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sources/perf: Disable the broken i915 tracepoints for now.

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I need to build a new kernel and test the tracepoints, but disable
these for the moment to prevent people from getting surprising garbage
timelines.
This commit is contained in:
Eric Anholt
2018-05-17 14:46:51 +01:00
committed by Christian Hergert
parent 94bb2fba0d
commit 23a0cebfe2
1 changed files with 4 additions and 6 deletions
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10
lib/sources/sp-perf-source.c
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@ -85,17 +85,15 @@ static const SpOptionalTracepoint optional_tracepoints[] = {
/* I915 GPU execution.
*
* I don't know i915's model too well any more, but I think while
* there's an add that hasn't been retired (use the ring and seqno
* to correlate them, I think), then the GPU is busy. The retires
* may or may not be delayed a while if the CPU isn't currently
* blocking on the GPU -- I would think you'd get them driven from
* the done IRQ handler, but I haven't verified that.
* These are the wrong events to be watching. We need to use the
* ones under CONFIG_DRM_I915_LOW_LEVEL_TRACEPOINTS instead.
*/
#if 0
{ DRM_I915_BEGIN, "i915/i915_gem_request_add",
(const char *[]){ "ctx", "ring", "seqno", NULL } },
{ DRM_I915_END, "i915/i915_gem_request_retire",
(const char *[]){ "ctx", "ring", "seqno", NULL } },
#endif
};
/* Struct describing tracepoint events.