| Message ID | 20190725011003.30837-2-robh@kernel.org (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | drm/panfrost: Add heap and no execute buffer allocation | expand |
On 25/07/2019 02:09, Rob Herring wrote: > Panfrost has a need for pages allocated on demand via GPU page faults. > When releasing the pages, the only thing preventing using > drm_gem_put_pages() is needing to skip over unpopulated pages, so allow > for skipping over NULL struct page pointers. > > Cc: Maarten Lankhorst <maarten.lankhorst@linux.intel.com> > Cc: Maxime Ripard <maxime.ripard@bootlin.com> > Cc: Sean Paul <sean@poorly.run> > Cc: David Airlie <airlied@linux.ie> > Cc: Daniel Vetter <daniel@ffwll.ch> > Cc: dri-devel@lists.freedesktop.org > Signed-off-by: Rob Herring <robh@kernel.org> LGTM: Reviewed-by: Steven Price <steven.price@arm.com> > --- > v2: > - new patch > > drivers/gpu/drm/drm_gem.c | 3 +++ > 1 file changed, 3 insertions(+) > > diff --git a/drivers/gpu/drm/drm_gem.c b/drivers/gpu/drm/drm_gem.c > index 243f43d70f42..db373c945f16 100644 > --- a/drivers/gpu/drm/drm_gem.c > +++ b/drivers/gpu/drm/drm_gem.c > @@ -633,6 +633,9 @@ void drm_gem_put_pages(struct drm_gem_object *obj, struct page **pages, > > pagevec_init(&pvec); > for (i = 0; i < npages; i++) { > + if (!pages[i]) > + continue; > + > if (dirty) > set_page_dirty(pages[i]); > > -- > 2.20.1 > _______________________________________________ > dri-devel mailing list > dri-devel@lists.freedesktop.org > https://lists.freedesktop.org/mailman/listinfo/dri-devel >
diff --git a/drivers/gpu/drm/drm_gem.c b/drivers/gpu/drm/drm_gem.c index 243f43d70f42..db373c945f16 100644 --- a/drivers/gpu/drm/drm_gem.c +++ b/drivers/gpu/drm/drm_gem.c @@ -633,6 +633,9 @@ void drm_gem_put_pages(struct drm_gem_object *obj, struct page **pages, pagevec_init(&pvec); for (i = 0; i < npages; i++) { + if (!pages[i]) + continue; + if (dirty) set_page_dirty(pages[i]);
Panfrost has a need for pages allocated on demand via GPU page faults. When releasing the pages, the only thing preventing using drm_gem_put_pages() is needing to skip over unpopulated pages, so allow for skipping over NULL struct page pointers. Cc: Maarten Lankhorst <maarten.lankhorst@linux.intel.com> Cc: Maxime Ripard <maxime.ripard@bootlin.com> Cc: Sean Paul <sean@poorly.run> Cc: David Airlie <airlied@linux.ie> Cc: Daniel Vetter <daniel@ffwll.ch> Cc: dri-devel@lists.freedesktop.org Signed-off-by: Rob Herring <robh@kernel.org> --- v2: - new patch drivers/gpu/drm/drm_gem.c | 3 +++ 1 file changed, 3 insertions(+) -- 2.20.1