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

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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>

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This commit is contained in:

Tvrtko Ursulin 2017-02-21 11:03:00 +00:00

parent dffabc8f4e

commit d7d96833f2

3 changed files with 53 additions and 0 deletions

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2

drivers/gpu/drm/i915/i915_guc_submission.c

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49

drivers/gpu/drm/i915/i915_trace.h

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2

drivers/gpu/drm/i915/intel_lrc.c

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