drm/amdkfd: simplify drain retry fault

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unmap range always increase atomic svms->drain_pagefaults to simplify
both parent range and child range unmap, page fault handle ignores the
retry fault if svms->drain_pagefaults is set to speed up interrupt
handling. svm_range_drain_retry_fault restart draining if another
range unmap from cpu.

Signed-off-by: Philip Yang <Philip.Yang@amd.com>
Reviewed-by: Felix Kuehling <Felix.Kuehling@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

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Philip Yang 2021-11-19 17:02:50 -05:00 • committed by Alex Deucher

parent 7ad153db58

commit 2e4477282c

2 changed files with 23 additions and 9 deletions

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2

drivers/gpu/drm/amd/amdkfd/kfd_priv.h

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30

drivers/gpu/drm/amd/amdkfd/kfd_svm.c

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