[Intel-gfx] [PATCH I-g-t V4 0/2] Tests: Add test cases based on multi drm_fd to test sync

[Zhao Yakui]

This follows Daniel's advice to add the two test cases based on multi drm_fd to 
test the ring sync and CPU<->GPU sync.
The Broadwell GT3 machine has two independent BSD rings that can be used
to process the video commands. This is implemented in kernel driver and transparent
to the user-space. But we still need to check the ring sync and CPU<->GPU sync for
the second BSD ring. Two tests are created based on the multi drm_fds to
test the sync. Multi drm_fd can assure that the second BSD ring has the opportunity
to dispatch the GPU command. 

V1->V2: Follow Daniel's comment to add one subtext instead of one individual
test case, which is used to test the CPU<->GPU sync under multi BSD rings/

V2->V3: Follow Imre's comment to remove the unnecessary initialization and
use igt_assert_f instead of igt_assert

V3->V4: Add gem_multi_bsd_sync_loop.c into the tests/.gitignore

Zhao Yakui (2):
  tests: Add one ring sync case based on multi drm_fd to test ring
    semaphore sync under multi BSD rings
  tests/gem_dummy_reloc_loop: Add one subtest based on multi drm_fd to
    test CPU<->GPU sync under multi BSD rings

 tests/.gitignore                |    1 +
 tests/Makefile.sources          |    1 +
 tests/gem_dummy_reloc_loop.c    |  107 +++++++++++++++++++++++-
 tests/gem_multi_bsd_sync_loop.c |  175 +++++++++++++++++++++++++++++++++++++++
 4 files changed, 283 insertions(+), 1 deletion(-)
 create mode 100644 tests/gem_multi_bsd_sync_loop.c

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1.7.10.1