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    Subject[PATCH v2 0/7] Improve GPU Recovery
    Date

    Recently, I debugged a few device crashes which occured during recovery
    after a hangcheck timeout. It looks like there are a few things we can
    do to improve our chance at a successful gpu recovery.

    First one is to ensure that CX GDSC collapses which clears the internal
    states in gpu's CX domain. First 5 patches tries to handle this.

    Rest of the patches are to ensure that few internal blocks like CP, GMU
    and GBIF are halted properly before proceeding for a snapshot followed by
    recovery. Also, handle 'prepare slumber' hfi failure correctly. These
    are A6x specific improvements.

    Changes in v2:
    - Rebased on msm-next tip

    Akhil P Oommen (7):
    drm/msm: Remove unnecessary pm_runtime_get/put
    drm/msm: Correct pm_runtime votes in recover worker
    drm/msm: Fix cx collapse issue during recovery
    drm/msm: Ensure cx gdsc collapse during recovery
    arm64: dts: qcom: sc7280: Update gpu register list
    drm/msm/a6xx: Improve gpu recovery sequence
    drm/msm/a6xx: Handle GMU prepare-slumber hfi failure

    arch/arm64/boot/dts/qcom/sc7280.dtsi | 6 ++-
    drivers/gpu/drm/msm/adreno/a6xx.xml.h | 4 ++
    drivers/gpu/drm/msm/adreno/a6xx_gmu.c | 83 ++++++++++++++++++++++-------------
    drivers/gpu/drm/msm/adreno/a6xx_gpu.c | 36 +++++++++++++--
    drivers/gpu/drm/msm/msm_gpu.c | 9 ++--
    drivers/gpu/drm/msm/msm_gpu.h | 1 +
    drivers/gpu/drm/msm/msm_ringbuffer.c | 4 --
    7 files changed, 100 insertions(+), 43 deletions(-)

    --
    2.7.4

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