diff options
| author | Chris Wilson <chris@chris-wilson.co.uk> | 2017-02-17 18:13:00 +0300 |
|---|---|---|
| committer | Chris Wilson <chris@chris-wilson.co.uk> | 2017-02-17 18:30:50 +0300 |
| commit | 2246bea6cf773552106d98ab31ba7952c4ddb3f9 (patch) | |
| tree | 3d565a27d2d757f3d58b1f792e6227c82421f746 /drivers/gpu/drm/i915/i915_irq.c | |
| parent | 3bb56da78153150d72c67ceb8b7df49f36ae269c (diff) | |
| download | linux-2246bea6cf773552106d98ab31ba7952c4ddb3f9.tar.xz | |
drm/i915: Postpone fake breadcrumb interrupt until real interrupts cease
When the timer expires for checking on interrupt processing, check to
see if any interrupts arrived within the last time period. If real
interrupts are still being delivered, we can be reassured that we
haven't missed the final interrupt as the waiter will still be woken.
Only once all activity ceases, do we have to worry about the waiter
never being woken and so need to install a timer to kick the waiter for
a slow arrival of a seqno.
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Reviewed-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/20170217151304.16665-2-chris@chris-wilson.co.uk
Diffstat (limited to 'drivers/gpu/drm/i915/i915_irq.c')
| -rw-r--r-- | drivers/gpu/drm/i915/i915_irq.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/gpu/drm/i915/i915_irq.c b/drivers/gpu/drm/i915/i915_irq.c index 0d8ebd147da6..0657ac44a582 100644 --- a/drivers/gpu/drm/i915/i915_irq.c +++ b/drivers/gpu/drm/i915/i915_irq.c @@ -1033,6 +1033,7 @@ static void ironlake_rps_change_irq_handler(struct drm_i915_private *dev_priv) static void notify_ring(struct intel_engine_cs *engine) { + atomic_inc(&engine->irq_count); set_bit(ENGINE_IRQ_BREADCRUMB, &engine->irq_posted); if (intel_engine_wakeup(engine)) trace_i915_gem_request_notify(engine); |