[Intel-gfx] [CI 1/2] drm/i915/gt: Suspend tasklets before resume sanitization

[Intel-gfx] [CI 1/2] drm/i915/gt: Suspend tasklets before resume sanitization

[Chris Wilson]

It is possible for a residual tasklet to be pending execution as we
resume (whether that's some prior test kicking off the tasklet, or if we
are in a suspend/resume stress test). As such, we do not want that
tasklet to execute in the middle of our sanitization, such that it sees
the poisoned state. For example,

<4>[  449.386553] invalid opcode: 0000 [#1] PREEMPT SMP NOPTI
<4>[  449.386555] CPU: 1 PID: 5115 Comm: i915_selftest Tainted: G     U  W         5.7.0-rc4-CI-CI_DRM_8472+ #1
<4>[  449.386556] Hardware name: Intel Corporation Ice Lake Client Platform/IceLake U DDR4 SODIMM PD RVP TLC, BIOS ICLSFWR1.R00.3183.A00.1905020411 05/02/2019
<4>[  449.386585] RIP: 0010:process_csb+0x6bf/0x830 [i915]
<4>[  449.386588] Code: 00 48 c7 c2 10 bc 4c a0 48 c7 c7 d4 75 34 a0 e8 87 0e e6 e0 bf 01 00 00 00 e8 9d e0 e5 e0 31 f6 bf 09 00 00 00 e8 e1 ba d6 e0 <0f> 0b 8b 87 10 05 00 00 85 c0 0f 85 5f f9 ff ff 48 c7 c1 70 a5 4f
<4>[  449.386591] RSP: 0018:ffffc90000170ea0 EFLAGS: 00010297
<4>[  449.386594] RAX: 0000000080000101 RBX: 0000000000000000 RCX: 0000000000000000
<4>[  449.386596] RDX: ffff88849d5bc040 RSI: 0000000000000000 RDI: 0000000000000009
<4>[  449.386598] RBP: ffffc90000170f00 R08: 0000000000000000 R09: 0000000000000000
<4>[  449.386600] R10: 0000000000000000 R11: 0000000000000000 R12: ffff88843ccea018
<4>[  449.386602] R13: ffff88843ccea658 R14: ffff88843ccea640 R15: ffff88843ccea000
<4>[  449.386605] FS:  00007f826a813300(0000) GS:ffff88849fe80000(0000) knlGS:0000000000000000
<4>[  449.386607] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
<4>[  449.386609] CR2: 0000560366b94280 CR3: 000000048ba02002 CR4: 0000000000760ee0
<4>[  449.386611] PKRU: 55555554
<4>[  449.386613] Call Trace:
<4>[  449.386616]  <IRQ>
<4>[  449.386646]  ? execlists_submission_tasklet+0xcf/0x140 [i915]
<4>[  449.386674]  execlists_submission_tasklet+0x2f/0x140 [i915]
<4>[  449.386679]  tasklet_action_common.isra.16+0x6c/0x1c0
<4>[  449.386684]  __do_softirq+0xdf/0x49e
<4>[  449.386687]  irq_exit+0xba/0xc0
<4>[  449.386690]  smp_apic_timer_interrupt+0xb7/0x280
<4>[  449.386693]  apic_timer_interrupt+0xf/0x20
<4>[  449.386695]  </IRQ>
<4>[  449.386698] RIP: 0010:_raw_spin_unlock_irqrestore+0x49/0x60
<4>[  449.386701] Code: c7 02 75 1f 53 9d e8 26 ab 75 ff bf 01 00 00 00 e8 7c a3 69 ff 65 8b 05 7d 9b 5c 7e 85 c0 74 0c 5b 5d c3 e8 09 aa 75 ff 53 9d <eb> df e8 ca 39 5b ff 5b 5d c3 0f 1f 00 66 2e 0f 1f 84 00 00 00 00
<4>[  449.386703] RSP: 0018:ffffc90000a6b950 EFLAGS: 00000202 ORIG_RAX: ffffffffffffff13
<4>[  449.386706] RAX: 0000000080000001 RBX: 0000000000000202 RCX: 0000000000000000
<4>[  449.386708] RDX: ffff88849d5bc040 RSI: ffff88849d5bc900 RDI: ffffffff82386f12
<4>[  449.386710] RBP: ffff88847d400f00 R08: ffff88849d5bc900 R09: 0000000000000000
<4>[  449.386712] R10: 0000000000000000 R11: 0000000000000000 R12: 00000000ffff0b0b
<4>[  449.386714] R13: 000000000000000c R14: ffff88847d40bf70 R15: ffff88847d40cef8
<4>[  449.386742]  reset_csb_pointers+0x59/0x140 [i915]
<4>[  449.386769]  execlists_sanitize+0x3e/0x60 [i915]
<4>[  449.386797]  gt_sanitize+0xd6/0x260 [i915]

As part of the reset preparation, engine->reset.prepare() prevents the
tasklet from running, so pull the sanitization inside the critical
section for reset.

Closes: https://gitlab.freedesktop.org/drm/intel/-/issues/1812
Fixes: 23122a4d992b ("drm/i915/gt: Scrub execlists state on resume")
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Mika Kuoppala <mika.kuoppala@linux.intel.com>
---
 drivers/gpu/drm/i915/gt/intel_gt_pm.c | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/drivers/gpu/drm/i915/gt/intel_gt_pm.c b/drivers/gpu/drm/i915/gt/intel_gt_pm.c
index e59776485457..6bdb434a442d 100644
--- a/drivers/gpu/drm/i915/gt/intel_gt_pm.c
+++ b/drivers/gpu/drm/i915/gt/intel_gt_pm.c
@@ -150,10 +150,6 @@ static void gt_sanitize(struct intel_gt *gt, bool force)
 	if (intel_gt_is_wedged(gt))
 		intel_gt_unset_wedged(gt);
 
-	for_each_engine(engine, gt, id)
-		if (engine->sanitize)
-			engine->sanitize(engine);
-
 	intel_uc_sanitize(&gt->uc);
 
 	for_each_engine(engine, gt, id)
@@ -162,6 +158,10 @@ static void gt_sanitize(struct intel_gt *gt, bool force)
 
 	intel_uc_reset_prepare(&gt->uc);
 
+	for_each_engine(engine, gt, id)
+		if (engine->sanitize)
+			engine->sanitize(engine);
+
 	if (reset_engines(gt) || force) {
 		for_each_engine(engine, gt, id)
 			__intel_engine_reset(engine, false);
-- 
2.20.1

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[Intel-gfx] [CI 2/2] drm/i915/gt: Trace the CS interrupt

[Chris Wilson]

We have traces for the semaphore and the error, but not the far more
frequent CS interrupts. This is likely to be too much, but for the
purpose of live_unlite_preempt it may answer a question or two.

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
---
 drivers/gpu/drm/i915/gt/intel_gt_irq.c | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/i915/gt/intel_gt_irq.c b/drivers/gpu/drm/i915/gt/intel_gt_irq.c
index 0cc7dd54f4f9..4291d55c5457 100644
--- a/drivers/gpu/drm/i915/gt/intel_gt_irq.c
+++ b/drivers/gpu/drm/i915/gt/intel_gt_irq.c
@@ -48,8 +48,12 @@ cs_irq_handler(struct intel_engine_cs *engine, u32 iir)
 			tasklet = true;
 	}
 
-	if (iir & GT_CONTEXT_SWITCH_INTERRUPT)
+	if (iir & GT_CONTEXT_SWITCH_INTERRUPT) {
+		ENGINE_TRACE(engine, "CS: %x %x\n",
+			     ENGINE_READ_FW(engine, RING_EXECLIST_STATUS_HI),
+			     ENGINE_READ_FW(engine, RING_EXECLIST_STATUS_LO));
 		tasklet = true;
+	}
 
 	if (iir & GT_RENDER_USER_INTERRUPT) {
 		intel_engine_signal_breadcrumbs(engine);
-- 
2.20.1

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[Intel-gfx] ✗ Fi.CI.CHECKPATCH: warning for series starting with [CI,1/2] drm/i915/gt: Suspend tasklets before resume sanitization

[Patchwork]

== Series Details ==

Series: series starting with [CI,1/2] drm/i915/gt: Suspend tasklets before resume sanitization
URL   : https://patchwork.freedesktop.org/series/77226/
State : warning

== Summary ==

$ dim checkpatch origin/drm-tip
97e29f1cb47b drm/i915/gt: Suspend tasklets before resume sanitization
-:13: WARNING:COMMIT_LOG_LONG_LINE: Possible unwrapped commit description (prefer a maximum 75 chars per line)
#13: 
<4>[  449.386555] CPU: 1 PID: 5115 Comm: i915_selftest Tainted: G     U  W         5.7.0-rc4-CI-CI_DRM_8472+ #1

total: 0 errors, 1 warnings, 0 checks, 20 lines checked
fe4894a05853 drm/i915/gt: Trace the CS interrupt

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[Intel-gfx] ✓ Fi.CI.BAT: success for series starting with [CI,1/2] drm/i915/gt: Suspend tasklets before resume sanitization

[Patchwork]

== Series Details ==

Series: series starting with [CI,1/2] drm/i915/gt: Suspend tasklets before resume sanitization
URL   : https://patchwork.freedesktop.org/series/77226/
State : success

== Summary ==

CI Bug Log - changes from CI_DRM_8474 -> Patchwork_17647
====================================================

Summary
-------

  **SUCCESS**

  No regressions found.

  External URL: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_17647/index.html

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

  Here are the changes found in Patchwork_17647 that come from known issues:

### IGT changes ###

#### Possible fixes ####

  * igt@i915_selftest@live@execlists:
    - fi-kbl-soraka:      [DMESG-FAIL][1] ([i915#656]) -> [PASS][2]
   [1]: https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_8474/fi-kbl-soraka/igt@i915_selftest@live@execlists.html
   [2]: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_17647/fi-kbl-soraka/igt@i915_selftest@live@execlists.html

  
  [i915#656]: https://gitlab.freedesktop.org/drm/intel/issues/656


Participating hosts (50 -> 44)
------------------------------

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


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

  * CI: CI-20190529 -> None
  * Linux: CI_DRM_8474 -> Patchwork_17647

  CI-20190529: 20190529
  CI_DRM_8474: 2244df7018f329285893f900c738e7074e6ae1d5 @ git://anongit.freedesktop.org/gfx-ci/linux
  IGT_5651: e54e2642f1967ca3c488db32264607df670d1dfb @ git://anongit.freedesktop.org/xorg/app/intel-gpu-tools
  Patchwork_17647: fe4894a05853072fdfcf0bdec324c6cf4e5ab99c @ git://anongit.freedesktop.org/gfx-ci/linux


== Linux commits ==

fe4894a05853 drm/i915/gt: Trace the CS interrupt
97e29f1cb47b drm/i915/gt: Suspend tasklets before resume sanitization

== Logs ==

For more details see: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_17647/index.html
_______________________________________________
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[Intel-gfx] ✓ Fi.CI.IGT: success for series starting with [CI,1/2] drm/i915/gt: Suspend tasklets before resume sanitization

[Patchwork]

== Series Details ==

Series: series starting with [CI,1/2] drm/i915/gt: Suspend tasklets before resume sanitization
URL   : https://patchwork.freedesktop.org/series/77226/
State : success

== Summary ==

CI Bug Log - changes from CI_DRM_8474_full -> Patchwork_17647_full
====================================================

Summary
-------

  **SUCCESS**

  No regressions found.

  

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

  Here are the changes found in Patchwork_17647_full that come from known issues:

### IGT changes ###

#### Issues hit ####

  * igt@gen9_exec_parse@allowed-all:
    - shard-skl:          [PASS][1] -> [DMESG-WARN][2] ([i915#1436] / [i915#716])
   [1]: https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_8474/shard-skl6/igt@gen9_exec_parse@allowed-all.html
   [2]: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_17647/shard-skl3/igt@gen9_exec_parse@allowed-all.html

  * igt@kms_cursor_crc@pipe-c-cursor-128x128-offscreen:
    - shard-skl:          [PASS][3] -> [FAIL][4] ([i915#54])
   [3]: https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_8474/shard-skl2/igt@kms_cursor_crc@pipe-c-cursor-128x128-offscreen.html
   [4]: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_17647/shard-skl8/igt@kms_cursor_crc@pipe-c-cursor-128x128-offscreen.html

  * igt@kms_cursor_crc@pipe-c-cursor-64x64-random:
    - shard-kbl:          [PASS][5] -> [DMESG-WARN][6] ([i915#165] / [i915#62] / [i915#92]) +4 similar issues
   [5]: https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_8474/shard-kbl6/igt@kms_cursor_crc@pipe-c-cursor-64x64-random.html
   [6]: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_17647/shard-kbl2/igt@kms_cursor_crc@pipe-c-cursor-64x64-random.html

  * igt@kms_frontbuffer_tracking@fbc-1p-rte:
    - shard-kbl:          [PASS][7] -> [DMESG-WARN][8] ([i915#165] / [i915#62])
   [7]: https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_8474/shard-kbl6/igt@kms_frontbuffer_tracking@fbc-1p-rte.html
   [8]: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_17647/shard-kbl2/igt@kms_frontbuffer_tracking@fbc-1p-rte.html

  * igt@kms_plane@plane-panning-bottom-right-suspend-pipe-b-planes:
    - shard-apl:          [PASS][9] -> [DMESG-WARN][10] ([i915#180]) +2 similar issues
   [9]: https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_8474/shard-apl2/igt@kms_plane@plane-panning-bottom-right-suspend-pipe-b-planes.html
   [10]: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_17647/shard-apl8/igt@kms_plane@plane-panning-bottom-right-suspend-pipe-b-planes.html

  * igt@kms_plane_alpha_blend@pipe-c-constant-alpha-min:
    - shard-skl:          [PASS][11] -> [FAIL][12] ([fdo#108145] / [i915#265]) +1 similar issue
   [11]: https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_8474/shard-skl2/igt@kms_plane_alpha_blend@pipe-c-constant-alpha-min.html
   [12]: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_17647/shard-skl8/igt@kms_plane_alpha_blend@pipe-c-constant-alpha-min.html

  * igt@kms_psr2_su@frontbuffer:
    - shard-iclb:         [PASS][13] -> [SKIP][14] ([fdo#109642] / [fdo#111068])
   [13]: https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_8474/shard-iclb2/igt@kms_psr2_su@frontbuffer.html
   [14]: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_17647/shard-iclb5/igt@kms_psr2_su@frontbuffer.html

  * igt@kms_psr@psr2_cursor_render:
    - shard-iclb:         [PASS][15] -> [SKIP][16] ([fdo#109441])
   [15]: https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_8474/shard-iclb2/igt@kms_psr@psr2_cursor_render.html
   [16]: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_17647/shard-iclb5/igt@kms_psr@psr2_cursor_render.html

  
#### Possible fixes ####

  * igt@i915_suspend@sysfs-reader:
    - shard-kbl:          [DMESG-WARN][17] ([i915#180]) -> [PASS][18]
   [17]: https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_8474/shard-kbl4/igt@i915_suspend@sysfs-reader.html
   [18]: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_17647/shard-kbl7/igt@i915_suspend@sysfs-reader.html

  * igt@kms_cursor_legacy@all-pipes-torture-move:
    - shard-snb:          [DMESG-WARN][19] ([i915#128]) -> [PASS][20]
   [19]: https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_8474/shard-snb5/igt@kms_cursor_legacy@all-pipes-torture-move.html
   [20]: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_17647/shard-snb6/igt@kms_cursor_legacy@all-pipes-torture-move.html

  * igt@kms_cursor_legacy@pipe-d-torture-bo:
    - shard-tglb:         [DMESG-WARN][21] ([i915#128]) -> [PASS][22]
   [21]: https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_8474/shard-tglb1/igt@kms_cursor_legacy@pipe-d-torture-bo.html
   [22]: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_17647/shard-tglb1/igt@kms_cursor_legacy@pipe-d-torture-bo.html

  * igt@kms_hdr@bpc-switch-dpms:
    - shard-skl:          [FAIL][23] ([i915#1188]) -> [PASS][24] +1 similar issue
   [23]: https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_8474/shard-skl10/igt@kms_hdr@bpc-switch-dpms.html
   [24]: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_17647/shard-skl1/igt@kms_hdr@bpc-switch-dpms.html

  * igt@kms_plane_alpha_blend@pipe-a-constant-alpha-min:
    - shard-skl:          [FAIL][25] ([fdo#108145] / [i915#265]) -> [PASS][26] +1 similar issue
   [25]: https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_8474/shard-skl7/igt@kms_plane_alpha_blend@pipe-a-constant-alpha-min.html
   [26]: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_17647/shard-skl8/igt@kms_plane_alpha_blend@pipe-a-constant-alpha-min.html

  * igt@kms_psr@psr2_sprite_plane_move:
    - shard-iclb:         [SKIP][27] ([fdo#109441]) -> [PASS][28] +2 similar issues
   [27]: https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_8474/shard-iclb3/igt@kms_psr@psr2_sprite_plane_move.html
   [28]: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_17647/shard-iclb2/igt@kms_psr@psr2_sprite_plane_move.html

  * {igt@perf@blocking-parameterized}:
    - shard-hsw:          [FAIL][29] ([i915#1542]) -> [PASS][30]
   [29]: https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_8474/shard-hsw4/igt@perf@blocking-parameterized.html
   [30]: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_17647/shard-hsw7/igt@perf@blocking-parameterized.html

  
#### Warnings ####

  * igt@i915_pm_rpm@modeset-lpsp-stress-no-wait:
    - shard-snb:          [SKIP][31] ([fdo#109271]) -> [INCOMPLETE][32] ([i915#82]) +1 similar issue
   [31]: https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_8474/shard-snb6/igt@i915_pm_rpm@modeset-lpsp-stress-no-wait.html
   [32]: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_17647/shard-snb6/igt@i915_pm_rpm@modeset-lpsp-stress-no-wait.html

  * igt@kms_content_protection@atomic:
    - shard-apl:          [TIMEOUT][33] ([i915#1319]) -> [FAIL][34] ([fdo#110321] / [fdo#110336])
   [33]: https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_8474/shard-apl6/igt@kms_content_protection@atomic.html
   [34]: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_17647/shard-apl4/igt@kms_content_protection@atomic.html

  * igt@kms_plane_alpha_blend@pipe-c-alpha-basic:
    - shard-kbl:          [FAIL][35] ([fdo#108145] / [i915#265]) -> [FAIL][36] ([fdo#108145] / [i915#265] / [i915#62])
   [35]: https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_8474/shard-kbl2/igt@kms_plane_alpha_blend@pipe-c-alpha-basic.html
   [36]: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_17647/shard-kbl2/igt@kms_plane_alpha_blend@pipe-c-alpha-basic.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#109271]: https://bugs.freedesktop.org/show_bug.cgi?id=109271
  [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#1188]: https://gitlab.freedesktop.org/drm/intel/issues/1188
  [i915#128]: https://gitlab.freedesktop.org/drm/intel/issues/128
  [i915#1319]: https://gitlab.freedesktop.org/drm/intel/issues/1319
  [i915#1436]: https://gitlab.freedesktop.org/drm/intel/issues/1436
  [i915#1542]: https://gitlab.freedesktop.org/drm/intel/issues/1542
  [i915#165]: https://gitlab.freedesktop.org/drm/intel/issues/165
  [i915#180]: https://gitlab.freedesktop.org/drm/intel/issues/180
  [i915#265]: https://gitlab.freedesktop.org/drm/intel/issues/265
  [i915#54]: https://gitlab.freedesktop.org/drm/intel/issues/54
  [i915#62]: https://gitlab.freedesktop.org/drm/intel/issues/62
  [i915#716]: https://gitlab.freedesktop.org/drm/intel/issues/716
  [i915#82]: https://gitlab.freedesktop.org/drm/intel/issues/82
  [i915#92]: https://gitlab.freedesktop.org/drm/intel/issues/92


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

  No changes in participating hosts


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

  * CI: CI-20190529 -> None
  * Linux: CI_DRM_8474 -> Patchwork_17647

  CI-20190529: 20190529
  CI_DRM_8474: 2244df7018f329285893f900c738e7074e6ae1d5 @ git://anongit.freedesktop.org/gfx-ci/linux
  IGT_5651: e54e2642f1967ca3c488db32264607df670d1dfb @ git://anongit.freedesktop.org/xorg/app/intel-gpu-tools
  Patchwork_17647: fe4894a05853072fdfcf0bdec324c6cf4e5ab99c @ 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_17647/index.html
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