[igt-dev] [RFC PATCH v3 0/8] Add multi-process subtests for multi-GPUs

[Kamil Konieczny]

Add one simple macro igt_fork_dyn() and two new helpers in
igt_core to enable running dynamic tests on two or more GPUs in
parallel.
To test this idea I added two subtests gem_basic at create-close
and gem_exec_gttfill at multigpu-basic.
It is open-coded for ease of debug but can be converted
into macro if this idea will get acceptance.

v3: added log for opened device extension from Mauro with
  some modifications
  added tests for fork_dyn so it works as igt_fork
  added prefix log to help debug problems
  rework gttfill multigpu-basic subtest

See some logs below.

Cc: Anna Karas <anna.karas at intel.com>
Cc: Zbigniew Kempczyński <zbigniew.kempczynski at intel.com>
Cc: Mauro Carvalho Chehab <mauro.chehab at linux.intel.com>
Cc: Petri Latvala <petri.latvala at intel.com>

Starting subtest: multigpu-basic
<g:0> Setup 1025 batches in 3398.88ms
<g:1> Setup 1025 batches in 3392.46ms
[..skipped..]
<g:0> Total: 33 cycles
<g:1> Total: 33 cycles
Subtest multigpu-basic: SUCCESS (36.248s)

Kamil Konieczny (7):
  lib/igt_core: add fork for dynamic tests
  lib/igt_core: add prefix to logging
  lib/tests/igt_fork: add tests for igt_fork_dyn
  lib/tests/igt_fork: change comments into prints
  tests/i915/gem_basic: add multi-gpu tests
  tests/i915/gem_exec_gttfill: add new subtest multigpu-basic
  HAX test few multi-gpu subtests

Mauro Carvalho Chehab (1):
  lib/igt_core: store GPU string or opened device name

 lib/drmtest.c                         |   4 +-
 lib/igt_core.c                        | 248 ++++++++++++++++++++++++--
 lib/igt_core.h                        |  27 +++
 lib/tests/igt_fork.c                  |  93 +++++++---
 tests/i915/gem_basic.c                |  28 ++-
 tests/i915/gem_exec_gttfill.c         |  31 +++-
 tests/intel-ci/fast-feedback.testlist | 176 +-----------------
 7 files changed, 386 insertions(+), 221 deletions(-)

-- 
2.34.1