Hello,
I've recently come to test a 5.4 kernel on a rk3288 platform (T760),
and, as reported by many people on #panfrost, I've hit a page-fault
storm when running various GL apps.
This series tries to address the problems I could spot during my debug
session, with patch 7 being the most invasive change. I wish I
could find an easier way to fix the "BO mapping teared down while GPU
jobs referencing it are in-flight" problem, as I don't like tagging
complex changes for stable, but this is the best I could come up with.
Let me know if you have better ideas.
Regards,
Boris
Boris Brezillon (8):
drm/panfrost: Make panfrost_job_run() return an ERR_PTR() instead of
NULL
drm/panfrost: Fix a race in panfrost_ioctl_madvise()
drm/panfrost: Fix a BO leak in panfrost_ioctl_mmap_bo()
drm/panfrost: Fix a race in panfrost_gem_free_object()
drm/panfrost: Open/close the perfcnt BO
drm/panfrost: Make sure imported/exported BOs are never purged
drm/panfrost: Add the panfrost_gem_mapping concept
drm/panfrost: Make sure the shrinker does not reclaim referenced BOs
drivers/gpu/drm/panfrost/panfrost_drv.c | 132 +++++++++++--
drivers/gpu/drm/panfrost/panfrost_gem.c | 184 +++++++++++++++---
drivers/gpu/drm/panfrost/panfrost_gem.h | 51 ++++-
.../gpu/drm/panfrost/panfrost_gem_shrinker.c | 6 +-
drivers/gpu/drm/panfrost/panfrost_job.c | 22 ++-
drivers/gpu/drm/panfrost/panfrost_job.h | 1 +
drivers/gpu/drm/panfrost/panfrost_mmu.c | 61 +++---
drivers/gpu/drm/panfrost/panfrost_mmu.h | 6 +-
drivers/gpu/drm/panfrost/panfrost_perfcnt.c | 49 +++--
drivers/gpu/drm/panfrost/panfrost_perfcnt.h | 2 +-
10 files changed, 416 insertions(+), 98 deletions(-)
--
2.23.0
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