[i-g-t, v9, 0/3] tests/i915/pm_rc6_residency: Use sysfs to achieve peak frequency

[Sk Anirban]

Leverage IGT spinner to trigger frequency scaling and
set RPS minimum frequency to RP0 for achieving peak frequency.
This method replaces the existing waitboost mechanism used
to reach maximum frequency.
Restrict the power consumption test to GT0 alone, since we're
evaluating the power usage for the entire GPU at once.

v4: Cosmetic changes (Riana)
v6: Fix frequency restoration (Riana)
v7: Fix variable scope (Riana)
v8: Fix signal handler (Kamil)

Sk Anirban (3):
  HAX: Add rc6-idle tests to fast feedback list
  tests/intel/pm_rc6_residency: Use sysfs to achieve peak frequency
  tests/intel/pm_rc6_residency: Ensure that SLPC is enabled for test
    rc6-idle

 tests/intel-ci/fast-feedback.testlist |   1 +
 tests/intel/i915_pm_rc6_residency.c   | 120 +++++++++++++++++---------
 2 files changed, 82 insertions(+), 39 deletions(-)

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2.43.0