Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) client-ip=23.128.96.18;
From:   Rob Clark <robdclark@gmail.com>
To:     dri-devel@lists.freedesktop.org
Cc:     Rob Clark <robdclark@chromium.org>,
        freedreno@lists.freedesktop.org (open list:DRM DRIVER FOR MSM ADRENO
        GPU), Jordan Crouse <jordan@cosmicpenguin.net>,
        "Kristian H. Kristensen" <hoegsberg@google.com>,
        linux-arm-msm@vger.kernel.org (open list:DRM DRIVER FOR MSM ADRENO GPU),
        linux-kernel@vger.kernel.org (open list)
Subject: [PATCH 0/4] drm/msm: Shrinker (and related) fixes
Date:   Wed, 31 Mar 2021 15:16:25 -0700
Message-Id: <20210331221630.488498-1-robdclark@gmail.com>
MIME-Version: 1.0
Content-Transfer-Encoding: 8bit
Precedence: bulk

From: Rob Clark <robdclark@chromium.org>

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(-)

-- 
2.30.2