drm/i915: Refine tracepoints
A lot of minor tweaks to fix the tracepoints, improve the outputting for
ftrace, and to generally make the tracepoints useful again. It is a start
and enough to begin identifying performance issues and gaps in our
coverage.
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
diff --git a/drivers/gpu/drm/i915/intel_ringbuffer.h b/drivers/gpu/drm/i915/intel_ringbuffer.h
index 5e14b09..bd6a5fb 100644
--- a/drivers/gpu/drm/i915/intel_ringbuffer.h
+++ b/drivers/gpu/drm/i915/intel_ringbuffer.h
@@ -58,6 +58,7 @@
u32 irq_refcount;
u32 irq_mask;
u32 irq_seqno; /* last seq seem at irq time */
+ u32 trace_irq_seqno;
u32 waiting_seqno;
u32 sync_seqno[I915_NUM_RINGS-1];
bool __must_check (*irq_get)(struct intel_ring_buffer *ring);
@@ -186,6 +187,12 @@
u32 intel_ring_get_active_head(struct intel_ring_buffer *ring);
void intel_ring_setup_status_page(struct intel_ring_buffer *ring);
+static inline void i915_trace_irq_get(struct intel_ring_buffer *ring, u32 seqno)
+{
+ if (ring->trace_irq_seqno == 0 && ring->irq_get(ring))
+ ring->trace_irq_seqno = seqno;
+}
+
/* DRI warts */
int intel_render_ring_init_dri(struct drm_device *dev, u64 start, u32 size);