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From: Andi Shyti <andi@etezian.org>
To: Chris Wilson <chris@chris-wilson.co.uk>
Cc: intel-gfx@lists.freedesktop.org
Subject: Re: [Intel-gfx] [PATCH 2/5] drm/i915/gt: Restore ce->signal flush before releasing virtual engine
Date: Fri, 8 Jan 2021 17:54:28 +0200
Message-ID: <X/iANAEgWXF6YlXX@jack.zhora.eu> (raw)
In-Reply-To: <161011948741.28368.9687495779764618235@build.alporthouse.com>

> > > +void intel_context_remove_breadcrumbs(struct intel_context *ce,
> > > +                                   struct intel_breadcrumbs *b)
> > > +{
> > > +     struct i915_request *rq, *rn;
> > > +     bool release = false;
> > > +     unsigned long flags;
> > > +
> > > +     spin_lock_irqsave(&ce->signal_lock, flags);
> > > +
> > > +     if (list_empty(&ce->signals))
> > > +             goto unlock;
> > 
> > does "list_empty" need to be under lock or you've been lazy?
> 
> This check is required to be under the lock, we have to be careful about
> not calling remove_signaling_context() from here and signal_irq_work.
> I put the unlocked check in the caller to avoid the function call as well.

OK...

Reviewed-by: Andi Shyti <andi.shyti@intel.com>

Andi
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Thread overview: 29+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-01-07 22:17 [Intel-gfx] [PATCH 1/5] drm/i915/selftests: Skip unstable timing measurements Chris Wilson
2021-01-07 22:17 ` [Intel-gfx] [PATCH 2/5] drm/i915/gt: Restore ce->signal flush before releasing virtual engine Chris Wilson
2021-01-08 15:18   ` Andi Shyti
2021-01-08 15:24     ` Chris Wilson
2021-01-08 15:54       ` Andi Shyti [this message]
2021-01-07 22:17 ` [Intel-gfx] [PATCH 3/5] drm/i915/gt: Only retire on the last breadcrumb if the last request Chris Wilson
2021-01-08 15:55   ` Andi Shyti
2021-01-07 22:17 ` [Intel-gfx] [PATCH 4/5] drm/i915/gt: Only disable preemption on gen8 render engines Chris Wilson
2021-01-08 15:24   ` Andi Shyti
2021-01-07 22:17 ` [Intel-gfx] [PATCH 5/5] drm/i915/gt: Disable arbitration on no-preempt requests Chris Wilson
2021-01-08 15:27   ` Andi Shyti
2021-01-07 23:07 ` [Intel-gfx] ✗ Fi.CI.CHECKPATCH: warning for series starting with [1/5] drm/i915/selftests: Skip unstable timing measurements Patchwork
2021-01-07 23:09 ` [Intel-gfx] ✗ Fi.CI.SPARSE: " Patchwork
2021-01-07 23:38 ` [Intel-gfx] ✗ Fi.CI.BAT: failure " Patchwork
2021-01-08  0:16 ` [Intel-gfx] ✗ Fi.CI.CHECKPATCH: warning for series starting with [1/5] drm/i915/selftests: Skip unstable timing measurements (rev2) Patchwork
2021-01-08  0:18 ` [Intel-gfx] ✗ Fi.CI.SPARSE: " Patchwork
2021-01-08  0:45 ` [Intel-gfx] ✓ Fi.CI.BAT: success " Patchwork
2021-01-08  2:59 ` [Intel-gfx] ✓ Fi.CI.IGT: " Patchwork
2021-01-08 12:26 ` [Intel-gfx] [PATCH 1/5] drm/i915/selftests: Skip unstable timing measurements Andi Shyti
2021-01-08 13:26   ` Chris Wilson
2021-01-08 13:51     ` Andi Shyti
2021-01-08 13:54       ` Chris Wilson
2021-01-08 15:04         ` Andi Shyti
2021-01-08 13:28 ` [Intel-gfx] [PATCH] " Chris Wilson
2021-01-08 15:14   ` Chris Wilson
2021-01-08 15:25     ` Andi Shyti
2021-01-08 18:14 ` [Intel-gfx] ✗ Fi.CI.CHECKPATCH: warning for series starting with drm/i915/selftests: Skip unstable timing measurements (rev4) Patchwork
2021-01-08 18:16 ` [Intel-gfx] ✗ Fi.CI.SPARSE: " Patchwork
2021-01-08 18:45 ` [Intel-gfx] ✗ Fi.CI.BAT: failure " Patchwork

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