[Intel-gfx] [PATCH] drm/i915/panel: Reduce race window between bl_update_status and bl_enable

[Intel-gfx] [PATCH] drm/i915/panel: Reduce race window between bl_update_status and bl_enable

[Sean Paul]

From: Sean Paul <seanpaul@chromium.org>

If the backlight is updated while the panel is being enabled, the value
from userspace (which is stored in panel->backlight.device->props.brightness)
can be replaced by the hardware's minimum level. There's really no good
way to tell if this is happening in enable_backlight() since
props.brightness can be initialized to the same value as is being set by
userspace. So we'll try to reduce the race window as much as possible.

Signed-off-by: Sean Paul <seanpaul@chromium.org>
---

I don't think there's any way to eliminate this race since grabbing
bd->op_lock in panel_enable would cause a lock inversion deadlock with
the connection_mutex lock in backlight_device_update_status

Suggestions very much welcome!

 drivers/gpu/drm/i915/display/intel_panel.c | 14 ++++++++++++++
 1 file changed, 14 insertions(+)

diff --git a/drivers/gpu/drm/i915/display/intel_panel.c b/drivers/gpu/drm/i915/display/intel_panel.c
index 3c5056dbf607..abdfb9cc281b 100644
--- a/drivers/gpu/drm/i915/display/intel_panel.c
+++ b/drivers/gpu/drm/i915/display/intel_panel.c
@@ -1285,8 +1285,22 @@ static int intel_backlight_device_update_status(struct backlight_device *bd)
 	struct intel_connector *connector = bl_get_data(bd);
 	struct intel_panel *panel = &connector->panel;
 	struct drm_device *dev = connector->base.dev;
+	int value;
+
+	/*
+	 * Before we attempt to grab the connection mutex, cache the incoming
+	 * brightness value. If we're in the middle of a modeset,
+	 * intel_panel_enable_backlight will be called and could pave over
+	 * props.brightness. This is still racey, but the race window should be
+	 * significantly smaller and reflects the inherent raceyness of the
+	 * updating props.brightness outside of bd->op_lock.
+	 */
+	value = bd->props.brightness;
 
 	drm_modeset_lock(&dev->mode_config.connection_mutex, NULL);
+
+	bd->props.brightness = value;
+
 	DRM_DEBUG_KMS("updating intel_backlight, brightness=%d/%d\n",
 		      bd->props.brightness, bd->props.max_brightness);
 	intel_panel_set_backlight(connector->base.state, bd->props.brightness,
-- 
Sean Paul, Software Engineer, Google / Chromium OS

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[Intel-gfx] ✗ Fi.CI.CHECKPATCH: warning for drm/i915/panel: Reduce race window between bl_update_status and bl_enable

[Patchwork]

== Series Details ==

Series: drm/i915/panel: Reduce race window between bl_update_status and bl_enable
URL   : https://patchwork.freedesktop.org/series/77873/
State : warning

== Summary ==

$ dim checkpatch origin/drm-tip
bca376137784 drm/i915/panel: Reduce race window between bl_update_status and bl_enable
-:8: WARNING:COMMIT_LOG_LONG_LINE: Possible unwrapped commit description (prefer a maximum 75 chars per line)
#8: 
from userspace (which is stored in panel->backlight.device->props.brightness)

total: 0 errors, 1 warnings, 0 checks, 22 lines checked

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[Intel-gfx] ✓ Fi.CI.BAT: success for drm/i915/panel: Reduce race window between bl_update_status and bl_enable

[Patchwork]

== Series Details ==

Series: drm/i915/panel: Reduce race window between bl_update_status and bl_enable
URL   : https://patchwork.freedesktop.org/series/77873/
State : success

== Summary ==

CI Bug Log - changes from CI_DRM_8565 -> Patchwork_17831
====================================================

Summary
-------

  **SUCCESS**

  No regressions found.

  External URL: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_17831/index.html

Known issues
------------

  Here are the changes found in Patchwork_17831 that come from known issues:

### IGT changes ###

#### Warnings ####

  * igt@i915_pm_rpm@module-reload:
    - fi-kbl-x1275:       [FAIL][1] ([i915#62]) -> [SKIP][2] ([fdo#109271])
   [1]: https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_8565/fi-kbl-x1275/igt@i915_pm_rpm@module-reload.html
   [2]: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_17831/fi-kbl-x1275/igt@i915_pm_rpm@module-reload.html

  
  [fdo#109271]: https://bugs.freedesktop.org/show_bug.cgi?id=109271
  [i915#62]: https://gitlab.freedesktop.org/drm/intel/issues/62


Participating hosts (50 -> 45)
------------------------------

  Additional (1): fi-kbl-7560u 
  Missing    (6): fi-ilk-m540 fi-hsw-4200u fi-byt-squawks fi-bsw-cyan fi-byt-clapper fi-bdw-samus 


Build changes
-------------

  * Linux: CI_DRM_8565 -> Patchwork_17831

  CI-20190529: 20190529
  CI_DRM_8565: 267bdbf5f8ba7c0931eb6c11a3b9eb893b10fead @ git://anongit.freedesktop.org/gfx-ci/linux
  IGT_5689: 587cbed206689abbad60689d4a32bf9caf0cc124 @ git://anongit.freedesktop.org/xorg/app/intel-gpu-tools
  Patchwork_17831: bca3761377846e842068f30f26ae07d5d8b0e42b @ git://anongit.freedesktop.org/gfx-ci/linux


== Linux commits ==

bca376137784 drm/i915/panel: Reduce race window between bl_update_status and bl_enable

== Logs ==

For more details see: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_17831/index.html
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[Intel-gfx] ✓ Fi.CI.IGT: success for drm/i915/panel: Reduce race window between bl_update_status and bl_enable

[Patchwork]

== Series Details ==

Series: drm/i915/panel: Reduce race window between bl_update_status and bl_enable
URL   : https://patchwork.freedesktop.org/series/77873/
State : success

== Summary ==

CI Bug Log - changes from CI_DRM_8565_full -> Patchwork_17831_full
====================================================

Summary
-------

  **SUCCESS**

  No regressions found.

  

Known issues
------------

  Here are the changes found in Patchwork_17831_full that come from known issues:

### IGT changes ###

#### Issues hit ####

  * igt@gem_ctx_persistence@engines-mixed-process@bcs0:
    - shard-skl:          [PASS][1] -> [FAIL][2] ([i915#1528])
   [1]: https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_8565/shard-skl7/igt@gem_ctx_persistence@engines-mixed-process@bcs0.html
   [2]: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_17831/shard-skl3/igt@gem_ctx_persistence@engines-mixed-process@bcs0.html

  * igt@gen9_exec_parse@allowed-all:
    - shard-kbl:          [PASS][3] -> [DMESG-WARN][4] ([i915#1436] / [i915#716])
   [3]: https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_8565/shard-kbl2/igt@gen9_exec_parse@allowed-all.html
   [4]: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_17831/shard-kbl6/igt@gen9_exec_parse@allowed-all.html

  * igt@kms_cursor_legacy@2x-cursor-vs-flip-legacy:
    - shard-hsw:          [PASS][5] -> [INCOMPLETE][6] ([i915#1926] / [i915#61])
   [5]: https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_8565/shard-hsw2/igt@kms_cursor_legacy@2x-cursor-vs-flip-legacy.html
   [6]: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_17831/shard-hsw4/igt@kms_cursor_legacy@2x-cursor-vs-flip-legacy.html

  * igt@kms_cursor_legacy@cursorb-vs-flipa-toggle:
    - shard-glk:          [PASS][7] -> [DMESG-FAIL][8] ([i915#1925] / [i915#1926])
   [7]: https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_8565/shard-glk1/igt@kms_cursor_legacy@cursorb-vs-flipa-toggle.html
   [8]: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_17831/shard-glk6/igt@kms_cursor_legacy@cursorb-vs-flipa-toggle.html

  * igt@kms_draw_crc@fill-fb:
    - shard-apl:          [PASS][9] -> [FAIL][10] ([i915#95])
   [9]: https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_8565/shard-apl8/igt@kms_draw_crc@fill-fb.html
   [10]: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_17831/shard-apl7/igt@kms_draw_crc@fill-fb.html

  * igt@kms_hdr@bpc-switch:
    - shard-skl:          [PASS][11] -> [FAIL][12] ([i915#1188])
   [11]: https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_8565/shard-skl7/igt@kms_hdr@bpc-switch.html
   [12]: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_17831/shard-skl3/igt@kms_hdr@bpc-switch.html

  * igt@kms_pipe_crc_basic@suspend-read-crc-pipe-b:
    - shard-apl:          [PASS][13] -> [DMESG-WARN][14] ([i915#180])
   [13]: https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_8565/shard-apl2/igt@kms_pipe_crc_basic@suspend-read-crc-pipe-b.html
   [14]: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_17831/shard-apl1/igt@kms_pipe_crc_basic@suspend-read-crc-pipe-b.html

  * igt@kms_plane@plane-panning-bottom-right-suspend-pipe-b-planes:
    - shard-kbl:          [PASS][15] -> [DMESG-WARN][16] ([i915#180]) +1 similar issue
   [15]: https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_8565/shard-kbl2/igt@kms_plane@plane-panning-bottom-right-suspend-pipe-b-planes.html
   [16]: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_17831/shard-kbl6/igt@kms_plane@plane-panning-bottom-right-suspend-pipe-b-planes.html

  * igt@kms_plane_alpha_blend@pipe-b-coverage-7efc:
    - shard-skl:          [PASS][17] -> [FAIL][18] ([fdo#108145] / [i915#265]) +1 similar issue
   [17]: https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_8565/shard-skl1/igt@kms_plane_alpha_blend@pipe-b-coverage-7efc.html
   [18]: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_17831/shard-skl7/igt@kms_plane_alpha_blend@pipe-b-coverage-7efc.html

  * igt@kms_psr2_su@frontbuffer:
    - shard-iclb:         [PASS][19] -> [SKIP][20] ([fdo#109642] / [fdo#111068])
   [19]: https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_8565/shard-iclb2/igt@kms_psr2_su@frontbuffer.html
   [20]: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_17831/shard-iclb1/igt@kms_psr2_su@frontbuffer.html

  * igt@kms_psr@psr2_primary_render:
    - shard-iclb:         [PASS][21] -> [SKIP][22] ([fdo#109441])
   [21]: https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_8565/shard-iclb2/igt@kms_psr@psr2_primary_render.html
   [22]: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_17831/shard-iclb1/igt@kms_psr@psr2_primary_render.html

  * igt@perf@stress-open-close:
    - shard-kbl:          [PASS][23] -> [INCOMPLETE][24] ([i915#1847] / [i915#1855])
   [23]: https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_8565/shard-kbl6/igt@perf@stress-open-close.html
   [24]: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_17831/shard-kbl7/igt@perf@stress-open-close.html

  
#### Possible fixes ####

  * igt@kms_big_fb@x-tiled-64bpp-rotate-180:
    - shard-glk:          [FAIL][25] ([i915#1119] / [i915#118] / [i915#95]) -> [PASS][26] +1 similar issue
   [25]: https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_8565/shard-glk8/igt@kms_big_fb@x-tiled-64bpp-rotate-180.html
   [26]: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_17831/shard-glk2/igt@kms_big_fb@x-tiled-64bpp-rotate-180.html

  * igt@kms_cursor_edge_walk@pipe-c-256x256-right-edge:
    - shard-glk:          [INCOMPLETE][27] ([i915#1927] / [i915#58] / [k.org#198133]) -> [PASS][28]
   [27]: https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_8565/shard-glk1/igt@kms_cursor_edge_walk@pipe-c-256x256-right-edge.html
   [28]: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_17831/shard-glk1/igt@kms_cursor_edge_walk@pipe-c-256x256-right-edge.html

  * {igt@kms_flip@flip-vs-suspend@a-dp1}:
    - shard-apl:          [DMESG-WARN][29] ([i915#180]) -> [PASS][30] +4 similar issues
   [29]: https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_8565/shard-apl1/igt@kms_flip@flip-vs-suspend@a-dp1.html
   [30]: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_17831/shard-apl2/igt@kms_flip@flip-vs-suspend@a-dp1.html

  * {igt@kms_flip@flip-vs-suspend@a-edp1}:
    - shard-skl:          [INCOMPLETE][31] ([i915#198]) -> [PASS][32]
   [31]: https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_8565/shard-skl10/igt@kms_flip@flip-vs-suspend@a-edp1.html
   [32]: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_17831/shard-skl10/igt@kms_flip@flip-vs-suspend@a-edp1.html

  * {igt@kms_flip@plain-flip-ts-check-interruptible@b-hdmi-a1}:
    - shard-glk:          [FAIL][33] ([i915#1928]) -> [PASS][34]
   [33]: https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_8565/shard-glk8/igt@kms_flip@plain-flip-ts-check-interruptible@b-hdmi-a1.html
   [34]: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_17831/shard-glk2/igt@kms_flip@plain-flip-ts-check-interruptible@b-hdmi-a1.html

  * igt@kms_plane_alpha_blend@pipe-c-coverage-7efc:
    - shard-skl:          [FAIL][35] ([fdo#108145] / [i915#265]) -> [PASS][36] +1 similar issue
   [35]: https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_8565/shard-skl6/igt@kms_plane_alpha_blend@pipe-c-coverage-7efc.html
   [36]: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_17831/shard-skl3/igt@kms_plane_alpha_blend@pipe-c-coverage-7efc.html

  * igt@kms_psr@psr2_cursor_mmap_cpu:
    - shard-iclb:         [SKIP][37] ([fdo#109441]) -> [PASS][38] +5 similar issues
   [37]: https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_8565/shard-iclb5/igt@kms_psr@psr2_cursor_mmap_cpu.html
   [38]: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_17831/shard-iclb2/igt@kms_psr@psr2_cursor_mmap_cpu.html

  * igt@kms_setmode@basic:
    - shard-apl:          [FAIL][39] ([i915#31]) -> [PASS][40]
   [39]: https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_8565/shard-apl8/igt@kms_setmode@basic.html
   [40]: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_17831/shard-apl7/igt@kms_setmode@basic.html

  * {igt@perf@blocking-parameterized}:
    - shard-iclb:         [FAIL][41] ([i915#1542]) -> [PASS][42]
   [41]: https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_8565/shard-iclb3/igt@perf@blocking-parameterized.html
   [42]: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_17831/shard-iclb6/igt@perf@blocking-parameterized.html
    - shard-hsw:          [FAIL][43] ([i915#1542]) -> [PASS][44]
   [43]: https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_8565/shard-hsw6/igt@perf@blocking-parameterized.html
   [44]: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_17831/shard-hsw1/igt@perf@blocking-parameterized.html

  
#### Warnings ####

  * igt@i915_pm_dc@dc3co-vpb-simulation:
    - shard-iclb:         [SKIP][45] ([i915#658]) -> [SKIP][46] ([i915#588])
   [45]: https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_8565/shard-iclb5/igt@i915_pm_dc@dc3co-vpb-simulation.html
   [46]: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_17831/shard-iclb2/igt@i915_pm_dc@dc3co-vpb-simulation.html

  * igt@i915_pm_dc@dc6-psr:
    - shard-tglb:         [SKIP][47] ([i915#468]) -> [FAIL][48] ([i915#454])
   [47]: https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_8565/shard-tglb2/igt@i915_pm_dc@dc6-psr.html
   [48]: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_17831/shard-tglb3/igt@i915_pm_dc@dc6-psr.html

  * igt@kms_content_protection@atomic:
    - shard-apl:          [FAIL][49] ([fdo#110321] / [fdo#110336]) -> [TIMEOUT][50] ([i915#1319])
   [49]: https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_8565/shard-apl6/igt@kms_content_protection@atomic.html
   [50]: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_17831/shard-apl4/igt@kms_content_protection@atomic.html

  * igt@kms_content_protection@legacy:
    - shard-apl:          [TIMEOUT][51] ([i915#1319]) -> [TIMEOUT][52] ([i915#1319] / [i915#1635])
   [51]: https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_8565/shard-apl6/igt@kms_content_protection@legacy.html
   [52]: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_17831/shard-apl4/igt@kms_content_protection@legacy.html

  * igt@kms_content_protection@lic:
    - shard-apl:          [FAIL][53] ([fdo#110321]) -> [TIMEOUT][54] ([i915#1319])
   [53]: https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_8565/shard-apl4/igt@kms_content_protection@lic.html
   [54]: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_17831/shard-apl8/igt@kms_content_protection@lic.html

  * igt@kms_cursor_legacy@cursora-vs-flipb-toggle:
    - shard-glk:          [DMESG-FAIL][55] ([i915#1925] / [i915#1926]) -> [DMESG-WARN][56] ([i915#1926])
   [55]: https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_8565/shard-glk2/igt@kms_cursor_legacy@cursora-vs-flipb-toggle.html
   [56]: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_17831/shard-glk1/igt@kms_cursor_legacy@cursora-vs-flipb-toggle.html

  * igt@kms_plane_alpha_blend@pipe-a-constant-alpha-max:
    - shard-apl:          [FAIL][57] ([fdo#108145] / [i915#265] / [i915#95]) -> [FAIL][58] ([fdo#108145] / [i915#265])
   [57]: https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_8565/shard-apl2/igt@kms_plane_alpha_blend@pipe-a-constant-alpha-max.html
   [58]: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_17831/shard-apl1/igt@kms_plane_alpha_blend@pipe-a-constant-alpha-max.html

  
  {name}: This element is suppressed. This means it is ignored when computing
          the status of the difference (SUCCESS, WARNING, or FAILURE).

  [fdo#108145]: https://bugs.freedesktop.org/show_bug.cgi?id=108145
  [fdo#109441]: https://bugs.freedesktop.org/show_bug.cgi?id=109441
  [fdo#109642]: https://bugs.freedesktop.org/show_bug.cgi?id=109642
  [fdo#110321]: https://bugs.freedesktop.org/show_bug.cgi?id=110321
  [fdo#110336]: https://bugs.freedesktop.org/show_bug.cgi?id=110336
  [fdo#111068]: https://bugs.freedesktop.org/show_bug.cgi?id=111068
  [i915#1119]: https://gitlab.freedesktop.org/drm/intel/issues/1119
  [i915#118]: https://gitlab.freedesktop.org/drm/intel/issues/118
  [i915#1188]: https://gitlab.freedesktop.org/drm/intel/issues/1188
  [i915#1319]: https://gitlab.freedesktop.org/drm/intel/issues/1319
  [i915#1436]: https://gitlab.freedesktop.org/drm/intel/issues/1436
  [i915#1528]: https://gitlab.freedesktop.org/drm/intel/issues/1528
  [i915#1542]: https://gitlab.freedesktop.org/drm/intel/issues/1542
  [i915#1635]: https://gitlab.freedesktop.org/drm/intel/issues/1635
  [i915#180]: https://gitlab.freedesktop.org/drm/intel/issues/180
  [i915#1847]: https://gitlab.freedesktop.org/drm/intel/issues/1847
  [i915#1855]: https://gitlab.freedesktop.org/drm/intel/issues/1855
  [i915#1925]: https://gitlab.freedesktop.org/drm/intel/issues/1925
  [i915#1926]: https://gitlab.freedesktop.org/drm/intel/issues/1926
  [i915#1927]: https://gitlab.freedesktop.org/drm/intel/issues/1927
  [i915#1928]: https://gitlab.freedesktop.org/drm/intel/issues/1928
  [i915#198]: https://gitlab.freedesktop.org/drm/intel/issues/198
  [i915#265]: https://gitlab.freedesktop.org/drm/intel/issues/265
  [i915#31]: https://gitlab.freedesktop.org/drm/intel/issues/31
  [i915#454]: https://gitlab.freedesktop.org/drm/intel/issues/454
  [i915#468]: https://gitlab.freedesktop.org/drm/intel/issues/468
  [i915#58]: https://gitlab.freedesktop.org/drm/intel/issues/58
  [i915#588]: https://gitlab.freedesktop.org/drm/intel/issues/588
  [i915#61]: https://gitlab.freedesktop.org/drm/intel/issues/61
  [i915#658]: https://gitlab.freedesktop.org/drm/intel/issues/658
  [i915#716]: https://gitlab.freedesktop.org/drm/intel/issues/716
  [i915#79]: https://gitlab.freedesktop.org/drm/intel/issues/79
  [i915#95]: https://gitlab.freedesktop.org/drm/intel/issues/95
  [k.org#198133]: https://bugzilla.kernel.org/show_bug.cgi?id=198133


Participating hosts (11 -> 11)
------------------------------

  No changes in participating hosts


Build changes
-------------

  * Linux: CI_DRM_8565 -> Patchwork_17831

  CI-20190529: 20190529
  CI_DRM_8565: 267bdbf5f8ba7c0931eb6c11a3b9eb893b10fead @ git://anongit.freedesktop.org/gfx-ci/linux
  IGT_5689: 587cbed206689abbad60689d4a32bf9caf0cc124 @ git://anongit.freedesktop.org/xorg/app/intel-gpu-tools
  Patchwork_17831: bca3761377846e842068f30f26ae07d5d8b0e42b @ git://anongit.freedesktop.org/gfx-ci/linux
  piglit_4509: fdc5a4ca11124ab8413c7988896eec4c97336694 @ git://anongit.freedesktop.org/piglit

== Logs ==

For more details see: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_17831/index.html
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