diff options
| author | Chris Wilson <chris@chris-wilson.co.uk> | 2013-09-25 11:43:28 +0100 |
|---|---|---|
| committer | Daniel Vetter <daniel.vetter@ffwll.ch> | 2013-10-01 07:45:24 +0200 |
| commit | b52b89da097896ac265d1f875aeb0bfd92a9dd38 (patch) | |
| tree | 16cb9ff966426839a8894ce0d974934ff878e7a0 /drivers/gpu/drm/i915/i915_trace.h | |
| parent | f56383cb9fc8d7165bd7d2136b4c4af98c41177c (diff) | |
drm/i915: Add a tracepoint for using a semaphore
So that we can find the callers who introduce a ring stall. A single
ring stall is not too unwelcome, the right issue becomes when they start
to interlock and prevent any concurrent work. That, however, is a little
tricker to detect with a mere tracepoint!
v2: Rebrand it as a ring event, rather than an object event.
v3: Include the seqno in the tracepoint for posterity or something.
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Diffstat (limited to 'drivers/gpu/drm/i915/i915_trace.h')
| -rw-r--r-- | drivers/gpu/drm/i915/i915_trace.h | 26 |
1 files changed, 26 insertions, 0 deletions
diff --git a/drivers/gpu/drm/i915/i915_trace.h b/drivers/gpu/drm/i915/i915_trace.h index daa6fdf4d8ba..6e580c98dede 100644 --- a/drivers/gpu/drm/i915/i915_trace.h +++ b/drivers/gpu/drm/i915/i915_trace.h @@ -248,6 +248,32 @@ TRACE_EVENT(i915_gem_evict_vm, TP_printk("dev=%d, vm=%p", __entry->vm->dev->primary->index, __entry->vm) ); +TRACE_EVENT(i915_gem_ring_sync_to, + TP_PROTO(struct intel_ring_buffer *from, + struct intel_ring_buffer *to, + u32 seqno), + TP_ARGS(from, to, seqno), + + TP_STRUCT__entry( + __field(u32, dev) + __field(u32, sync_from) + __field(u32, sync_to) + __field(u32, seqno) + ), + + TP_fast_assign( + __entry->dev = from->dev->primary->index; + __entry->sync_from = from->id; + __entry->sync_to = to->id; + __entry->seqno = seqno; + ), + + TP_printk("dev=%u, sync-from=%u, sync-to=%u, seqno=%u", + __entry->dev, + __entry->sync_from, __entry->sync_to, + __entry->seqno) +); + TRACE_EVENT(i915_gem_ring_dispatch, TP_PROTO(struct intel_ring_buffer *ring, u32 seqno, u32 flags), TP_ARGS(ring, seqno, flags), |