Messages in this thread | | | Subject | Re: [PATCH 04/15] drm/panfrost: introduce panfrost_devfreq struct | From | Steven Price <> | Date | Thu, 28 May 2020 14:22:41 +0100 |
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On 10/05/2020 17:55, Clément Péron wrote: > Introduce a proper panfrost_devfreq to deal with devfreq variables. > > Signed-off-by: Clément Péron <peron.clem@gmail.com>
Reviewed-by: Steven Price <steven.price@arm.com>
> --- > drivers/gpu/drm/panfrost/panfrost_devfreq.c | 76 ++++++++++++--------- > drivers/gpu/drm/panfrost/panfrost_devfreq.h | 20 +++++- > drivers/gpu/drm/panfrost/panfrost_device.h | 11 +-- > drivers/gpu/drm/panfrost/panfrost_job.c | 6 +- > 4 files changed, 66 insertions(+), 47 deletions(-) > > diff --git a/drivers/gpu/drm/panfrost/panfrost_devfreq.c b/drivers/gpu/drm/panfrost/panfrost_devfreq.c > index df7b71da9a84..962550363391 100644 > --- a/drivers/gpu/drm/panfrost/panfrost_devfreq.c > +++ b/drivers/gpu/drm/panfrost/panfrost_devfreq.c > @@ -10,23 +10,23 @@ > #include "panfrost_device.h" > #include "panfrost_devfreq.h" > > -static void panfrost_devfreq_update_utilization(struct panfrost_device *pfdev) > +static void panfrost_devfreq_update_utilization(struct panfrost_devfreq *pfdevfreq) > { > ktime_t now; > ktime_t last; > > - if (!pfdev->devfreq.devfreq) > + if (!pfdevfreq->devfreq) > return; > > now = ktime_get(); > - last = pfdev->devfreq.time_last_update; > + last = pfdevfreq->time_last_update; > > - if (atomic_read(&pfdev->devfreq.busy_count) > 0) > - pfdev->devfreq.busy_time += ktime_sub(now, last); > + if (atomic_read(&pfdevfreq->busy_count) > 0) > + pfdevfreq->busy_time += ktime_sub(now, last); > else > - pfdev->devfreq.idle_time += ktime_sub(now, last); > + pfdevfreq->idle_time += ktime_sub(now, last); > > - pfdev->devfreq.time_last_update = now; > + pfdevfreq->time_last_update = now; > } > > static int panfrost_devfreq_target(struct device *dev, unsigned long *freq, > @@ -47,30 +47,31 @@ static int panfrost_devfreq_target(struct device *dev, unsigned long *freq, > return 0; > } > > -static void panfrost_devfreq_reset(struct panfrost_device *pfdev) > +static void panfrost_devfreq_reset(struct panfrost_devfreq *pfdevfreq) > { > - pfdev->devfreq.busy_time = 0; > - pfdev->devfreq.idle_time = 0; > - pfdev->devfreq.time_last_update = ktime_get(); > + pfdevfreq->busy_time = 0; > + pfdevfreq->idle_time = 0; > + pfdevfreq->time_last_update = ktime_get(); > } > > static int panfrost_devfreq_get_dev_status(struct device *dev, > struct devfreq_dev_status *status) > { > struct panfrost_device *pfdev = dev_get_drvdata(dev); > + struct panfrost_devfreq *pfdevfreq = &pfdev->pfdevfreq; > > - panfrost_devfreq_update_utilization(pfdev); > + panfrost_devfreq_update_utilization(pfdevfreq); > > status->current_frequency = clk_get_rate(pfdev->clock); > - status->total_time = ktime_to_ns(ktime_add(pfdev->devfreq.busy_time, > - pfdev->devfreq.idle_time)); > + status->total_time = ktime_to_ns(ktime_add(pfdevfreq->busy_time, > + pfdevfreq->idle_time)); > > - status->busy_time = ktime_to_ns(pfdev->devfreq.busy_time); > + status->busy_time = ktime_to_ns(pfdevfreq->busy_time); > > - panfrost_devfreq_reset(pfdev); > + panfrost_devfreq_reset(pfdevfreq); > > - dev_dbg(pfdev->dev, "busy %lu total %lu %lu %% freq %lu MHz\n", status->busy_time, > - status->total_time, > + dev_dbg(pfdev->dev, "busy %lu total %lu %lu %% freq %lu MHz\n", > + status->busy_time, status->total_time, > status->busy_time / (status->total_time / 100), > status->current_frequency / 1000 / 1000); > > @@ -91,6 +92,7 @@ int panfrost_devfreq_init(struct panfrost_device *pfdev) > struct device *dev = &pfdev->pdev->dev; > struct devfreq *devfreq; > struct thermal_cooling_device *cooling; > + struct panfrost_devfreq *pfdevfreq = &pfdev->pfdevfreq; > > ret = dev_pm_opp_of_add_table(dev); > if (ret == -ENODEV) /* Optional, continue without devfreq */ > @@ -98,7 +100,7 @@ int panfrost_devfreq_init(struct panfrost_device *pfdev) > else if (ret) > return ret; > > - panfrost_devfreq_reset(pfdev); > + panfrost_devfreq_reset(pfdevfreq); > > cur_freq = clk_get_rate(pfdev->clock); > > @@ -116,53 +118,59 @@ int panfrost_devfreq_init(struct panfrost_device *pfdev) > dev_pm_opp_of_remove_table(dev); > return PTR_ERR(devfreq); > } > - pfdev->devfreq.devfreq = devfreq; > + pfdevfreq->devfreq = devfreq; > > cooling = of_devfreq_cooling_register(dev->of_node, devfreq); > if (IS_ERR(cooling)) > DRM_DEV_INFO(dev, "Failed to register cooling device\n"); > else > - pfdev->devfreq.cooling = cooling; > + pfdevfreq->cooling = cooling; > > return 0; > } > > void panfrost_devfreq_fini(struct panfrost_device *pfdev) > { > - if (pfdev->devfreq.cooling) > - devfreq_cooling_unregister(pfdev->devfreq.cooling); > + struct panfrost_devfreq *pfdevfreq = &pfdev->pfdevfreq; > + > + if (pfdevfreq->cooling) > + devfreq_cooling_unregister(pfdevfreq->cooling); > dev_pm_opp_of_remove_table(&pfdev->pdev->dev); > } > > void panfrost_devfreq_resume(struct panfrost_device *pfdev) > { > - if (!pfdev->devfreq.devfreq) > + struct panfrost_devfreq *pfdevfreq = &pfdev->pfdevfreq; > + > + if (!pfdevfreq->devfreq) > return; > > - panfrost_devfreq_reset(pfdev); > + panfrost_devfreq_reset(pfdevfreq); > > - devfreq_resume_device(pfdev->devfreq.devfreq); > + devfreq_resume_device(pfdevfreq->devfreq); > } > > void panfrost_devfreq_suspend(struct panfrost_device *pfdev) > { > - if (!pfdev->devfreq.devfreq) > + struct panfrost_devfreq *pfdevfreq = &pfdev->pfdevfreq; > + > + if (!pfdevfreq->devfreq) > return; > > - devfreq_suspend_device(pfdev->devfreq.devfreq); > + devfreq_suspend_device(pfdevfreq->devfreq); > } > > -void panfrost_devfreq_record_busy(struct panfrost_device *pfdev) > +void panfrost_devfreq_record_busy(struct panfrost_devfreq *pfdevfreq) > { > - panfrost_devfreq_update_utilization(pfdev); > - atomic_inc(&pfdev->devfreq.busy_count); > + panfrost_devfreq_update_utilization(pfdevfreq); > + atomic_inc(&pfdevfreq->busy_count); > } > > -void panfrost_devfreq_record_idle(struct panfrost_device *pfdev) > +void panfrost_devfreq_record_idle(struct panfrost_devfreq *pfdevfreq) > { > int count; > > - panfrost_devfreq_update_utilization(pfdev); > - count = atomic_dec_if_positive(&pfdev->devfreq.busy_count); > + panfrost_devfreq_update_utilization(pfdevfreq); > + count = atomic_dec_if_positive(&pfdevfreq->busy_count); > WARN_ON(count < 0); > } > diff --git a/drivers/gpu/drm/panfrost/panfrost_devfreq.h b/drivers/gpu/drm/panfrost/panfrost_devfreq.h > index 0611beffc8d0..0697f8d5aa34 100644 > --- a/drivers/gpu/drm/panfrost/panfrost_devfreq.h > +++ b/drivers/gpu/drm/panfrost/panfrost_devfreq.h > @@ -4,13 +4,29 @@ > #ifndef __PANFROST_DEVFREQ_H__ > #define __PANFROST_DEVFREQ_H__ > > +#include <linux/ktime.h> > + > +struct devfreq; > +struct thermal_cooling_device; > + > +struct panfrost_device; > + > +struct panfrost_devfreq { > + struct devfreq *devfreq; > + struct thermal_cooling_device *cooling; > + ktime_t busy_time; > + ktime_t idle_time; > + ktime_t time_last_update; > + atomic_t busy_count; > +}; > + > int panfrost_devfreq_init(struct panfrost_device *pfdev); > void panfrost_devfreq_fini(struct panfrost_device *pfdev); > > void panfrost_devfreq_resume(struct panfrost_device *pfdev); > void panfrost_devfreq_suspend(struct panfrost_device *pfdev); > > -void panfrost_devfreq_record_busy(struct panfrost_device *pfdev); > -void panfrost_devfreq_record_idle(struct panfrost_device *pfdev); > +void panfrost_devfreq_record_busy(struct panfrost_devfreq *devfreq); > +void panfrost_devfreq_record_idle(struct panfrost_devfreq *devfreq); > > #endif /* __PANFROST_DEVFREQ_H__ */ > diff --git a/drivers/gpu/drm/panfrost/panfrost_device.h b/drivers/gpu/drm/panfrost/panfrost_device.h > index c30c719a8059..2efa59c9d1c5 100644 > --- a/drivers/gpu/drm/panfrost/panfrost_device.h > +++ b/drivers/gpu/drm/panfrost/panfrost_device.h > @@ -13,6 +13,8 @@ > #include <drm/drm_mm.h> > #include <drm/gpu_scheduler.h> > > +#include "panfrost_devfreq.h" > + > struct panfrost_device; > struct panfrost_mmu; > struct panfrost_job_slot; > @@ -107,14 +109,7 @@ struct panfrost_device { > struct list_head shrinker_list; > struct shrinker shrinker; > > - struct { > - struct devfreq *devfreq; > - struct thermal_cooling_device *cooling; > - ktime_t busy_time; > - ktime_t idle_time; > - ktime_t time_last_update; > - atomic_t busy_count; > - } devfreq; > + struct panfrost_devfreq pfdevfreq; > }; > > struct panfrost_mmu { > diff --git a/drivers/gpu/drm/panfrost/panfrost_job.c b/drivers/gpu/drm/panfrost/panfrost_job.c > index 63e32a9f2749..a67f3eac6a58 100644 > --- a/drivers/gpu/drm/panfrost/panfrost_job.c > +++ b/drivers/gpu/drm/panfrost/panfrost_job.c > @@ -155,7 +155,7 @@ static void panfrost_job_hw_submit(struct panfrost_job *job, int js) > } > > cfg = panfrost_mmu_as_get(pfdev, &job->file_priv->mmu); > - panfrost_devfreq_record_busy(pfdev); > + panfrost_devfreq_record_busy(&pfdev->pfdevfreq); > > job_write(pfdev, JS_HEAD_NEXT_LO(js), jc_head & 0xFFFFFFFF); > job_write(pfdev, JS_HEAD_NEXT_HI(js), jc_head >> 32); > @@ -415,7 +415,7 @@ static void panfrost_job_timedout(struct drm_sched_job *sched_job) > } > spin_unlock_irqrestore(&pfdev->js->job_lock, flags); > > - panfrost_devfreq_record_idle(pfdev); > + panfrost_devfreq_record_idle(&pfdev->pfdevfreq); > panfrost_device_reset(pfdev); > > for (i = 0; i < NUM_JOB_SLOTS; i++) > @@ -478,7 +478,7 @@ static irqreturn_t panfrost_job_irq_handler(int irq, void *data) > pfdev->jobs[j] = NULL; > > panfrost_mmu_as_put(pfdev, &job->file_priv->mmu); > - panfrost_devfreq_record_idle(pfdev); > + panfrost_devfreq_record_idle(&pfdev->pfdevfreq); > > dma_fence_signal_locked(job->done_fence); > pm_runtime_put_autosuspend(pfdev->dev); >
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