[PATCH] drm/i915/execlists: Always clear preempt status on cancelling all

[PATCH] drm/i915/execlists: Always clear preempt status on cancelling all

[Chris Wilson]

On reset/wedging, we cancel all pending replies from the HW and we also
want to cancel an outstanding preemption event. Since we use the same
function to cancel the pending replies for reset and for a preemption
event, we can simply clear the active tracking for all.

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
---
 drivers/gpu/drm/i915/intel_guc_submission.c | 2 --
 drivers/gpu/drm/i915/intel_lrc.c            | 5 +----
 2 files changed, 1 insertion(+), 6 deletions(-)

diff --git a/drivers/gpu/drm/i915/intel_guc_submission.c b/drivers/gpu/drm/i915/intel_guc_submission.c
index cc444dc5f3ad..94d0674ea3c6 100644
--- a/drivers/gpu/drm/i915/intel_guc_submission.c
+++ b/drivers/gpu/drm/i915/intel_guc_submission.c
@@ -633,8 +633,6 @@ static void complete_preempt_context(struct intel_engine_cs *engine)
 
 	wait_for_guc_preempt_report(engine);
 	intel_write_status_page(engine, I915_GEM_HWS_PREEMPT_INDEX, 0);
-
-	execlists_clear_active(execlists, EXECLISTS_ACTIVE_PREEMPT);
 }
 
 /**
diff --git a/drivers/gpu/drm/i915/intel_lrc.c b/drivers/gpu/drm/i915/intel_lrc.c
index 05567e30efe0..be2c19802b45 100644
--- a/drivers/gpu/drm/i915/intel_lrc.c
+++ b/drivers/gpu/drm/i915/intel_lrc.c
@@ -563,8 +563,6 @@ static void complete_preempt_context(struct intel_engine_execlists *execlists)
 	__unwind_incomplete_requests(container_of(execlists,
 						  struct intel_engine_cs,
 						  execlists));
-
-	execlists_clear_active(execlists, EXECLISTS_ACTIVE_PREEMPT);
 }
 
 static void execlists_dequeue(struct intel_engine_cs *engine)
@@ -792,8 +790,7 @@ execlists_cancel_port_requests(struct intel_engine_execlists * const execlists)
 		port++;
 	}
 
-	execlists_clear_active(execlists, EXECLISTS_ACTIVE_USER);
-	execlists_user_end(execlists);
+	execlists->active = 0;
 }
 
 static void reset_csb_pointers(struct intel_engine_execlists *execlists)
-- 
2.18.0

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[PATCH] drm/i915/execlists: Always clear preempt status on cancelling all

[Chris Wilson]

On reset/wedging, we cancel all pending replies from the HW and we also
want to cancel an outstanding preemption event. Since we use the same
function to cancel the pending replies for reset and for a preemption
event, we can simply clear the active tracking for all.

v2: Keep execlists_user_end() markup for wedging

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
---
 drivers/gpu/drm/i915/intel_guc_submission.c | 2 --
 drivers/gpu/drm/i915/intel_lrc.c            | 6 ++----
 2 files changed, 2 insertions(+), 6 deletions(-)

diff --git a/drivers/gpu/drm/i915/intel_guc_submission.c b/drivers/gpu/drm/i915/intel_guc_submission.c
index cc444dc5f3ad..94d0674ea3c6 100644
--- a/drivers/gpu/drm/i915/intel_guc_submission.c
+++ b/drivers/gpu/drm/i915/intel_guc_submission.c
@@ -633,8 +633,6 @@ static void complete_preempt_context(struct intel_engine_cs *engine)
 
 	wait_for_guc_preempt_report(engine);
 	intel_write_status_page(engine, I915_GEM_HWS_PREEMPT_INDEX, 0);
-
-	execlists_clear_active(execlists, EXECLISTS_ACTIVE_PREEMPT);
 }
 
 /**
diff --git a/drivers/gpu/drm/i915/intel_lrc.c b/drivers/gpu/drm/i915/intel_lrc.c
index 05567e30efe0..33b65608600c 100644
--- a/drivers/gpu/drm/i915/intel_lrc.c
+++ b/drivers/gpu/drm/i915/intel_lrc.c
@@ -563,8 +563,6 @@ static void complete_preempt_context(struct intel_engine_execlists *execlists)
 	__unwind_incomplete_requests(container_of(execlists,
 						  struct intel_engine_cs,
 						  execlists));
-
-	execlists_clear_active(execlists, EXECLISTS_ACTIVE_PREEMPT);
 }
 
 static void execlists_dequeue(struct intel_engine_cs *engine)
@@ -792,8 +790,7 @@ execlists_cancel_port_requests(struct intel_engine_execlists * const execlists)
 		port++;
 	}
 
-	execlists_clear_active(execlists, EXECLISTS_ACTIVE_USER);
-	execlists_user_end(execlists);
+	execlists->active = 0;
 }
 
 static void reset_csb_pointers(struct intel_engine_execlists *execlists)
@@ -839,6 +836,7 @@ static void execlists_cancel_requests(struct intel_engine_cs *engine)
 
 	/* Cancel the requests on the HW and clear the ELSP tracker. */
 	execlists_cancel_port_requests(execlists);
+	execlists_user_end(execlists);
 
 	/* Mark all executing requests as skipped. */
 	list_for_each_entry(rq, &engine->timeline.requests, link) {
-- 
2.18.0

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✗ Fi.CI.BAT: failure for drm/i915/execlists: Always clear preempt status on cancelling all (rev2)

[Patchwork]

== Series Details ==

Series: drm/i915/execlists: Always clear preempt status on cancelling all (rev2)
URL   : https://patchwork.freedesktop.org/series/46528/
State : failure

== Summary ==

Applying: drm/i915/execlists: Always clear preempt status on cancelling all
Using index info to reconstruct a base tree...
M	drivers/gpu/drm/i915/intel_lrc.c
Falling back to patching base and 3-way merge...
Auto-merging drivers/gpu/drm/i915/intel_lrc.c
CONFLICT (content): Merge conflict in drivers/gpu/drm/i915/intel_lrc.c
error: Failed to merge in the changes.
Patch failed at 0001 drm/i915/execlists: Always clear preempt status on cancelling all
Use 'git am --show-current-patch' to see the failed patch
When you have resolved this problem, run "git am --continue".
If you prefer to skip this patch, run "git am --skip" instead.
To restore the original branch and stop patching, run "git am --abort".

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[PATCH] drm/i915/execlists: Always clear preempt status on cancelling all

[Chris Wilson]

On reset/wedging, we cancel all pending replies from the HW and we also
want to cancel an outstanding preemption event. Since we use the same
function to cancel the pending replies for reset and for a preemption
event, we can simply clear the active tracking for all.

v2: Keep execlists_user_end() markup for wedging

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
---
 drivers/gpu/drm/i915/intel_guc_submission.c | 2 --
 drivers/gpu/drm/i915/intel_lrc.c            | 5 ++---
 2 files changed, 2 insertions(+), 5 deletions(-)

diff --git a/drivers/gpu/drm/i915/intel_guc_submission.c b/drivers/gpu/drm/i915/intel_guc_submission.c
index cc444dc5f3ad..94d0674ea3c6 100644
--- a/drivers/gpu/drm/i915/intel_guc_submission.c
+++ b/drivers/gpu/drm/i915/intel_guc_submission.c
@@ -633,8 +633,6 @@ static void complete_preempt_context(struct intel_engine_cs *engine)
 
 	wait_for_guc_preempt_report(engine);
 	intel_write_status_page(engine, I915_GEM_HWS_PREEMPT_INDEX, 0);
-
-	execlists_clear_active(execlists, EXECLISTS_ACTIVE_PREEMPT);
 }
 
 /**
diff --git a/drivers/gpu/drm/i915/intel_lrc.c b/drivers/gpu/drm/i915/intel_lrc.c
index 8fd8de71c2b5..33b65608600c 100644
--- a/drivers/gpu/drm/i915/intel_lrc.c
+++ b/drivers/gpu/drm/i915/intel_lrc.c
@@ -563,8 +563,6 @@ static void complete_preempt_context(struct intel_engine_execlists *execlists)
 	__unwind_incomplete_requests(container_of(execlists,
 						  struct intel_engine_cs,
 						  execlists));
-
-	execlists_clear_active(execlists, EXECLISTS_ACTIVE_PREEMPT);
 }
 
 static void execlists_dequeue(struct intel_engine_cs *engine)
@@ -792,7 +790,7 @@ execlists_cancel_port_requests(struct intel_engine_execlists * const execlists)
 		port++;
 	}
 
-	execlists_user_end(execlists);
+	execlists->active = 0;
 }
 
 static void reset_csb_pointers(struct intel_engine_execlists *execlists)
@@ -838,6 +836,7 @@ static void execlists_cancel_requests(struct intel_engine_cs *engine)
 
 	/* Cancel the requests on the HW and clear the ELSP tracker. */
 	execlists_cancel_port_requests(execlists);
+	execlists_user_end(execlists);
 
 	/* Mark all executing requests as skipped. */
 	list_for_each_entry(rq, &engine->timeline.requests, link) {
-- 
2.18.0

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✓ Fi.CI.BAT: success for drm/i915/execlists: Always clear preempt status on cancelling all (rev3)

[Patchwork]

== Series Details ==

Series: drm/i915/execlists: Always clear preempt status on cancelling all (rev3)
URL   : https://patchwork.freedesktop.org/series/46528/
State : success

== Summary ==

= CI Bug Log - changes from CI_DRM_4489 -> Patchwork_9659 =

== Summary - SUCCESS ==

  No regressions found.

  External URL: https://patchwork.freedesktop.org/api/1.0/series/46528/revisions/3/mbox/

== Known issues ==

  Here are the changes found in Patchwork_9659 that come from known issues:

  === IGT changes ===

    ==== Issues hit ====

    igt@drv_module_reload@basic-reload:
      fi-glk-j4005:       PASS -> DMESG-WARN (fdo#106000)

    
    ==== Warnings ====

    igt@gem_exec_suspend@basic-s4-devices:
      {fi-kbl-8809g}:     INCOMPLETE (fdo#107139) -> DMESG-WARN (fdo#107139)

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

  fdo#106000 https://bugs.freedesktop.org/show_bug.cgi?id=106000
  fdo#107139 https://bugs.freedesktop.org/show_bug.cgi?id=107139


== Participating hosts (45 -> 41) ==

  Missing    (4): fi-hsw-peppy fi-ilk-m540 fi-byt-squawks fi-hsw-4200u 


== Build changes ==

    * Linux: CI_DRM_4489 -> Patchwork_9659

  CI_DRM_4489: d0b0c9150d280254d8ce7fcddaaf96132ac5ec62 @ git://anongit.freedesktop.org/gfx-ci/linux
  IGT_4558: d8e97e1710b27a3931a1c53d1dd88c0e709c085b @ git://anongit.freedesktop.org/xorg/app/intel-gpu-tools
  Patchwork_9659: 62ab42d10c501aa57195cb0fc3cfb2e10f3015b9 @ git://anongit.freedesktop.org/gfx-ci/linux


== Linux commits ==

62ab42d10c50 drm/i915/execlists: Always clear preempt status on cancelling all

== Logs ==

For more details see: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_9659/issues.html
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✓ Fi.CI.IGT: success for drm/i915/execlists: Always clear preempt status on cancelling all (rev3)

[Patchwork]

== Series Details ==

Series: drm/i915/execlists: Always clear preempt status on cancelling all (rev3)
URL   : https://patchwork.freedesktop.org/series/46528/
State : success

== Summary ==

= CI Bug Log - changes from CI_DRM_4489_full -> Patchwork_9659_full =

== Summary - WARNING ==

  Minor unknown changes coming with Patchwork_9659_full need to be verified
  manually.
  
  If you think the reported changes have nothing to do with the changes
  introduced in Patchwork_9659_full, please notify your bug team to allow them
  to document this new failure mode, which will reduce false positives in CI.

  

== Possible new issues ==

  Here are the unknown changes that may have been introduced in Patchwork_9659_full:

  === IGT changes ===

    ==== Warnings ====

    igt@gem_exec_schedule@reorder-wide-render:
      shard-glk:          SKIP -> PASS +37

    igt@gem_userptr_blits@map-fixed-invalidate:
      shard-apl:          SKIP -> PASS +37

    igt@kms_vblank@pipe-a-wait-busy:
      shard-snb:          SKIP -> PASS +1

    igt@perf_pmu@frequency:
      shard-kbl:          SKIP -> PASS +35

    
== Known issues ==

  Here are the changes found in Patchwork_9659_full that come from known issues:

  === IGT changes ===

    ==== Issues hit ====

    igt@drv_suspend@shrink:
      shard-glk:          PASS -> FAIL (fdo#106886)

    igt@gem_ctx_isolation@vcs0-s3:
      shard-kbl:          PASS -> INCOMPLETE (fdo#103665)

    igt@kms_flip@2x-plain-flip-fb-recreate-interruptible:
      shard-glk:          PASS -> FAIL (fdo#100368) +1

    igt@kms_setmode@basic:
      shard-apl:          PASS -> FAIL (fdo#99912)

    
    ==== Possible fixes ====

    igt@drv_missed_irq:
      shard-apl:          INCOMPLETE (fdo#103927) -> PASS +1
      shard-glk:          INCOMPLETE (k.org#198133, fdo#103359) -> PASS +1

    igt@drv_suspend@shrink:
      shard-snb:          INCOMPLETE (fdo#105411, fdo#106886) -> PASS

    igt@gem_exec_schedule@preempt-hang-bsd:
      shard-glk:          DMESG-FAIL -> PASS +3

    igt@gem_exec_schedule@preempt-hang-bsd1:
      shard-kbl:          DMESG-FAIL -> PASS +4

    igt@gem_exec_schedule@preempt-hang-render:
      shard-apl:          DMESG-FAIL -> PASS +3

    igt@kms_cursor_crc@cursor-256x256-suspend:
      shard-kbl:          INCOMPLETE (fdo#103665) -> PASS +2

    igt@kms_draw_crc@draw-method-xrgb2101010-blt-xtiled:
      shard-kbl:          FAIL -> PASS +1

    igt@kms_flip@2x-dpms-vs-vblank-race:
      shard-hsw:          FAIL (fdo#103060) -> PASS

    igt@kms_flip@plain-flip-ts-check-interruptible:
      shard-glk:          FAIL (fdo#100368) -> PASS +2

    igt@kms_frontbuffer_tracking@fbc-1p-shrfb-fliptrack:
      shard-glk:          FAIL -> PASS +8
      shard-kbl:          FAIL (fdo#106067) -> PASS +1

    igt@kms_plane_lowres@pipe-c-tiling-y:
      shard-kbl:          FAIL (fdo#106066) -> PASS +3

    igt@kms_rotation_crc@bad-pixel-format:
      shard-apl:          FAIL -> PASS +6

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

  fdo#100368 https://bugs.freedesktop.org/show_bug.cgi?id=100368
  fdo#103060 https://bugs.freedesktop.org/show_bug.cgi?id=103060
  fdo#103359 https://bugs.freedesktop.org/show_bug.cgi?id=103359
  fdo#103665 https://bugs.freedesktop.org/show_bug.cgi?id=103665
  fdo#103927 https://bugs.freedesktop.org/show_bug.cgi?id=103927
  fdo#105411 https://bugs.freedesktop.org/show_bug.cgi?id=105411
  fdo#106066 https://bugs.freedesktop.org/show_bug.cgi?id=106066
  fdo#106067 https://bugs.freedesktop.org/show_bug.cgi?id=106067
  fdo#106886 https://bugs.freedesktop.org/show_bug.cgi?id=106886
  fdo#99912 https://bugs.freedesktop.org/show_bug.cgi?id=99912
  k.org#198133 https://bugzilla.kernel.org/show_bug.cgi?id=198133


== Participating hosts (5 -> 5) ==

  No changes in participating hosts


== Build changes ==

    * Linux: CI_DRM_4489 -> Patchwork_9659

  CI_DRM_4489: d0b0c9150d280254d8ce7fcddaaf96132ac5ec62 @ git://anongit.freedesktop.org/gfx-ci/linux
  IGT_4558: d8e97e1710b27a3931a1c53d1dd88c0e709c085b @ git://anongit.freedesktop.org/xorg/app/intel-gpu-tools
  Patchwork_9659: 62ab42d10c501aa57195cb0fc3cfb2e10f3015b9 @ 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_9659/shards.html
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[PATCH] drm/i915/execlists: Always clear preempt status on cancelling all

[Chris Wilson]

On reset/wedging, we cancel all pending replies from the HW and we also
want to cancel an outstanding preemption event. Since we use the same
function to cancel the pending replies for reset and for a preemption
event, we can simply clear the active tracking for all.

v2: Keep execlists_user_end() markup for wedging

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
---
Email woes, so resending so we Tvrtko can ask his questions again.

The reason why I didn't use multiple execlists_clear_active() was
because there are multiple bits, and will be extended in future, that
gcc doesn't optimise well because they are being tweaked inside asm
volatile (and so untouched by gcc).

Keeping the user_end() is for later, where it means more than just
clearing the bit but is acted on for disabling RPS and the like.
-Chris
---
 drivers/gpu/drm/i915/intel_guc_submission.c | 2 --
 drivers/gpu/drm/i915/intel_lrc.c            | 5 ++---
 2 files changed, 2 insertions(+), 5 deletions(-)

diff --git a/drivers/gpu/drm/i915/intel_guc_submission.c b/drivers/gpu/drm/i915/intel_guc_submission.c
index cc444dc5f3ad..94d0674ea3c6 100644
--- a/drivers/gpu/drm/i915/intel_guc_submission.c
+++ b/drivers/gpu/drm/i915/intel_guc_submission.c
@@ -633,8 +633,6 @@ static void complete_preempt_context(struct intel_engine_cs *engine)
 
 	wait_for_guc_preempt_report(engine);
 	intel_write_status_page(engine, I915_GEM_HWS_PREEMPT_INDEX, 0);
-
-	execlists_clear_active(execlists, EXECLISTS_ACTIVE_PREEMPT);
 }
 
 /**
diff --git a/drivers/gpu/drm/i915/intel_lrc.c b/drivers/gpu/drm/i915/intel_lrc.c
index 6fef9d130d55..1fe5481470c3 100644
--- a/drivers/gpu/drm/i915/intel_lrc.c
+++ b/drivers/gpu/drm/i915/intel_lrc.c
@@ -563,8 +563,6 @@ static void complete_preempt_context(struct intel_engine_execlists *execlists)
 	__unwind_incomplete_requests(container_of(execlists,
 						  struct intel_engine_cs,
 						  execlists));
-
-	execlists_clear_active(execlists, EXECLISTS_ACTIVE_PREEMPT);
 }
 
 static void execlists_dequeue(struct intel_engine_cs *engine)
@@ -792,7 +790,7 @@ execlists_cancel_port_requests(struct intel_engine_execlists * const execlists)
 		port++;
 	}
 
-	execlists_user_end(execlists);
+	execlists->active = 0;
 }
 
 static void reset_csb_pointers(struct intel_engine_execlists *execlists)
@@ -843,6 +841,7 @@ static void execlists_cancel_requests(struct intel_engine_cs *engine)
 
 	/* Cancel the requests on the HW and clear the ELSP tracker. */
 	execlists_cancel_port_requests(execlists);
+	execlists_user_end(execlists);
 
 	/* Mark all executing requests as skipped. */
 	list_for_each_entry(rq, &engine->timeline.requests, link) {
-- 
2.18.0

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Re: [PATCH] drm/i915/execlists: Always clear preempt status on cancelling all

[Chris Wilson]

Quoting Chris Wilson (2018-07-16 11:47:27)
> On reset/wedging, we cancel all pending replies from the HW and we also
> want to cancel an outstanding preemption event. Since we use the same
> function to cancel the pending replies for reset and for a preemption
> event, we can simply clear the active tracking for all.
> 
> v2: Keep execlists_user_end() markup for wedging
> 

Fixes: 60a943245413 ("drm/i915/execlists: Drop clear_gtiir() on GPU reset")

> Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
-Chris
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