On Thu, 04 Jun 2026 18:35:22 +0100 Adrián Larumbe <[email protected]> wrote:
> Since the moment we call drm_dev_register() the device should be in a > position to accept jobs, so it's best if the shrinker is already > initialized by then. > > On top of that, make shrinker functions take an panfrost_device pointer > like other functions in the same sequence and rename them accordingly. > > Essentially mimic the init/fini behaviour in Panthor. > > Signed-off-by: Adrián Larumbe <[email protected]> > --- > drivers/gpu/drm/panfrost/panfrost_device.c | 7 +++++++ > drivers/gpu/drm/panfrost/panfrost_drv.c | 6 ------ > drivers/gpu/drm/panfrost/panfrost_gem.h | 4 ++-- > drivers/gpu/drm/panfrost/panfrost_gem_shrinker.c | 8 ++------ > 4 files changed, 11 insertions(+), 14 deletions(-) > > diff --git a/drivers/gpu/drm/panfrost/panfrost_device.c > b/drivers/gpu/drm/panfrost/panfrost_device.c > index 7fed22d555a5..87b372c9e675 100644 > --- a/drivers/gpu/drm/panfrost/panfrost_device.c > +++ b/drivers/gpu/drm/panfrost/panfrost_device.c > @@ -282,9 +282,15 @@ int panfrost_device_init(struct panfrost_device *pfdev) > if (err) > goto out_job; > > + err = panfrost_gem_shrinker_init(pfdev); > + if (err) > + goto out_perfcnt; > + > panfrost_gem_init(pfdev); It feels weird to have the GEM shrinker initialized before the GEM component. Also, I'd consider the shrinker part of the GEM logic, so maybe call panfrost_gem_shrinker_init() from panfrost_gem_init() and change the prototype of panfrost_gem_init() to return an int. > > return 0; > +out_perfcnt: > + panfrost_perfcnt_fini(pfdev); > out_job: > panfrost_jm_fini(pfdev); > out_mmu: > @@ -306,6 +312,7 @@ int panfrost_device_init(struct panfrost_device *pfdev) > > void panfrost_device_fini(struct panfrost_device *pfdev) > { > + panfrost_gem_shrinker_fini(pfdev); > panfrost_perfcnt_fini(pfdev); > panfrost_jm_fini(pfdev); > panfrost_mmu_fini(pfdev); > diff --git a/drivers/gpu/drm/panfrost/panfrost_drv.c > b/drivers/gpu/drm/panfrost/panfrost_drv.c > index cb8e5015847f..2d4b6aa95c66 100644 > --- a/drivers/gpu/drm/panfrost/panfrost_drv.c > +++ b/drivers/gpu/drm/panfrost/panfrost_drv.c > @@ -1000,14 +1000,9 @@ static int panfrost_probe(struct platform_device *pdev) > if (err < 0) > goto err_out1; > > - err = panfrost_gem_shrinker_init(&pfdev->base); > - if (err) > - goto err_out2; > > return 0; > > -err_out2: > - drm_dev_unregister(&pfdev->base); > err_out1: > pm_runtime_disable(pfdev->base.dev); > panfrost_device_fini(pfdev); > @@ -1021,7 +1016,6 @@ static void panfrost_remove(struct platform_device > *pdev) > struct panfrost_device *pfdev = platform_get_drvdata(pdev); > > drm_dev_unregister(&pfdev->base); > - panfrost_gem_shrinker_cleanup(&pfdev->base); > > pm_runtime_get_sync(pfdev->base.dev); > pm_runtime_disable(pfdev->base.dev); > diff --git a/drivers/gpu/drm/panfrost/panfrost_gem.h > b/drivers/gpu/drm/panfrost/panfrost_gem.h > index 79d4377019e9..323a1aee255e 100644 > --- a/drivers/gpu/drm/panfrost/panfrost_gem.h > +++ b/drivers/gpu/drm/panfrost/panfrost_gem.h > @@ -154,8 +154,8 @@ panfrost_gem_mapping_get(struct panfrost_gem_object *bo, > void panfrost_gem_mapping_put(struct panfrost_gem_mapping *mapping); > void panfrost_gem_teardown_mappings_locked(struct panfrost_gem_object *bo); > > -int panfrost_gem_shrinker_init(struct drm_device *dev); > -void panfrost_gem_shrinker_cleanup(struct drm_device *dev); > +int panfrost_gem_shrinker_init(struct panfrost_device *pfdev); > +void panfrost_gem_shrinker_fini(struct panfrost_device *pfdev); > > void panfrost_gem_set_label(struct drm_gem_object *obj, const char *label); > int panfrost_gem_sync(struct drm_gem_object *obj, u32 type, > diff --git a/drivers/gpu/drm/panfrost/panfrost_gem_shrinker.c > b/drivers/gpu/drm/panfrost/panfrost_gem_shrinker.c > index 2fe967a90bcb..fefae87535d6 100644 > --- a/drivers/gpu/drm/panfrost/panfrost_gem_shrinker.c > +++ b/drivers/gpu/drm/panfrost/panfrost_gem_shrinker.c > @@ -95,10 +95,8 @@ panfrost_gem_shrinker_scan(struct shrinker *shrinker, > struct shrink_control *sc) > * > * This function registers and sets up the panfrost shrinker. > */ > -int panfrost_gem_shrinker_init(struct drm_device *dev) > +int panfrost_gem_shrinker_init(struct panfrost_device *pfdev) > { > - struct panfrost_device *pfdev = to_panfrost_device(dev); > - > pfdev->shrinker = shrinker_alloc(0, "drm-panfrost"); > if (!pfdev->shrinker) > return -ENOMEM; > @@ -118,10 +116,8 @@ int panfrost_gem_shrinker_init(struct drm_device *dev) > * > * This function unregisters the panfrost shrinker. > */ > -void panfrost_gem_shrinker_cleanup(struct drm_device *dev) > +void panfrost_gem_shrinker_fini(struct panfrost_device *pfdev) > { > - struct panfrost_device *pfdev = to_panfrost_device(dev); > - > if (pfdev->shrinker) > shrinker_free(pfdev->shrinker); > } >
