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From: Chris Wilson <chris@chris-wilson.co.uk>
To: intel-gfx@lists.freedesktop.org
Subject: [PATCH] drm/i915: Serialise i915_active_wait() with its retirement
Date: Fri, 29 Nov 2019 09:39:08 +0000	[thread overview]
Message-ID: <20191129093908.631527-1-chris@chris-wilson.co.uk> (raw)

As the i915_active.retire() may be running on another CPU as we detect
that the i915_active is idle, we may not wait for the retirement itself.
Wait for the remote callback by waiting for the retirement worker.

Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=112424
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
---
 drivers/gpu/drm/i915/i915_active.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/gpu/drm/i915/i915_active.c b/drivers/gpu/drm/i915/i915_active.c
index 479195ecbc6c..e8630ee33336 100644
--- a/drivers/gpu/drm/i915/i915_active.c
+++ b/drivers/gpu/drm/i915/i915_active.c
@@ -469,6 +469,7 @@ int i915_active_wait(struct i915_active *ref)
 	if (wait_var_event_interruptible(ref, i915_active_is_idle(ref)))
 		return -EINTR;
 
+	flush_work(&ref->work);
 	return 0;
 }
 
-- 
2.24.0

_______________________________________________
Intel-gfx mailing list
Intel-gfx@lists.freedesktop.org
https://lists.freedesktop.org/mailman/listinfo/intel-gfx

WARNING: multiple messages have this Message-ID (diff)
From: Chris Wilson <chris@chris-wilson.co.uk>
To: intel-gfx@lists.freedesktop.org
Subject: [Intel-gfx] [PATCH] drm/i915: Serialise i915_active_wait() with its retirement
Date: Fri, 29 Nov 2019 09:39:08 +0000	[thread overview]
Message-ID: <20191129093908.631527-1-chris@chris-wilson.co.uk> (raw)
Message-ID: <20191129093908.VuNUfTZZ22BRCellCRAHqQZhdT0Tzx2WZWecXTI6c1s@z> (raw)

As the i915_active.retire() may be running on another CPU as we detect
that the i915_active is idle, we may not wait for the retirement itself.
Wait for the remote callback by waiting for the retirement worker.

Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=112424
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
---
 drivers/gpu/drm/i915/i915_active.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/gpu/drm/i915/i915_active.c b/drivers/gpu/drm/i915/i915_active.c
index 479195ecbc6c..e8630ee33336 100644
--- a/drivers/gpu/drm/i915/i915_active.c
+++ b/drivers/gpu/drm/i915/i915_active.c
@@ -469,6 +469,7 @@ int i915_active_wait(struct i915_active *ref)
 	if (wait_var_event_interruptible(ref, i915_active_is_idle(ref)))
 		return -EINTR;
 
+	flush_work(&ref->work);
 	return 0;
 }
 
-- 
2.24.0

_______________________________________________
Intel-gfx mailing list
Intel-gfx@lists.freedesktop.org
https://lists.freedesktop.org/mailman/listinfo/intel-gfx

             reply	other threads:[~2019-11-29  9:39 UTC|newest]

Thread overview: 10+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-11-29  9:39 Chris Wilson [this message]
2019-11-29  9:39 ` [Intel-gfx] [PATCH] drm/i915: Serialise i915_active_wait() with its retirement Chris Wilson
2019-11-29 10:42 ` ✗ Fi.CI.BAT: failure for " Patchwork
2019-11-29 10:42   ` [Intel-gfx] " Patchwork
2019-11-29 11:15 ` [PATCH] " Tvrtko Ursulin
2019-11-29 11:15   ` [Intel-gfx] " Tvrtko Ursulin
2019-11-29 11:28   ` Chris Wilson
2019-11-29 11:28     ` [Intel-gfx] " Chris Wilson
2019-11-29 11:38     ` Tvrtko Ursulin
2019-11-29 11:38       ` [Intel-gfx] " Tvrtko Ursulin

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