[igt-dev] [PATCH i-g-t v6 0/2] drmtest changes for running tests on multi-gpu

[Kamil Konieczny]

Allow to open other cards out of order with __drm_open_driver_another()
and also introduce helper for multi-gpu scenarios. There is still a problem
left when opening first device because it is useally already opened at
first fixture but I will leave that for later. With that it works
on four GPUs board, when first card is non-Intel one with no render
device:

sudo IGT_DEVICE=pci:vendor=Intel,device=discrete,card=all build/tests/xe_create --r multigpu-create-massive-size

Opened device: /dev/dri/card1
Starting subtest: multigpu-create-massive-size
<g:1> Opened device: /dev/dri/card2
<g:2> Opened device: /dev/dri/card3
<g:3> Opened device: /dev/dri/card4
Subtest multigpu-create-massive-size: SUCCESS (0.209s)

v2: dropped additional patch 2/3 ("lib/drmtest: add multigpu helpers")
  changed 3/3 RFC patch as additional subtest
v3: fixes in test (Zbigniew)
  fixes in drmlib functions (Zbigniew, Kamil)
v4: corrected test description (Kamil)
v5: restore boundary index for already opened device (Kamil)
v6: fixes in libdrm: start searching for driver from requested index,
    limit checks for already opened drivers to currently
    opened count (Kamil)

Cc: Zbigniew Kempczyński <zbigniew.kempczynski at intel.com>

Kamil Konieczny (2):
  lib/drmtest: allow out of order device opening
  tests/intel/xe_create: extend massive subtest to multi-gpu

 lib/drmtest.c           | 28 +++++++++++++++++++++++-----
 tests/intel/xe_create.c | 25 +++++++++++++++++++++++++
 2 files changed, 48 insertions(+), 5 deletions(-)

-- 
2.42.0