| Message ID | 20240703155646.80928-1-steven.price@arm.com (mailing list archive) |
|---|---|
| State | New |
| Headers | show |
| Series | drm/panthor: Record devfreq busy as soon as a job is started | expand |
On Wed, 3 Jul 2024 16:56:46 +0100 Steven Price <steven.price@arm.com> wrote: > If a queue is already assigned to the hardware, then a newly submitted > job can start straight away without waiting for the tick. However in > this case the devfreq infrastructure isn't notified that the GPU is > busy. By the time the tick happens the job might well have finished and > no time will be accounted for the GPU being busy. > > Fix this by recording the GPU as busy directly in queue_run_job() in the > case where there is a CSG assigned and therefore we just ring the > doorbell. > > Fixes: de8548813824 ("drm/panthor: Add the scheduler logical block") > Signed-off-by: Steven Price <steven.price@arm.com> Reviewed-by: Boris Brezillon <boris.brezillon@collabora.com> > --- > drivers/gpu/drm/panthor/panthor_sched.c | 1 + > 1 file changed, 1 insertion(+) > > diff --git a/drivers/gpu/drm/panthor/panthor_sched.c b/drivers/gpu/drm/panthor/panthor_sched.c > index 951ff7e63ea8..e7afaa1ad8dc 100644 > --- a/drivers/gpu/drm/panthor/panthor_sched.c > +++ b/drivers/gpu/drm/panthor/panthor_sched.c > @@ -2942,6 +2942,7 @@ queue_run_job(struct drm_sched_job *sched_job) > pm_runtime_get(ptdev->base.dev); > sched->pm.has_ref = true; > } > + panthor_devfreq_record_busy(sched->ptdev); > } > > /* Update the last fence. */
On Wed, Jul 03, 2024 at 04:56:46PM +0100, Steven Price wrote: > If a queue is already assigned to the hardware, then a newly submitted > job can start straight away without waiting for the tick. However in > this case the devfreq infrastructure isn't notified that the GPU is > busy. By the time the tick happens the job might well have finished and > no time will be accounted for the GPU being busy. > > Fix this by recording the GPU as busy directly in queue_run_job() in the > case where there is a CSG assigned and therefore we just ring the > doorbell. > > Fixes: de8548813824 ("drm/panthor: Add the scheduler logical block") > Signed-off-by: Steven Price <steven.price@arm.com> Reviewed-by: Liviu Dudau <liviu.dudau@arm.com> > --- > drivers/gpu/drm/panthor/panthor_sched.c | 1 + > 1 file changed, 1 insertion(+) > > diff --git a/drivers/gpu/drm/panthor/panthor_sched.c b/drivers/gpu/drm/panthor/panthor_sched.c > index 951ff7e63ea8..e7afaa1ad8dc 100644 > --- a/drivers/gpu/drm/panthor/panthor_sched.c > +++ b/drivers/gpu/drm/panthor/panthor_sched.c > @@ -2942,6 +2942,7 @@ queue_run_job(struct drm_sched_job *sched_job) > pm_runtime_get(ptdev->base.dev); > sched->pm.has_ref = true; > } > + panthor_devfreq_record_busy(sched->ptdev); > } > > /* Update the last fence. */ > -- > 2.39.2 >
On 03/07/2024 16:56, Steven Price wrote: > If a queue is already assigned to the hardware, then a newly submitted > job can start straight away without waiting for the tick. However in > this case the devfreq infrastructure isn't notified that the GPU is > busy. By the time the tick happens the job might well have finished and > no time will be accounted for the GPU being busy. > > Fix this by recording the GPU as busy directly in queue_run_job() in the > case where there is a CSG assigned and therefore we just ring the > doorbell. > > Fixes: de8548813824 ("drm/panthor: Add the scheduler logical block") > Signed-off-by: Steven Price <steven.price@arm.com> > --- > drivers/gpu/drm/panthor/panthor_sched.c | 1 + > 1 file changed, 1 insertion(+) > > diff --git a/drivers/gpu/drm/panthor/panthor_sched.c b/drivers/gpu/drm/panthor/panthor_sched.c > index 951ff7e63ea8..e7afaa1ad8dc 100644 > --- a/drivers/gpu/drm/panthor/panthor_sched.c > +++ b/drivers/gpu/drm/panthor/panthor_sched.c > @@ -2942,6 +2942,7 @@ queue_run_job(struct drm_sched_job *sched_job) > pm_runtime_get(ptdev->base.dev); > sched->pm.has_ref = true; > } > + panthor_devfreq_record_busy(sched->ptdev); > } > > /* Update the last fence. */ Pushed to drm-misc-next Thanks, Steve
diff --git a/drivers/gpu/drm/panthor/panthor_sched.c b/drivers/gpu/drm/panthor/panthor_sched.c index 951ff7e63ea8..e7afaa1ad8dc 100644 --- a/drivers/gpu/drm/panthor/panthor_sched.c +++ b/drivers/gpu/drm/panthor/panthor_sched.c @@ -2942,6 +2942,7 @@ queue_run_job(struct drm_sched_job *sched_job) pm_runtime_get(ptdev->base.dev); sched->pm.has_ref = true; } + panthor_devfreq_record_busy(sched->ptdev); } /* Update the last fence. */
If a queue is already assigned to the hardware, then a newly submitted job can start straight away without waiting for the tick. However in this case the devfreq infrastructure isn't notified that the GPU is busy. By the time the tick happens the job might well have finished and no time will be accounted for the GPU being busy. Fix this by recording the GPU as busy directly in queue_run_job() in the case where there is a CSG assigned and therefore we just ring the doorbell. Fixes: de8548813824 ("drm/panthor: Add the scheduler logical block") Signed-off-by: Steven Price <steven.price@arm.com> --- drivers/gpu/drm/panthor/panthor_sched.c | 1 + 1 file changed, 1 insertion(+)