | show |
| Series | PM / Domains: Allow performance state propagation | expand |
On Fri, 14 Dec 2018 at 11:15, Viresh Kumar <viresh.kumar@linaro.org> wrote: > > Separate out _genpd_set_performance_state() and > _genpd_reeval_performance_state() from > dev_pm_genpd_set_performance_state() to handle performance state update > related stuff. This will be used by a later commit. > > Tested-by: Rajendra Nayak <rnayak@codeaurora.org> > Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org> Reviewed-by: Ulf Hansson <ulf.hansson@linaro.org> Nitpick: Would be nice to remove the beginning "_" from both _genpd_reeval_performance_state() and _genpd_set_performance_state(), as to be consistent with existing function naming in genpd. However, it's not a big deal and can be done on top. > --- > drivers/base/power/domain.c | 95 +++++++++++++++++++++---------------- > 1 file changed, 55 insertions(+), 40 deletions(-) > > diff --git a/drivers/base/power/domain.c b/drivers/base/power/domain.c > index 1e98c637e069..808ba41b6580 100644 > --- a/drivers/base/power/domain.c > +++ b/drivers/base/power/domain.c > @@ -239,6 +239,56 @@ static void genpd_update_accounting(struct generic_pm_domain *genpd) > static inline void genpd_update_accounting(struct generic_pm_domain *genpd) {} > #endif > > +static int _genpd_reeval_performance_state(struct generic_pm_domain *genpd, > + unsigned int state) > +{ > + struct generic_pm_domain_data *pd_data; > + struct pm_domain_data *pdd; > + > + /* New requested state is same as Max requested state */ > + if (state == genpd->performance_state) > + return state; > + > + /* New requested state is higher than Max requested state */ > + if (state > genpd->performance_state) > + return state; > + > + /* Traverse all devices within the domain */ > + list_for_each_entry(pdd, &genpd->dev_list, list_node) { > + pd_data = to_gpd_data(pdd); > + > + if (pd_data->performance_state > state) > + state = pd_data->performance_state; > + } > + > + /* > + * We aren't propagating performance state changes of a subdomain to its > + * masters as we don't have hardware that needs it. Over that, the > + * performance states of subdomain and its masters may not have > + * one-to-one mapping and would require additional information. We can > + * get back to this once we have hardware that needs it. For that > + * reason, we don't have to consider performance state of the subdomains > + * of genpd here. > + */ > + return state; > +} > + > +static int _genpd_set_performance_state(struct generic_pm_domain *genpd, > + unsigned int state) > +{ > + int ret; > + > + if (state == genpd->performance_state) > + return 0; > + > + ret = genpd->set_performance_state(genpd, state); > + if (ret) > + return ret; > + > + genpd->performance_state = state; > + return 0; > +} > + > /** > * dev_pm_genpd_set_performance_state- Set performance state of device's power > * domain. > @@ -257,10 +307,9 @@ static inline void genpd_update_accounting(struct generic_pm_domain *genpd) {} > int dev_pm_genpd_set_performance_state(struct device *dev, unsigned int state) > { > struct generic_pm_domain *genpd; > - struct generic_pm_domain_data *gpd_data, *pd_data; > - struct pm_domain_data *pdd; > + struct generic_pm_domain_data *gpd_data; > unsigned int prev; > - int ret = 0; > + int ret; > > genpd = dev_to_genpd(dev); > if (IS_ERR(genpd)) > @@ -281,45 +330,11 @@ int dev_pm_genpd_set_performance_state(struct device *dev, unsigned int state) > prev = gpd_data->performance_state; > gpd_data->performance_state = state; > > - /* New requested state is same as Max requested state */ > - if (state == genpd->performance_state) > - goto unlock; > - > - /* New requested state is higher than Max requested state */ > - if (state > genpd->performance_state) > - goto update_state; > - > - /* Traverse all devices within the domain */ > - list_for_each_entry(pdd, &genpd->dev_list, list_node) { > - pd_data = to_gpd_data(pdd); > - > - if (pd_data->performance_state > state) > - state = pd_data->performance_state; > - } > - > - if (state == genpd->performance_state) > - goto unlock; > - > - /* > - * We aren't propagating performance state changes of a subdomain to its > - * masters as we don't have hardware that needs it. Over that, the > - * performance states of subdomain and its masters may not have > - * one-to-one mapping and would require additional information. We can > - * get back to this once we have hardware that needs it. For that > - * reason, we don't have to consider performance state of the subdomains > - * of genpd here. > - */ > - > -update_state: > - ret = genpd->set_performance_state(genpd, state); > - if (ret) { > + state = _genpd_reeval_performance_state(genpd, state); > + ret = _genpd_set_performance_state(genpd, state); > + if (ret) > gpd_data->performance_state = prev; > - goto unlock; > - } > > - genpd->performance_state = state; > - > -unlock: > genpd_unlock(genpd); > > return ret; > -- > 2.19.1.568.g152ad8e3369a >
On 14-12-18, 11:40, Ulf Hansson wrote: > Nitpick: Would be nice to remove the beginning "_" from both > _genpd_reeval_performance_state() and _genpd_set_performance_state(), > as to be consistent with existing function naming in genpd. However, > it's not a big deal and can be done on top. Actually it is used at some places and so I did the same for the internal routines: _genpd_power_on _genpd_power_off __genpd_runtime_suspend __genpd_runtime_resume __genpd_dev_pm_attach
diff --git a/drivers/base/power/domain.c b/drivers/base/power/domain.c index 1e98c637e069..808ba41b6580 100644 --- a/drivers/base/power/domain.c +++ b/drivers/base/power/domain.c @@ -239,6 +239,56 @@ static void genpd_update_accounting(struct generic_pm_domain *genpd) static inline void genpd_update_accounting(struct generic_pm_domain *genpd) {} #endif +static int _genpd_reeval_performance_state(struct generic_pm_domain *genpd, + unsigned int state) +{ + struct generic_pm_domain_data *pd_data; + struct pm_domain_data *pdd; + + /* New requested state is same as Max requested state */ + if (state == genpd->performance_state) + return state; + + /* New requested state is higher than Max requested state */ + if (state > genpd->performance_state) + return state; + + /* Traverse all devices within the domain */ + list_for_each_entry(pdd, &genpd->dev_list, list_node) { + pd_data = to_gpd_data(pdd); + + if (pd_data->performance_state > state) + state = pd_data->performance_state; + } + + /* + * We aren't propagating performance state changes of a subdomain to its + * masters as we don't have hardware that needs it. Over that, the + * performance states of subdomain and its masters may not have + * one-to-one mapping and would require additional information. We can + * get back to this once we have hardware that needs it. For that + * reason, we don't have to consider performance state of the subdomains + * of genpd here. + */ + return state; +} + +static int _genpd_set_performance_state(struct generic_pm_domain *genpd, + unsigned int state) +{ + int ret; + + if (state == genpd->performance_state) + return 0; + + ret = genpd->set_performance_state(genpd, state); + if (ret) + return ret; + + genpd->performance_state = state; + return 0; +} + /** * dev_pm_genpd_set_performance_state- Set performance state of device's power * domain. @@ -257,10 +307,9 @@ static inline void genpd_update_accounting(struct generic_pm_domain *genpd) {} int dev_pm_genpd_set_performance_state(struct device *dev, unsigned int state) { struct generic_pm_domain *genpd; - struct generic_pm_domain_data *gpd_data, *pd_data; - struct pm_domain_data *pdd; + struct generic_pm_domain_data *gpd_data; unsigned int prev; - int ret = 0; + int ret; genpd = dev_to_genpd(dev); if (IS_ERR(genpd)) @@ -281,45 +330,11 @@ int dev_pm_genpd_set_performance_state(struct device *dev, unsigned int state) prev = gpd_data->performance_state; gpd_data->performance_state = state; - /* New requested state is same as Max requested state */ - if (state == genpd->performance_state) - goto unlock; - - /* New requested state is higher than Max requested state */ - if (state > genpd->performance_state) - goto update_state; - - /* Traverse all devices within the domain */ - list_for_each_entry(pdd, &genpd->dev_list, list_node) { - pd_data = to_gpd_data(pdd); - - if (pd_data->performance_state > state) - state = pd_data->performance_state; - } - - if (state == genpd->performance_state) - goto unlock; - - /* - * We aren't propagating performance state changes of a subdomain to its - * masters as we don't have hardware that needs it. Over that, the - * performance states of subdomain and its masters may not have - * one-to-one mapping and would require additional information. We can - * get back to this once we have hardware that needs it. For that - * reason, we don't have to consider performance state of the subdomains - * of genpd here. - */ - -update_state: - ret = genpd->set_performance_state(genpd, state); - if (ret) { + state = _genpd_reeval_performance_state(genpd, state); + ret = _genpd_set_performance_state(genpd, state); + if (ret) gpd_data->performance_state = prev; - goto unlock; - } - genpd->performance_state = state; - -unlock: genpd_unlock(genpd); return ret;