drm/i915: Add tracepoints

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By adding tracepoint equivalents for WATCH_BUF/EXEC we are able to monitor
the lifetimes of objects, requests and significant events. These events can
then be probed using the tracing frameworks, such as systemtap and, in
particular, perf.

For example to record the stack trace for every GPU stall during a run, use

  $ perf record -e i915:i915_gem_request_wait_begin -c 1 -g

And

  $ perf report

to view the results.

[Updated to fix compilation issues caused.]
Cc: Arjan van de Ven <arjan@linux.intel.com>
Cc: Ben Gamari <bgamari@gmail.com>
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>

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This commit is contained in:

Chris Wilson 2009-08-25 11:15:50 +01:00

parent 74dff28223

commit 1c5d22f76d

6 changed files with 447 additions and 16 deletions

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1

drivers/gpu/drm/i915/Makefile

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8

drivers/gpu/drm/i915/i915_dma.c

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117

drivers/gpu/drm/i915/i915_gem.c

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9

drivers/gpu/drm/i915/i915_irq.c

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315

drivers/gpu/drm/i915/i915_trace.h

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11

drivers/gpu/drm/i915/i915_trace_points.c

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