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    • Evan Quan's avatar
      drm/amd/powerplay: a quick fix for the deadlock issue below · 2ac0d686
      Evan Quan authored
      NFO: task ocltst:2028 blocked for more than 120 seconds.
           Tainted: G           OE     5.0.0-37-generic #40~18.04.1-Ubuntu
      echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
      cltst          D    0  2028   2026 0x00000000
      all Trace:
      __schedule+0x2c0/0x870
      schedule+0x2c/0x70
      schedule_preempt_disabled+0xe/0x10
      __mutex_lock.isra.9+0x26d/0x4e0
      __mutex_lock_slowpath+0x13/0x20
      ? __mutex_lock_slowpath+0x13/0x20
      mutex_lock+0x2f/0x40
      amdgpu_dpm_set_powergating_by_smu+0x64/0xe0 [amdgpu]
      gfx_v8_0_enable_gfx_static_mg_power_gating+0x3c/0x70 [amdgpu]
      gfx_v8_0_set_powergating_state+0x66/0x260 [amdgpu]
      amdgpu_device_ip_set_powergating_state+0x62/0xb0 [amdgpu]
      pp_dpm_force_performance_level+0xe7/0x100 [amdgpu]
      amdgpu_set_dpm_forced_performance_level+0x129/0x330 [amdgpu]
      
      Fixes: a64c9e15 ("drm/amd/powerplay: cleanup the interfaces for powergate setting through SMU")
      Signed-off-by: default avatarEvan Quan <evan.quan@amd.com>
      Reported-by: default avatarRui Teng <Rui.Teng@amd.com>
      Acked-by: default avatarAlex Deucher <alexander.deucher@amd.com>
      Signed-off-by: default avatarAlex Deucher <alexander.deucher@amd.com>
      2ac0d686
  16. 14 Jan, 2020 1 commit