linux-kernel - [PATCH v1 00/10] Support for GMU coredump and some related improvements

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Date:   Wed,  2 Mar 2022 22:57:26 +0530
From:   Akhil P Oommen <quic_akhilpo@...cinc.com>
To:     freedreno <freedreno@...ts.freedesktop.org>,
        dri-devel@...ts.freedesktop.org, linux-arm-msm@...r.kernel.org,
        Rob Clark <robdclark@...il.com>,
        Dmitry Baryshkov <dmitry.baryshkov@...aro.org>,
        Bjorn Andersson <bjorn.andersson@...aro.org>
Cc:     Abhinav Kumar <quic_abhinavk@...cinc.com>,
        AngeloGioacchino Del Regno 
        <angelogioacchino.delregno@...labora.com>,
        Christian König <christian.koenig@....com>,
        Dan Carpenter <dan.carpenter@...cle.com>,
        Daniel Vetter <daniel@...ll.ch>,
        David Airlie <airlied@...ux.ie>,
        Dmitry Osipenko <digetx@...il.com>,
        Douglas Anderson <dianders@...omium.org>,
        Emma Anholt <emma@...olt.net>,
        Jonathan Marek <jonathan@...ek.ca>,
        Jordan Crouse <jordan@...micpenguin.net>,
        Sean Paul <sean@...rly.run>,
        Stephen Boyd <swboyd@...omium.org>,
        Viresh Kumar <viresh.kumar@...aro.org>,
        Vladimir Lypak <vladimir.lypak@...il.com>,
        Wang Qing <wangqing@...o.com>,
        Yangtao Li <tiny.windzz@...il.com>,
        linux-kernel@...r.kernel.org
Subject: [PATCH v1 00/10] Support for GMU coredump and some related improvements

Major enhancement in this series is the support for a minimal gmu coredump
which can be captured inline instead of through our usual recover worker. It
is helpful in the case of gmu errors during gpu wake-up/suspend path and
helps to capture a snapshot of gmu before we do a suspend. I had to introduce
a lock to synchronize the crashstate because the runtime-suspend can happen
from an asynchronous RPM thread.

Apart from this, there are some improvements to gracefully handle the
gmu errors by propagating the error back to parent or by retrying. Also, a
few patches to fix some trivial bugs in the related code.


Akhil P Oommen (10):
  drm/msm/a6xx: Add helper to check smmu is stalled
  drm/msm/a6xx: Send NMI to gmu when it is hung
  drm/msm/a6xx: Avoid gmu lock in pm ops
  drm/msm/a6xx: Enhance debugging of gmu faults
  drm/msm: Do recovery on hw_init failure
  drm/msm/a6xx: Propagate OOB set error
  drm/msm/adreno: Retry on gpu resume failure
  drm/msm/a6xx: Remove clk votes on failure
  drm/msm: Remove pm_runtime_get() from msm_job_run()
  drm/msm/a6xx: Free gmu_debug crashstate bo

 drivers/gpu/drm/msm/adreno/a6xx_gmu.c       | 89 +++++++++++++++++++++++------
 drivers/gpu/drm/msm/adreno/a6xx_gmu.h       |  1 +
 drivers/gpu/drm/msm/adreno/a6xx_gpu.c       | 31 +++++++---
 drivers/gpu/drm/msm/adreno/a6xx_gpu.h       |  4 +-
 drivers/gpu/drm/msm/adreno/a6xx_gpu_state.c | 79 +++++++++++++++++++++----
 drivers/gpu/drm/msm/adreno/adreno_device.c  | 10 +++-
 drivers/gpu/drm/msm/adreno/adreno_gpu.c     | 10 +++-
 drivers/gpu/drm/msm/adreno/adreno_gpu.h     |  2 +
 drivers/gpu/drm/msm/msm_gpu.c               | 28 ++++++++-
 drivers/gpu/drm/msm/msm_gpu.h               | 11 ++--
 drivers/gpu/drm/msm/msm_ringbuffer.c        |  4 --
 11 files changed, 218 insertions(+), 51 deletions(-)

-- 
2.7.4