Hi, On Wed, Mar 31, 2021 at 3:14 PM Rob Clark <robdclark@xxxxxxxxx> wrote: > > From: Rob Clark <robdclark@xxxxxxxxxxxx> > > I've been spending some time looking into how things behave under high > memory pressure. The first patch is a random cleanup I noticed along > the way. The second improves the situation significantly when we are > getting shrinker called from many threads in parallel. And the last > two are $debugfs/gem fixes I needed so I could monitor the state of GEM > objects (ie. how many are active/purgable/purged) while triggering high > memory pressure. > > We could probably go a bit further with dropping the mm_lock in the > shrinker->scan() loop, but this is already a pretty big improvement. > The next step is probably actually to add support to unpin/evict > inactive objects. (We are part way there since we have already de- > coupled the iova lifetime from the pages lifetime, but there are a > few sharp corners to work through.) > > Rob Clark (4): > drm/msm: Remove unused freed llist node > drm/msm: Avoid mutex in shrinker_count() > drm/msm: Fix debugfs deadlock > drm/msm: Improved debugfs gem stats > > drivers/gpu/drm/msm/msm_debugfs.c | 14 ++---- > drivers/gpu/drm/msm/msm_drv.c | 4 ++ > drivers/gpu/drm/msm/msm_drv.h | 10 ++++- > drivers/gpu/drm/msm/msm_fb.c | 3 +- > drivers/gpu/drm/msm/msm_gem.c | 61 +++++++++++++++++++++----- > drivers/gpu/drm/msm/msm_gem.h | 58 +++++++++++++++++++++--- > drivers/gpu/drm/msm/msm_gem_shrinker.c | 17 +------ > 7 files changed, 122 insertions(+), 45 deletions(-) This makes a pretty big reduction in jankiness when under memory pressure and seems to work well for me. Tested-by: Douglas Anderson <dianders@xxxxxxxxxxxx> _______________________________________________ dri-devel mailing list dri-devel@xxxxxxxxxxxxxxxxxxxxx https://lists.freedesktop.org/mailman/listinfo/dri-devel
