tree d53b7e37cf9ec6e33d1d0e9191bf2c81d36e2630
parent dffabc8f4ee3fce98821bc212bf3c5e31247e2b9
author Tvrtko Ursulin <tvrtko.ursulin@intel.com> 1487674980 +0000
committer Tvrtko Ursulin <tvrtko.ursulin@intel.com> 1487683105 +0000

drm/i915/tracepoints: Add backend level request in and out tracepoints

Two new tracepoints placed at the call sites where requests are
actually passed to the GPU enable userspace to track engine
utilisation.

These tracepoints are only enabled when the
DRM_I915_LOW_LEVEL_TRACEPOINTS Kconfig option is enabled.

v2: Fix compilation with !CONFIG_DRM_I915_LOW_LEVEL_TRACEPOINTS.

v3: Name global seqno consistently across tracepoints.

v4: Remove port info from request out tracepoint. (Chris Wilson)

Signed-off-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>