Chris Wilson writes:
> Stop assuming we only get called with irqs-on for disarming the
> breadcrumbs, and do a full save/restore spin_lock_irq.
>
> Signed-off-by: Chris Wilson
> Cc: Mika Kuoppala
perf timer, drop ref, engine_unpark, disable_breadcrumbs
with irqs off.
Well, the trace on previous patch makes it clear,
for those who know the code...I had to read.
Reviewed-by: Mika Kuoppala
> ---
> drivers/gpu/drm/i915/gt/intel_breadcrumbs.c | 5 +++--
> 1 file changed, 3 insertions(+), 2 deletions(-)
>
> diff --git a/drivers/gpu/drm/i915/gt/intel_breadcrumbs.c
> b/drivers/gpu/drm/i915/gt/intel_breadcrumbs.c
> index 15bbdd8c7552..2bc9c460e78d 100644
> --- a/drivers/gpu/drm/i915/gt/intel_breadcrumbs.c
> +++ b/drivers/gpu/drm/i915/gt/intel_breadcrumbs.c
> @@ -67,14 +67,15 @@ static void __intel_breadcrumbs_disarm_irq(struct
> intel_breadcrumbs *b)
> void intel_engine_disarm_breadcrumbs(struct intel_engine_cs *engine)
> {
> struct intel_breadcrumbs *b = >breadcrumbs;
> + unsigned long flags;
>
> if (!b->irq_armed)
> return;
>
> - spin_lock_irq(>irq_lock);
> + spin_lock_irqsave(>irq_lock, flags);
> if (b->irq_armed)
> __intel_breadcrumbs_disarm_irq(b);
> - spin_unlock_irq(>irq_lock);
> + spin_unlock_irqrestore(>irq_lock, flags);
> }
>
> static inline bool __request_completed(const struct i915_request *rq)
> --
> 2.23.0.rc1
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