| Message ID | 1350640292-22468-3-git-send-email-daniel.lezcano@linaro.org |
|---|---|
| State | New |
| Headers | show |
On Friday, October 19, 2012 11:51:30 AM Daniel Lezcano wrote: > The cpuidle_device is retrieved in the function by using directly > the global variable. But the caller of this function already have > this device and it can be passed as a parameter. That is one small > step to encapsulate the code more. > > Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org> > --- > drivers/acpi/processor_idle.c | 11 ++++++----- > 1 files changed, 6 insertions(+), 5 deletions(-) > > diff --git a/drivers/acpi/processor_idle.c b/drivers/acpi/processor_idle.c > index 9aac69b..5c4330f 100644 > --- a/drivers/acpi/processor_idle.c > +++ b/drivers/acpi/processor_idle.c > @@ -974,13 +974,14 @@ struct cpuidle_driver acpi_idle_driver = { > * device i.e. per-cpu data > * > * @pr: the ACPI processor > + * @dev : the cpuidle device > */ > -static int acpi_processor_setup_cpuidle_cx(struct acpi_processor *pr) > +static int acpi_processor_setup_cpuidle_cx(struct acpi_processor *pr, > + struct cpuidle_device *dev) > { > int i, count = CPUIDLE_DRIVER_STATE_START; > struct acpi_processor_cx *cx; > struct cpuidle_state_usage *state_usage; > - struct cpuidle_device *dev = per_cpu(acpi_cpuidle_device, pr->id); I'm not sure if that's worth it. The value of dev should be in the cache anyway and the way it is makes it clear that this is a per-CPU variable without tracking the call sequence. I'm not applying this unless you need it for some further changes. Thanks, Rafael > > if (!pr->flags.power_setup_done) > return -EINVAL; > @@ -1132,7 +1133,7 @@ int acpi_processor_hotplug(struct acpi_processor *pr) > cpuidle_disable_device(dev); > acpi_processor_get_power_info(pr); > if (pr->flags.power) { > - acpi_processor_setup_cpuidle_cx(pr); > + acpi_processor_setup_cpuidle_cx(pr, dev); > ret = cpuidle_enable_device(dev); > } > cpuidle_resume_and_unlock(); > @@ -1189,8 +1190,8 @@ int acpi_processor_cst_has_changed(struct acpi_processor *pr) > continue; > acpi_processor_get_power_info(_pr); > if (_pr->flags.power) { > - acpi_processor_setup_cpuidle_cx(_pr); > dev = per_cpu(acpi_cpuidle_device, cpu); > + acpi_processor_setup_cpuidle_cx(_pr, dev); > cpuidle_enable_device(dev); > } > } > @@ -1259,7 +1260,7 @@ int __cpuinit acpi_processor_power_init(struct acpi_processor *pr) > return -ENOMEM; > per_cpu(acpi_cpuidle_device, pr->id) = dev; > > - acpi_processor_setup_cpuidle_cx(pr); > + acpi_processor_setup_cpuidle_cx(pr, dev); > > /* Register per-cpu cpuidle_device. Cpuidle driver > * must already be registered before registering device >
diff --git a/drivers/acpi/processor_idle.c b/drivers/acpi/processor_idle.c index 9aac69b..5c4330f 100644 --- a/drivers/acpi/processor_idle.c +++ b/drivers/acpi/processor_idle.c @@ -974,13 +974,14 @@ struct cpuidle_driver acpi_idle_driver = { * device i.e. per-cpu data * * @pr: the ACPI processor + * @dev : the cpuidle device */ -static int acpi_processor_setup_cpuidle_cx(struct acpi_processor *pr) +static int acpi_processor_setup_cpuidle_cx(struct acpi_processor *pr, + struct cpuidle_device *dev) { int i, count = CPUIDLE_DRIVER_STATE_START; struct acpi_processor_cx *cx; struct cpuidle_state_usage *state_usage; - struct cpuidle_device *dev = per_cpu(acpi_cpuidle_device, pr->id); if (!pr->flags.power_setup_done) return -EINVAL; @@ -1132,7 +1133,7 @@ int acpi_processor_hotplug(struct acpi_processor *pr) cpuidle_disable_device(dev); acpi_processor_get_power_info(pr); if (pr->flags.power) { - acpi_processor_setup_cpuidle_cx(pr); + acpi_processor_setup_cpuidle_cx(pr, dev); ret = cpuidle_enable_device(dev); } cpuidle_resume_and_unlock(); @@ -1189,8 +1190,8 @@ int acpi_processor_cst_has_changed(struct acpi_processor *pr) continue; acpi_processor_get_power_info(_pr); if (_pr->flags.power) { - acpi_processor_setup_cpuidle_cx(_pr); dev = per_cpu(acpi_cpuidle_device, cpu); + acpi_processor_setup_cpuidle_cx(_pr, dev); cpuidle_enable_device(dev); } } @@ -1259,7 +1260,7 @@ int __cpuinit acpi_processor_power_init(struct acpi_processor *pr) return -ENOMEM; per_cpu(acpi_cpuidle_device, pr->id) = dev; - acpi_processor_setup_cpuidle_cx(pr); + acpi_processor_setup_cpuidle_cx(pr, dev); /* Register per-cpu cpuidle_device. Cpuidle driver * must already be registered before registering device
The cpuidle_device is retrieved in the function by using directly the global variable. But the caller of this function already have this device and it can be passed as a parameter. That is one small step to encapsulate the code more. Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org> --- drivers/acpi/processor_idle.c | 11 ++++++----- 1 files changed, 6 insertions(+), 5 deletions(-)