lists.openwall.net   lists  /  announce  owl-users  owl-dev  john-users  john-dev  passwdqc-users  yescrypt  popa3d-users  /  oss-security  kernel-hardening  musl  sabotage  tlsify  passwords  /  crypt-dev  xvendor  /  Bugtraq  Full-Disclosure  linux-kernel  linux-netdev  linux-ext4  linux-hardening  linux-cve-announce  PHC 
Open Source and information security mailing list archives
 
Hash Suite: Windows password security audit tool. GUI, reports in PDF.
[<prev] [next>] [thread-next>] [day] [month] [year] [list]
Message-Id: <20210331221630.488498-1-robdclark@gmail.com>
Date:   Wed, 31 Mar 2021 15:16:25 -0700
From:   Rob Clark <robdclark@...il.com>
To:     dri-devel@...ts.freedesktop.org
Cc:     Rob Clark <robdclark@...omium.org>,
        freedreno@...ts.freedesktop.org (open list:DRM DRIVER FOR MSM ADRENO
        GPU), Jordan Crouse <jordan@...micpenguin.net>,
        "Kristian H. Kristensen" <hoegsberg@...gle.com>,
        linux-arm-msm@...r.kernel.org (open list:DRM DRIVER FOR MSM ADRENO GPU),
        linux-kernel@...r.kernel.org (open list)
Subject: [PATCH 0/4] drm/msm: Shrinker (and related) fixes

From: Rob Clark <robdclark@...omium.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

Powered by blists - more mailing lists

Powered by Openwall GNU/*/Linux Powered by OpenVZ