linux-kernel - [PATCH 00/14] drm/msm: de-struct

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Message-Id: <20201012020958.229288-1-robdclark@gmail.com>
Date:   Sun, 11 Oct 2020 19:09:27 -0700
From:   Rob Clark <robdclark@...il.com>
To:     dri-devel@...ts.freedesktop.org
Cc:     Daniel Vetter <daniel@...ll.ch>,
        Rob Clark <robdclark@...omium.org>,
        AngeloGioacchino Del Regno <kholk11@...il.com>,
        Brian Masney <masneyb@...tation.org>,
        Christophe JAILLET <christophe.jaillet@...adoo.fr>,
        Daniel Vetter <daniel.vetter@...ll.ch>,
        Emil Velikov <emil.velikov@...labora.com>,
        Eric Anholt <eric@...olt.net>,
        freedreno@...ts.freedesktop.org (open list:DRM DRIVER FOR MSM ADRENO
        GPU), Harigovindan P <harigovi@...eaurora.org>,
        Jonathan Marek <jonathan@...ek.ca>,
        Jordan Crouse <jcrouse@...eaurora.org>,
        linaro-mm-sig@...ts.linaro.org (moderated list:DMA BUFFER SHARING
        FRAMEWORK),
        linux-arm-msm@...r.kernel.org (open list:DRM DRIVER FOR MSM ADRENO GPU),
        linux-kernel@...r.kernel.org (open list),
        linux-media@...r.kernel.org (open list:DMA BUFFER SHARING FRAMEWORK),
        Liviu Dudau <liviu.dudau@....com>,
        Matthias Kaehlcke <mka@...omium.org>,
        Rajendra Nayak <rnayak@...eaurora.org>,
        Sam Ravnborg <sam@...nborg.org>,
        Sharat Masetty <smasetty@...eaurora.org>,
        Thomas Zimmermann <tzimmermann@...e.de>
Subject: [PATCH 00/14] drm/msm: de-struct_mutex-ification

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

This doesn't remove *all* the struct_mutex, but it covers the worst
of it, ie. shrinker/madvise/free/retire.  The submit path still uses
struct_mutex, but it still needs *something* serialize a portion of
the submit path, and lock_stat mostly just shows the lock contention
there being with other submits.  And there are a few other bits of
struct_mutex usage in less critical paths (debugfs, etc).  But this
seems like a reasonable step in the right direction.

v2: teach lockdep about shrinker locking patters (danvet) and
    convert to obj->resv locking (danvet)

Rob Clark (22):
  drm/msm/gem: Add obj->lock wrappers
  drm/msm/gem: Rename internal get_iova_locked helper
  drm/msm/gem: Move prototypes to msm_gem.h
  drm/msm/gem: Add some _locked() helpers
  drm/msm/gem: Move locking in shrinker path
  drm/msm/submit: Move copy_from_user ahead of locking bos
  drm/msm: Do rpm get sooner in the submit path
  drm/msm/gem: Switch over to obj->resv for locking
  drm/msm: Use correct drm_gem_object_put() in fail case
  drm/msm: Drop chatty trace
  drm/msm: Move update_fences()
  drm/msm: Add priv->mm_lock to protect active/inactive lists
  drm/msm: Document and rename preempt_lock
  drm/msm: Protect ring->submits with it's own lock
  drm/msm: Refcount submits
  drm/msm: Remove obj->gpu
  drm/msm: Drop struct_mutex from the retire path
  drm/msm: Drop struct_mutex in free_object() path
  drm/msm: remove msm_gem_free_work
  drm/msm: drop struct_mutex in madvise path
  drm/msm: Drop struct_mutex in shrinker path
  drm/msm: Don't implicit-sync if only a single ring

 drivers/gpu/drm/msm/adreno/a5xx_gpu.c     |   4 +-
 drivers/gpu/drm/msm/adreno/a5xx_preempt.c |  12 +-
 drivers/gpu/drm/msm/adreno/a6xx_gpu.c     |   4 +-
 drivers/gpu/drm/msm/disp/mdp4/mdp4_crtc.c |   1 +
 drivers/gpu/drm/msm/disp/mdp5/mdp5_crtc.c |   1 +
 drivers/gpu/drm/msm/dsi/dsi_host.c        |   1 +
 drivers/gpu/drm/msm/msm_debugfs.c         |   7 +
 drivers/gpu/drm/msm/msm_drv.c             |  21 +-
 drivers/gpu/drm/msm/msm_drv.h             |  73 ++-----
 drivers/gpu/drm/msm/msm_fbdev.c           |   1 +
 drivers/gpu/drm/msm/msm_gem.c             | 245 ++++++++++------------
 drivers/gpu/drm/msm/msm_gem.h             | 131 ++++++++++--
 drivers/gpu/drm/msm/msm_gem_shrinker.c    |  81 +++----
 drivers/gpu/drm/msm/msm_gem_submit.c      | 154 +++++++++-----
 drivers/gpu/drm/msm/msm_gpu.c             |  98 +++++----
 drivers/gpu/drm/msm/msm_gpu.h             |   5 +-
 drivers/gpu/drm/msm/msm_ringbuffer.c      |   3 +-
 drivers/gpu/drm/msm/msm_ringbuffer.h      |  13 +-
 18 files changed, 459 insertions(+), 396 deletions(-)

-- 
2.26.2