diff options
| author | Steven Price <steven.price@arm.com> | 2019-10-25 16:41:43 +0300 |
|---|---|---|
| committer | Rob Herring <robh@kernel.org> | 2019-10-29 21:01:51 +0300 |
| commit | 9e62b885f71568d166c97b040b4b2e218c2a5584 (patch) | |
| tree | 8512b086cf60f7ebb36fba61ff85628e75fcb119 /drivers/gpu/drm/panfrost/panfrost_job.c | |
| parent | 221bc77914cbcccaac1918ba80dce807452e143d (diff) | |
| download | linux-9e62b885f71568d166c97b040b4b2e218c2a5584.tar.xz | |
drm/panfrost: Simplify devfreq utilisation tracking
Instead of tracking per-slot utilisation track a single value for the
entire GPU. Ultimately it doesn't matter if the GPU is busy with only
vertex or a combination of vertex and fragment processing - if it's busy
then it's busy and devfreq should be scaling appropriately.
This also makes way for being able to submit multiple jobs per slot
which requires more values than the original boolean per slot.
Reviewed-by: Tomeu Vizoso <tomeu.vizoso@collabora.com>
Reviewed-by: Alyssa Rosenzweig <alyssa.rosenzweig@collabora.com>
Signed-off-by: Steven Price <steven.price@arm.com>
Signed-off-by: Rob Herring <robh@kernel.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20191025134143.14324-3-steven.price@arm.com
Diffstat (limited to 'drivers/gpu/drm/panfrost/panfrost_job.c')
| -rw-r--r-- | drivers/gpu/drm/panfrost/panfrost_job.c | 15 |
1 files changed, 7 insertions, 8 deletions
diff --git a/drivers/gpu/drm/panfrost/panfrost_job.c b/drivers/gpu/drm/panfrost/panfrost_job.c index 33bf25ba506e..d411eb6c8eb9 100644 --- a/drivers/gpu/drm/panfrost/panfrost_job.c +++ b/drivers/gpu/drm/panfrost/panfrost_job.c @@ -155,8 +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_transition(pfdev, js); + panfrost_devfreq_record_busy(pfdev); job_write(pfdev, JS_HEAD_NEXT_LO(js), jc_head & 0xFFFFFFFF); job_write(pfdev, JS_HEAD_NEXT_HI(js), jc_head >> 32); @@ -404,7 +403,7 @@ static void panfrost_job_timedout(struct drm_sched_job *sched_job) } spin_unlock_irqrestore(&pfdev->js->job_lock, flags); - panfrost_devfreq_record_transition(pfdev, js); + panfrost_devfreq_record_idle(pfdev); panfrost_device_reset(pfdev); for (i = 0; i < NUM_JOB_SLOTS; i++) @@ -467,7 +466,7 @@ 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_transition(pfdev, j); + panfrost_devfreq_record_idle(pfdev); dma_fence_signal_locked(job->done_fence); pm_runtime_put_autosuspend(pfdev->dev); @@ -568,14 +567,14 @@ int panfrost_job_is_idle(struct panfrost_device *pfdev) struct panfrost_job_slot *js = pfdev->js; int i; + /* Check whether the hardware is idle */ + if (atomic_read(&pfdev->devfreq.busy_count)) + return false; + for (i = 0; i < NUM_JOB_SLOTS; i++) { /* If there are any jobs in the HW queue, we're not idle */ if (atomic_read(&js->queue[i].sched.hw_rq_count)) return false; - - /* Check whether the hardware is idle */ - if (pfdev->devfreq.slot[i].busy) - return false; } return true; |