[Intel-gfx] [PATCH v6 0/3] Add basic selftests for rc6

[Intel-gfx] [PATCH v6 0/3] Add basic selftests for rc6

[Andi Shyti]

From: Andi Shyti <andi.shyti@intel.com>

Hi,

unfortunately rc6 is still a mysterious system and not all tests
provide the expected results.

I split the three tests in three different patches in order to
have more flexibility in picking them.

Thanks Chris and Mika for the reviews,
Andi

Changelog:
* v5 -> v6:
	- the tests are split in three different patches, nothing
	  else.
* v4 -> v5:
        - added changes in v4 which I forgot to include
        - a small renaming and refactoring suggested by Mika to
          make clear the purpose of the test function. Now it's
          called "is_rc6_active" in a question format (and I
          believe Chris won't like my creativity) and it returns
          true if rc6 is active and false otherwise. Thanks, Mika!
        - fixed a couple of typos.
	- dropped the live_rc6_basic test.
* v3 -> v4:
        - just a small refactoring where test_rc6 becomes a
          measure function while another test_rc6 checks the
          return value from the measure.
* v2 -> v3:
        - rebased on top of the latest drm-tip
        - fixed exiting order in rc6_basic to avoid exiting
          without releasing the pm reference
* v1 -> v2:
        - some changes from Chris.

Andi Shyti (3):
  drm/i915/selftests: add busy selftests for rc6
  drm/i915/selftests: add threshold selftests for rc6
  drm/i915/selftests: add basic on/off selftests for rc6

 drivers/gpu/drm/i915/gt/selftest_gt_pm.c |   3 +
 drivers/gpu/drm/i915/gt/selftest_rc6.c   | 216 +++++++++++++++++++++++
 drivers/gpu/drm/i915/gt/selftest_rc6.h   |   3 +
 3 files changed, 222 insertions(+)

-- 
2.25.0

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[Intel-gfx] [PATCH v6 1/3] drm/i915/selftests: add busy selftests for rc6

[Andi Shyti]

From: Andi Shyti <andi.shyti@intel.com>

live_rc6_busy keeps the gpu busy and then goes in idle;
checks that we don't fall in rc6 when busy and that we do fall
in rc6 when idling.

The test is added as subtest of the bigger live_late_gt_pm
selftest.

The basic rc6 functionality is tested by checking the reference
counter within the evaluation interval.

Signed-off-by: Andi Shyti <andi.shyti@intel.com>
Cc: Chris Wilson <chris@chris-wilson.co.uk>
---
 drivers/gpu/drm/i915/gt/selftest_gt_pm.c |   1 +
 drivers/gpu/drm/i915/gt/selftest_rc6.c   | 112 +++++++++++++++++++++++
 drivers/gpu/drm/i915/gt/selftest_rc6.h   |   1 +
 3 files changed, 114 insertions(+)

diff --git a/drivers/gpu/drm/i915/gt/selftest_gt_pm.c b/drivers/gpu/drm/i915/gt/selftest_gt_pm.c
index 09ff8e4f88af..40562f5208ea 100644
--- a/drivers/gpu/drm/i915/gt/selftest_gt_pm.c
+++ b/drivers/gpu/drm/i915/gt/selftest_gt_pm.c
@@ -51,6 +51,7 @@ static int live_gt_resume(void *arg)
 int intel_gt_pm_live_selftests(struct drm_i915_private *i915)
 {
 	static const struct i915_subtest tests[] = {
+		SUBTEST(live_rc6_busy),
 		SUBTEST(live_rc6_manual),
 		SUBTEST(live_gt_resume),
 	};
diff --git a/drivers/gpu/drm/i915/gt/selftest_rc6.c b/drivers/gpu/drm/i915/gt/selftest_rc6.c
index 5f7e2dcf5686..270e8d24036d 100644
--- a/drivers/gpu/drm/i915/gt/selftest_rc6.c
+++ b/drivers/gpu/drm/i915/gt/selftest_rc6.c
@@ -11,6 +11,7 @@
 #include "selftest_rc6.h"
 
 #include "selftests/i915_random.h"
+#include "selftests/igt_spinner.h"
 
 int live_rc6_manual(void *arg)
 {
@@ -202,3 +203,114 @@ int live_rc6_ctx_wa(void *arg)
 	kfree(engines);
 	return err;
 }
+
+static u32 measure_rc6(struct intel_uncore *uncore, u32 interval)
+{
+	u32 ec1, ec2;
+
+	ec1 = intel_uncore_read(uncore, GEN6_GT_GFX_RC6);
+
+	/*
+	 * It's not important to precisely wait the interval time.
+	 * I'll wait at least twice the time in order to be sure
+	 * that the counting happens in the reference counter.
+	 */
+	msleep(interval);
+
+	ec2 = intel_uncore_read(uncore, GEN6_GT_GFX_RC6);
+
+	pr_info("interval:%x [%dms], threshold:%x, rc6:%x\n",
+		intel_uncore_read(uncore, GEN6_RC_EVALUATION_INTERVAL),
+		interval,
+		intel_uncore_read(uncore, GEN6_RC6_THRESHOLD),
+		ec2 - ec1);
+
+	/* paranoia? ec2 is always supposed to be bigger */
+	return (ec2 >= ec1) ? ec2 - ec1 : 0;
+}
+
+static bool is_rc6_active(struct intel_rc6 *rc6)
+{
+	struct intel_uncore *uncore = rc6_to_uncore(rc6);
+	intel_wakeref_t wakeref;
+	u32 interval;
+
+	wakeref = intel_runtime_pm_get(uncore->rpm);
+
+	interval = intel_uncore_read(uncore, GEN6_RC_EVALUATION_INTERVAL);
+
+	/*
+	 * the interval is stored in steps of 1.28us
+	 */
+	interval = div_u64(mul_u32_u32(interval, 128),
+			   100 * 1000); /* => milliseconds */
+
+	intel_runtime_pm_put(uncore->rpm, wakeref);
+
+	return !!measure_rc6(uncore, 2 * interval);
+}
+
+int live_rc6_busy(void *arg)
+{
+	struct intel_gt *gt = arg;
+	struct intel_rc6 *rc6 = &gt->rc6;
+	struct intel_engine_cs *engine;
+	struct igt_spinner spin;
+	intel_wakeref_t wakeref;
+	enum intel_engine_id id;
+	int err;
+
+	if (!rc6->supported)
+		return 0;
+
+	err = igt_spinner_init(&spin, gt);
+	if (err)
+		return err;
+
+	wakeref = intel_runtime_pm_get(gt->uncore->rpm);
+	for_each_engine(engine, gt, id) {
+		struct i915_request *rq;
+
+		rq = igt_spinner_create_request(&spin,
+						engine->kernel_context,
+						MI_NOOP);
+		if (IS_ERR(rq)) {
+			err = PTR_ERR(rq);
+			break;
+		}
+
+		i915_request_get(rq);
+		i915_request_add(rq);
+
+		igt_wait_for_spinner(&spin, rq); /* it's enough waiting */
+
+		/* gpu is busy, we shouldn't be in rc6 */
+		if (is_rc6_active(rc6)) {
+			pr_err("%s: never busy enough for having a nap\n",
+			       engine->name);
+			err = -EINVAL;
+		}
+
+		igt_spinner_end(&spin);
+		if (i915_request_wait(rq, 0, HZ / 5) < 0)
+			err = -ETIME;
+		i915_request_put(rq);
+		if (err)
+			break;
+
+		intel_gt_wait_for_idle(gt, HZ / 5);
+		intel_gt_pm_wait_for_idle(gt);
+
+		/* gpu is idle, we should be in rc6 */
+		if (!is_rc6_active(rc6)) {
+			pr_err("%s is idle but doesn't go in rc6\n",
+			       engine->name);
+			err = -EINVAL;
+			break;
+		}
+	}
+	intel_runtime_pm_put(gt->uncore->rpm, wakeref);
+
+	igt_spinner_fini(&spin);
+	return err;
+}
diff --git a/drivers/gpu/drm/i915/gt/selftest_rc6.h b/drivers/gpu/drm/i915/gt/selftest_rc6.h
index 762fd442d7b2..75e05a8a1fda 100644
--- a/drivers/gpu/drm/i915/gt/selftest_rc6.h
+++ b/drivers/gpu/drm/i915/gt/selftest_rc6.h
@@ -7,6 +7,7 @@
 #ifndef SELFTEST_RC6_H
 #define SELFTEST_RC6_H
 
+int live_rc6_busy(void *arg);
 int live_rc6_ctx_wa(void *arg);
 int live_rc6_manual(void *arg);
 
-- 
2.25.0

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[Intel-gfx] [PATCH v6 2/3] drm/i915/selftests: add threshold selftests for rc6

[Andi Shyti]

From: Andi Shyti <andi.shyti@intel.com>

rc6 should not work when the evaluation interval is less than the
threshold and should work otherwise.

live_rc6_threshold tests such behavior

The test is added as subtest of the bigger live_late_gt_pm
selftest.

Signed-off-by: Andi Shyti <andi.shyti@intel.com>
Cc: Chris Wilson <chris@chris-wilson.co.uk>
---
 drivers/gpu/drm/i915/gt/selftest_gt_pm.c |  1 +
 drivers/gpu/drm/i915/gt/selftest_rc6.c   | 67 ++++++++++++++++++++++++
 drivers/gpu/drm/i915/gt/selftest_rc6.h   |  1 +
 3 files changed, 69 insertions(+)

diff --git a/drivers/gpu/drm/i915/gt/selftest_gt_pm.c b/drivers/gpu/drm/i915/gt/selftest_gt_pm.c
index 40562f5208ea..d39a21a047de 100644
--- a/drivers/gpu/drm/i915/gt/selftest_gt_pm.c
+++ b/drivers/gpu/drm/i915/gt/selftest_gt_pm.c
@@ -53,6 +53,7 @@ int intel_gt_pm_live_selftests(struct drm_i915_private *i915)
 	static const struct i915_subtest tests[] = {
 		SUBTEST(live_rc6_busy),
 		SUBTEST(live_rc6_manual),
+		SUBTEST(live_rc6_threshold),
 		SUBTEST(live_gt_resume),
 	};
 
diff --git a/drivers/gpu/drm/i915/gt/selftest_rc6.c b/drivers/gpu/drm/i915/gt/selftest_rc6.c
index 270e8d24036d..7b5d476a8ad1 100644
--- a/drivers/gpu/drm/i915/gt/selftest_rc6.c
+++ b/drivers/gpu/drm/i915/gt/selftest_rc6.c
@@ -250,6 +250,73 @@ static bool is_rc6_active(struct intel_rc6 *rc6)
 	return !!measure_rc6(uncore, 2 * interval);
 }
 
+int live_rc6_threshold(void *arg)
+{
+	struct intel_gt *gt = arg;
+	struct intel_uncore *uncore = gt->uncore;
+	struct intel_rc6 *rc6 = &gt->rc6;
+	intel_wakeref_t wakeref;
+	u32 threshold, interval;
+	u32 t_orig, i_orig;
+	int err = 0;
+
+	if (!rc6->manual) /* No interfering PCU! */
+		return 0;
+
+	wakeref = intel_runtime_pm_get(uncore->rpm);
+
+	__intel_rc6_disable(rc6); /* stop before adjusting thresholds */
+
+	t_orig = intel_uncore_read(uncore, GEN6_RC6_THRESHOLD);
+	i_orig = intel_uncore_read(uncore, GEN6_RC_EVALUATION_INTERVAL);
+
+	/*
+	 * set the threshold to 50ms
+	 *
+	 * 50ms * 1000 = 50000us
+	 * 50000 / (1.28 * 100) / 100 (we don't have floating point)
+	 */
+	threshold = 50 * 1000 / 128 * 100;
+	intel_uncore_write(uncore, GEN6_RC6_THRESHOLD, threshold);
+
+	/* set interval indicatively to half the threshold */
+	interval = threshold / 2;
+	intel_uncore_write(uncore, GEN6_RC_EVALUATION_INTERVAL, interval);
+
+	intel_rc6_unpark(rc6);
+
+	/* interval < threshold */
+	if (is_rc6_active(rc6)) {
+		pr_err("i915 mismatch: rc6 with interval < threshold\n");
+		err = -EINVAL;
+	}
+
+	__intel_rc6_disable(rc6);
+
+	/* set interval indicatively to twice the threshold */
+	interval = threshold * 2;
+	intel_uncore_write(uncore, GEN6_RC_EVALUATION_INTERVAL, interval);
+
+	intel_rc6_unpark(rc6);
+
+	/* interval > threshold */
+	if (!is_rc6_active(rc6)) {
+		pr_err("i915 mismatch: not in rc6 with interval > threshold\n");
+		err = -EINVAL;
+	}
+
+	__intel_rc6_disable(rc6);
+
+	intel_uncore_write(uncore, GEN6_RC6_THRESHOLD, t_orig);
+	intel_uncore_write(uncore, GEN6_RC_EVALUATION_INTERVAL, i_orig);
+
+	intel_rc6_park(rc6);
+
+	intel_runtime_pm_put(uncore->rpm, wakeref);
+
+	return err;
+}
+
 int live_rc6_busy(void *arg)
 {
 	struct intel_gt *gt = arg;
diff --git a/drivers/gpu/drm/i915/gt/selftest_rc6.h b/drivers/gpu/drm/i915/gt/selftest_rc6.h
index 75e05a8a1fda..312894423dc2 100644
--- a/drivers/gpu/drm/i915/gt/selftest_rc6.h
+++ b/drivers/gpu/drm/i915/gt/selftest_rc6.h
@@ -10,5 +10,6 @@
 int live_rc6_busy(void *arg);
 int live_rc6_ctx_wa(void *arg);
 int live_rc6_manual(void *arg);
+int live_rc6_threshold(void *arg);
 
 #endif /* SELFTEST_RC6_H */
-- 
2.25.0

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[Intel-gfx] [PATCH v6 3/3] drm/i915/selftests: add basic on/off selftests for rc6

[Andi Shyti]

From: Andi Shyti <andi.shyti@intel.com>

live_rc6_basic simply checks if rc6 works when it's enabled
or stops when it's disabled.

The test is added as subtest of the bigger live_late_gt_pm
selftest.

Signed-off-by: Andi Shyti <andi.shyti@intel.com>
Cc: Chris Wilson <chris@chris-wilson.co.uk>
---
 drivers/gpu/drm/i915/gt/selftest_gt_pm.c |  1 +
 drivers/gpu/drm/i915/gt/selftest_rc6.c   | 37 ++++++++++++++++++++++++
 drivers/gpu/drm/i915/gt/selftest_rc6.h   |  1 +
 3 files changed, 39 insertions(+)

diff --git a/drivers/gpu/drm/i915/gt/selftest_gt_pm.c b/drivers/gpu/drm/i915/gt/selftest_gt_pm.c
index d39a21a047de..2bbdc9235b45 100644
--- a/drivers/gpu/drm/i915/gt/selftest_gt_pm.c
+++ b/drivers/gpu/drm/i915/gt/selftest_gt_pm.c
@@ -51,6 +51,7 @@ static int live_gt_resume(void *arg)
 int intel_gt_pm_live_selftests(struct drm_i915_private *i915)
 {
 	static const struct i915_subtest tests[] = {
+		SUBTEST(live_rc6_basic),
 		SUBTEST(live_rc6_busy),
 		SUBTEST(live_rc6_manual),
 		SUBTEST(live_rc6_threshold),
diff --git a/drivers/gpu/drm/i915/gt/selftest_rc6.c b/drivers/gpu/drm/i915/gt/selftest_rc6.c
index 7b5d476a8ad1..9e84b860b70a 100644
--- a/drivers/gpu/drm/i915/gt/selftest_rc6.c
+++ b/drivers/gpu/drm/i915/gt/selftest_rc6.c
@@ -250,6 +250,43 @@ static bool is_rc6_active(struct intel_rc6 *rc6)
 	return !!measure_rc6(uncore, 2 * interval);
 }
 
+int live_rc6_basic(void *arg)
+{
+	struct intel_gt *gt = arg;
+	struct intel_rc6 *rc6 = &gt->rc6;
+	intel_wakeref_t wakeref;
+	int i, err = 0;
+
+	if (!rc6->supported)
+		return 0;
+
+	wakeref = intel_runtime_pm_get(gt->uncore->rpm);
+
+	/*
+	 * the two loops test rc6 both in case it's enabled
+	 * and in the case it's disabled. It restores the prvious
+	 * status
+	 */
+	for (i = 0; i < 2; i++) {
+		if (rc6->enabled ^ is_rc6_active(rc6)) {
+			err = -EINVAL;
+
+			/* restore before leaving */
+			if (!i)
+				goto exit;
+		}
+
+		if (rc6->enabled)
+			intel_rc6_disable(&gt->rc6);
+		else
+			intel_rc6_enable(&gt->rc6);
+	}
+
+exit:
+	intel_runtime_pm_put(gt->uncore->rpm, wakeref);
+	return err;
+}
+
 int live_rc6_threshold(void *arg)
 {
 	struct intel_gt *gt = arg;
diff --git a/drivers/gpu/drm/i915/gt/selftest_rc6.h b/drivers/gpu/drm/i915/gt/selftest_rc6.h
index 312894423dc2..38183f3558f3 100644
--- a/drivers/gpu/drm/i915/gt/selftest_rc6.h
+++ b/drivers/gpu/drm/i915/gt/selftest_rc6.h
@@ -7,6 +7,7 @@
 #ifndef SELFTEST_RC6_H
 #define SELFTEST_RC6_H
 
+int live_rc6_basic(void *arg);
 int live_rc6_busy(void *arg);
 int live_rc6_ctx_wa(void *arg);
 int live_rc6_manual(void *arg);
-- 
2.25.0

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Re: [Intel-gfx] [PATCH v6 0/3] Add basic selftests for rc6

[Chris Wilson]

Hmm, intel-gfx@ has taken exception to the last couple of sends.

Odd.
-Chris
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[Intel-gfx] ✗ Fi.CI.BAT: failure for Add basic selftests for rc6

[Patchwork]

== Series Details ==

Series: Add basic selftests for rc6
URL   : https://patchwork.freedesktop.org/series/73095/
State : failure

== Summary ==

CI Bug Log - changes from CI_DRM_7876 -> Patchwork_16459
====================================================

Summary
-------

  **FAILURE**

  Serious unknown changes coming with Patchwork_16459 absolutely need to be
  verified manually.
  
  If you think the reported changes have nothing to do with the changes
  introduced in Patchwork_16459, please notify your bug team to allow them
  to document this new failure mode, which will reduce false positives in CI.

  External URL: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_16459/index.html

Possible new issues
-------------------

  Here are the unknown changes that may have been introduced in Patchwork_16459:

### IGT changes ###

#### Possible regressions ####

  * igt@i915_selftest@live_gt_pm:
    - fi-cfl-8700k:       [PASS][1] -> [DMESG-FAIL][2]
   [1]: https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_7876/fi-cfl-8700k/igt@i915_selftest@live_gt_pm.html
   [2]: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_16459/fi-cfl-8700k/igt@i915_selftest@live_gt_pm.html
    - fi-icl-u2:          [PASS][3] -> [DMESG-FAIL][4]
   [3]: https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_7876/fi-icl-u2/igt@i915_selftest@live_gt_pm.html
   [4]: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_16459/fi-icl-u2/igt@i915_selftest@live_gt_pm.html
    - fi-cfl-8109u:       [PASS][5] -> [DMESG-FAIL][6]
   [5]: https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_7876/fi-cfl-8109u/igt@i915_selftest@live_gt_pm.html
   [6]: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_16459/fi-cfl-8109u/igt@i915_selftest@live_gt_pm.html
    - fi-bsw-nick:        [PASS][7] -> [DMESG-FAIL][8]
   [7]: https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_7876/fi-bsw-nick/igt@i915_selftest@live_gt_pm.html
   [8]: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_16459/fi-bsw-nick/igt@i915_selftest@live_gt_pm.html
    - fi-kbl-x1275:       [PASS][9] -> [DMESG-FAIL][10]
   [9]: https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_7876/fi-kbl-x1275/igt@i915_selftest@live_gt_pm.html
   [10]: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_16459/fi-kbl-x1275/igt@i915_selftest@live_gt_pm.html
    - fi-kbl-guc:         [PASS][11] -> [DMESG-FAIL][12]
   [11]: https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_7876/fi-kbl-guc/igt@i915_selftest@live_gt_pm.html
   [12]: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_16459/fi-kbl-guc/igt@i915_selftest@live_gt_pm.html
    - fi-skl-guc:         [PASS][13] -> [DMESG-FAIL][14]
   [13]: https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_7876/fi-skl-guc/igt@i915_selftest@live_gt_pm.html
   [14]: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_16459/fi-skl-guc/igt@i915_selftest@live_gt_pm.html
    - fi-bdw-5557u:       [PASS][15] -> [DMESG-FAIL][16]
   [15]: https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_7876/fi-bdw-5557u/igt@i915_selftest@live_gt_pm.html
   [16]: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_16459/fi-bdw-5557u/igt@i915_selftest@live_gt_pm.html
    - fi-snb-2600:        NOTRUN -> [DMESG-FAIL][17]
   [17]: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_16459/fi-snb-2600/igt@i915_selftest@live_gt_pm.html
    - fi-byt-n2820:       [PASS][18] -> [DMESG-FAIL][19]
   [18]: https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_7876/fi-byt-n2820/igt@i915_selftest@live_gt_pm.html
   [19]: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_16459/fi-byt-n2820/igt@i915_selftest@live_gt_pm.html
    - fi-skl-6700k2:      NOTRUN -> [DMESG-FAIL][20]
   [20]: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_16459/fi-skl-6700k2/igt@i915_selftest@live_gt_pm.html
    - fi-skl-lmem:        NOTRUN -> [DMESG-FAIL][21]
   [21]: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_16459/fi-skl-lmem/igt@i915_selftest@live_gt_pm.html
    - fi-whl-u:           [PASS][22] -> [DMESG-FAIL][23]
   [22]: https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_7876/fi-whl-u/igt@i915_selftest@live_gt_pm.html
   [23]: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_16459/fi-whl-u/igt@i915_selftest@live_gt_pm.html
    - fi-skl-6770hq:      [PASS][24] -> [DMESG-FAIL][25]
   [24]: https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_7876/fi-skl-6770hq/igt@i915_selftest@live_gt_pm.html
   [25]: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_16459/fi-skl-6770hq/igt@i915_selftest@live_gt_pm.html
    - fi-cfl-guc:         [PASS][26] -> [DMESG-FAIL][27]
   [26]: https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_7876/fi-cfl-guc/igt@i915_selftest@live_gt_pm.html
   [27]: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_16459/fi-cfl-guc/igt@i915_selftest@live_gt_pm.html
    - fi-bxt-dsi:         [PASS][28] -> [DMESG-FAIL][29]
   [28]: https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_7876/fi-bxt-dsi/igt@i915_selftest@live_gt_pm.html
   [29]: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_16459/fi-bxt-dsi/igt@i915_selftest@live_gt_pm.html
    - fi-skl-6600u:       NOTRUN -> [DMESG-FAIL][30]
   [30]: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_16459/fi-skl-6600u/igt@i915_selftest@live_gt_pm.html
    - fi-cml-u2:          [PASS][31] -> [DMESG-FAIL][32]
   [31]: https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_7876/fi-cml-u2/igt@i915_selftest@live_gt_pm.html
   [32]: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_16459/fi-cml-u2/igt@i915_selftest@live_gt_pm.html
    - fi-apl-guc:         [PASS][33] -> [DMESG-FAIL][34]
   [33]: https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_7876/fi-apl-guc/igt@i915_selftest@live_gt_pm.html
   [34]: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_16459/fi-apl-guc/igt@i915_selftest@live_gt_pm.html
    - fi-kbl-8809g:       [PASS][35] -> [DMESG-FAIL][36]
   [35]: https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_7876/fi-kbl-8809g/igt@i915_selftest@live_gt_pm.html
   [36]: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_16459/fi-kbl-8809g/igt@i915_selftest@live_gt_pm.html
    - fi-snb-2520m:       NOTRUN -> [DMESG-FAIL][37]
   [37]: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_16459/fi-snb-2520m/igt@i915_selftest@live_gt_pm.html

  
#### Suppressed ####

  The following results come from untrusted machines, tests, or statuses.
  They do not affect the overall result.

  * igt@i915_selftest@live_gt_pm:
    - {fi-ehl-1}:         [DMESG-FAIL][38] ([i915#801]) -> [DMESG-FAIL][39]
   [38]: https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_7876/fi-ehl-1/igt@i915_selftest@live_gt_pm.html
   [39]: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_16459/fi-ehl-1/igt@i915_selftest@live_gt_pm.html

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

  Here are the changes found in Patchwork_16459 that come from known issues:

### IGT changes ###

#### Issues hit ####

  * igt@gem_close_race@basic-threads:
    - fi-byt-j1900:       [PASS][40] -> [INCOMPLETE][41] ([i915#45])
   [40]: https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_7876/fi-byt-j1900/igt@gem_close_race@basic-threads.html
   [41]: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_16459/fi-byt-j1900/igt@gem_close_race@basic-threads.html

  * igt@i915_selftest@live_gem_contexts:
    - fi-byt-n2820:       [PASS][42] -> [DMESG-FAIL][43] ([i915#1052])
   [42]: https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_7876/fi-byt-n2820/igt@i915_selftest@live_gem_contexts.html
   [43]: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_16459/fi-byt-n2820/igt@i915_selftest@live_gem_contexts.html

  
#### Possible fixes ####

  * igt@i915_selftest@live_blt:
    - fi-bsw-nick:        [INCOMPLETE][44] ([i915#392]) -> [PASS][45]
   [44]: https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_7876/fi-bsw-nick/igt@i915_selftest@live_blt.html
   [45]: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_16459/fi-bsw-nick/igt@i915_selftest@live_blt.html

  
#### Warnings ####

  * igt@gem_exec_parallel@contexts:
    - fi-byt-n2820:       [FAIL][46] ([i915#694]) -> [TIMEOUT][47] ([fdo#112271])
   [46]: https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_7876/fi-byt-n2820/igt@gem_exec_parallel@contexts.html
   [47]: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_16459/fi-byt-n2820/igt@gem_exec_parallel@contexts.html

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

  [fdo#112271]: https://bugs.freedesktop.org/show_bug.cgi?id=112271
  [i915#1052]: https://gitlab.freedesktop.org/drm/intel/issues/1052
  [i915#392]: https://gitlab.freedesktop.org/drm/intel/issues/392
  [i915#45]: https://gitlab.freedesktop.org/drm/intel/issues/45
  [i915#694]: https://gitlab.freedesktop.org/drm/intel/issues/694
  [i915#801]: https://gitlab.freedesktop.org/drm/intel/issues/801


Participating hosts (41 -> 40)
------------------------------

  Additional (8): fi-snb-2520m fi-gdg-551 fi-ivb-3770 fi-skl-6700k2 fi-skl-lmem fi-blb-e6850 fi-skl-6600u fi-snb-2600 
  Missing    (9): fi-bsw-n3050 fi-hsw-peppy fi-glk-dsi fi-byt-squawks fi-kbl-7500u fi-bsw-kefka fi-byt-clapper fi-bdw-samus fi-kbl-r 


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

  * CI: CI-20190529 -> None
  * Linux: CI_DRM_7876 -> Patchwork_16459

  CI-20190529: 20190529
  CI_DRM_7876: 6ac39d9964f464065511d439afcf4da065ff96db @ git://anongit.freedesktop.org/gfx-ci/linux
  IGT_5421: 40946e61f9c47e23fdf1fff8090fadee8a4d7d3b @ git://anongit.freedesktop.org/xorg/app/intel-gpu-tools
  Patchwork_16459: 195fefa771276e3c80b3281a2a584dba77439042 @ git://anongit.freedesktop.org/gfx-ci/linux


== Linux commits ==

195fefa77127 drm/i915/selftests: add basic on/off selftests for rc6
d1e55e82a439 drm/i915/selftests: add threshold selftests for rc6
d608976339e3 drm/i915/selftests: add busy selftests for rc6

== Logs ==

For more details see: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_16459/index.html
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