This app is required for debug features which seem to (undocumented)
reset themselves if/when the GT goes to sleep.
It is also useful for those doing general debugging or profiling from
userspace when they do not wish to have the GT sleep.
v2: made forcewaked more daemon-like
Cc: Chris Wilson <chris@chris-wilson.co.uk>
It has been supersede by intel_error_decode for the user-facing role of
obtaining debug info after a crash.
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
This is something I sometimes want to do in testing, to see if a
mystery bug (say, 29172) is due to broken clock gating. Sadly, in
this case it isn't. Note that it isn't supported on non-ILK chipsets
yet.
Rather than add yet another decoder into the drivers, I rather just emit
a binary blob and use the decoder being developed here.
As it is a pure debugging feature, lets not package it.
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
This is a handy tool to just check state of one register, which might
not bother to be included in intel_reg_dumper tool. And also take in Ben's
original full range register dump with '-f' option.
Signed-off-by: Zhenyu Wang <zhenyuw@linux.intel.com>
Introduce a second decoder that simpler operates on a file so that it
can be run on dumped batchbuffers independent of the gpu.
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
A simple variant on time crossed with intel_gpu_top to estimate the
amount of GPU activity during a program's execution time.
The resource usage (sys+user, i.e. CPU %) is for the child, but the
GPU measure is global. Hmm.
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Right now it requires a filename on the command line, (such as
/debug/dri/0/i915_batchbuffers). We plan to make it smarter in
the future by going out and collecting all the data it needs.
