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| author | Chris Wilson <chris@chris-wilson.co.uk> | 2017-01-24 15:18:05 +0000 |
|---|---|---|
| committer | Chris Wilson <chris@chris-wilson.co.uk> | 2017-01-24 15:55:36 +0000 |
| commit | 538b257dae83268cc3536fb4c4ab4f57901d449d (patch) | |
| tree | 7b0e0db60b711a16c65d9b139a2aa3517619cd86 /drivers/gpu/drm/i915/intel_ringbuffer.h | |
| parent | 816ee798ec2b46b1f92aaebb1c7b5d2e1abdc43e (diff) | |
| download | lwn-538b257dae83268cc3536fb4c4ab4f57901d449d.tar.gz lwn-538b257dae83268cc3536fb4c4ab4f57901d449d.zip | |
drm/i915: Move breadcrumbs irq_posted up a level to engine
In the next patch, we will use the irq_posted technique for another
engine interrupt, rather than use two members for the atomic updates, we
can use two bits of one instead. First, we need to update the
breadcrumbs to use the new common engine->irq_posted.
v2: Use set_bit() rather than __set_bit() to ensure atomicity with
respect to other bits in the mask
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Mika Kuoppala <mika.kuoppala@intel.com>
Cc: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/20170124151805.26146-1-chris@chris-wilson.co.uk
Reviewed-by: Mika Kuoppala <mika.kuoppala@intel.com>
Diffstat (limited to 'drivers/gpu/drm/i915/intel_ringbuffer.h')
| -rw-r--r-- | drivers/gpu/drm/i915/intel_ringbuffer.h | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/drivers/gpu/drm/i915/intel_ringbuffer.h b/drivers/gpu/drm/i915/intel_ringbuffer.h index dbd32585f27a..a9ea84ea3155 100644 --- a/drivers/gpu/drm/i915/intel_ringbuffer.h +++ b/drivers/gpu/drm/i915/intel_ringbuffer.h @@ -211,6 +211,9 @@ struct intel_engine_cs { struct intel_render_state *render_state; + unsigned long irq_posted; +#define ENGINE_IRQ_BREADCRUMB 0 + /* Rather than have every client wait upon all user interrupts, * with the herd waking after every interrupt and each doing the * heavyweight seqno dance, we delegate the task (of being the @@ -229,7 +232,6 @@ struct intel_engine_cs { */ struct intel_breadcrumbs { struct task_struct __rcu *irq_seqno_bh; /* bh for interrupts */ - bool irq_posted; spinlock_t lock; /* protects the lists of requests; irqsafe */ struct rb_root waiters; /* sorted by retirement, priority */ |