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    • Daniel Vetter's avatar
      lib: Add igt_subtest_group · 72d04b84
      Daniel Vetter authored
      Useful for creating common setup code in igt_fixture which is only
      needed by a subset of tests. And since I'm a good citizen it comes
      with a library testcase/example included.
      
      v2: Make testcase nastier to ensure a subtest group SKIPS when it's
      parent is skipping already. I accidentally got this right, but let's
      make sure.
      Signed-off-by: Daniel Vetter's avatarDaniel Vetter <daniel.vetter@ffwll.ch>
      72d04b84
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    • Ben Widawsky's avatar
      intel_gpu_frequency: A tool to manipulate Intel GPU frequency · 5fb26d14
      Ben Widawsky authored
      WARNING: very minimally tested
      
      In general you should not need this tool. Its primary purpose is for
      benchmarking, and for debugging performance issues.
      
      For many kernel releases now sysfs has supported reading and writing the GPU
      frequency. Therefore, this tool provides no new functionality. What it does
      provide is an easy to package (for distros) tool that handles the most common
      scenarios.
      
      v2:
      Get rid of -f from the usage message (Jordan)
      Add space before [-s (Jordan)
      Add a -c/--custom example (Jordan)
      Add a setting for resetting to hardware default (Ken)
      Replicate examples in commit message in the source code. (me)
      
      v3:
      Its not It's (me)
      Add --help/-h to usage
      Add Version + man page
      Rename tool to intel_gpu_frequency, from intel_frequency
      Remove "sudo" from the examples
      Signed-off-by: 's avatarBen Widawsky <ben@bwidawsk.net>
      Reviewed-by: Jordan Justen's avatarJordan Justen <jordan.l.justen@intel.com>
      Cc: Kenneth Graunke <kenneth@whitecape.org>
      
      Here are some sample usages:
      $ intel_gpu_frequency --get=cur,min,max,eff
      cur: 200 MHz
      min: 200 MHz
      RP1: 200 MHz
      max: 1200 MHz
      
      $ intel_gpu_frequency -g
      cur: 200 MHz
      min: 200 MHz
      RP1: 200 MHz
      max: 1200 MHz
      
      $ intel_gpu_frequency -geff
      RP1: 200 MHz
      
      $ intel_gpu_frequency --set min=300
      $ intel_gpu_frequency --get min
      cur: 300 MHz
      min: 300 MHz
      RP1: 200 MHz
      max: 1200 MHz
      
      $ intel_gpu_frequency --custom max=900
      $ intel_gpu_frequency --get max
      cur: 300 MHz
      min: 300 MHz
      RP1: 200 MHz
      max: 900 MHz
      
      $ intel_gpu_frequency --max
      $ intel_gpu_frequency -g
      cur: 1200 MHz
      min: 1200 MHz
      RP1: 200 MHz
      max: 1200 MHz
      
      $ intel_gpu_frequency -e
      $ intel_gpu_frequency -g
      cur: 200 MHz
      min: 200 MHz
      RP1: 200 MHz
      max: 200 MHz
      
      $ intel_gpu_frequency --max
      $ intel_gpu_frequency -g
      cur: 1200 MHz
      min: 1200 MHz
      RP1: 200 MHz
      max: 1200 MHz
      
      $ intel_gpu_frequency --min
      $ intel_gpu_frequency -g
      cur: 200 MHz
      min: 200 MHz
      RP1: 200 MHz
      max: 200 MHz
      5fb26d14
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