[Intel-gfx] [PATCH igt 0/8] Make kms_fbc_crc useful again

[Paulo Zanoni]

From: Paulo Zanoni <paulo.r.zanoni at intel.com>

After the recent IGT regressions and the FBC conversion to the
frontbuffer tracking infrastructure, kms_fbc_crc was not being that
useful anymore. So this series makes it useful again.

The first 2 patches are alternate forms of patches that I already sent
to the mailing list a few times. They are needed due to the Kernel FBC
changes. In the previous versions I was adding gem_sync() calls, but
now I'm just increasing the timeouts. I'm aware we want to have test
cases for both situations, but for now let's fix the ones we already
have with the least intrusive solution.

The other 6 patches are just for the CRC regression fix. Notice that
kms_fbc_crc is completely useless without this fix. Daniel has already
sent an earlier for this problem, but I believe my proposed solution
is more complete.

Of course, to make kms_fbc_crc actually useful we need to enable FBC
by default again, but we're not there yet.

Also notice that there's still no conversion to use lib/igt_draw, but
some of the reworks required by it are already on this series. I want
to land any possible conversion only after we fix the current known
regressions.

Thanks,
Paulo

Paulo Zanoni (8):
  tests/kms_fbc_crc: exec_nop() can also invalidate FBC
  tests/kms_fbc_crc: increase the FBC wait timeout
  tests/kms_fbc_crc: unify flip handling
  tests/kms_fbc_crc: refactor context handling code
  tests/kms_fbc_crc: extract check_crc()
  tests/kms_fbc_crc: make the blt test draw the same pattern
  tests/kms_fbc_crc: extract fill_mmap_{cpu,gtt}()
  tests/kms_fb_crc: fix the reference CRC checking

 tests/kms_fbc_crc.c | 193 +++++++++++++++++++++++++++++++++++-----------------
 1 file changed, 129 insertions(+), 64 deletions(-)

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2.1.4