899fbde1464639e3d12eaffdad8481a59b367fcb is the first bad commit
commit 899fbde1464639e3d12eaffdad8481a59b367fcb
Author: Philip Yang <[email protected]>
Date: Thu Dec 13 15:35:28 2018 -0500
drm/amdgpu: replace get_user_pages with HMM mirror helpers
Use HMM helper function hmm_vma_fault() to get physical pages backing
userptr and start CPU page table update track of those pages. Then use
hmm_vma_range_done() to check if those pages are updated before
amdgpu_cs_submit for gfx or before user queues are resumed for kfd.
If userptr pages are updated, for gfx, amdgpu_cs_ioctl will restart
from scratch, for kfd, restore worker is rescheduled to retry.
HMM simplify the CPU page table concurrent update check, so remove
guptasklock, mmu_invalidations, last_set_pages fields from
amdgpu_ttm_tt struct.
HMM does not pin the page (increase page ref count), so remove related
operations like release_pages(), put_page(), mark_page_dirty().
Signed-off-by: Philip Yang <[email protected]>
Reviewed-by: Felix Kuehling <[email protected]>
Reviewed-by: Christian König <[email protected]>
Signed-off-by: Alex Deucher <[email protected]>
:040000 040000 0c9f0e2e82e5e4d2d3a4c0daea22eb911244b771
fdcdc7c80f5383486962edf4561e205b55bd8c21 M drivers
$ git bisect log
# bad: [f74c2bb98776e2de508f4d607cd519873065118e] Linux 5.3-rc8
# good: [1c163f4c7b3f621efff9b28a47abb36f7378d783] Linux 5.0
git bisect start 'v5.3-rc8' 'v5.0'
# good: [a2d635decbfa9c1e4ae15cb05b68b2559f7f827c] Merge tag
'drm-next-2019-05-09' of git://anongit.freedesktop.org/drm/drm
git bisect good a2d635decbfa9c1e4ae15cb05b68b2559f7f827c
# good: [a2d635decbfa9c1e4ae15cb05b68b2559f7f827c] Merge tag
'drm-next-2019-05-09' of git://anongit.freedesktop.org/drm/drm
git bisect good a2d635decbfa9c1e4ae15cb05b68b2559f7f827c
# good: [8f6ccf6159aed1f04c6d179f61f6fb2691261e84] Merge tag 'clone3-v5.3' of
git://git.kernel.org/pub/scm/linux/kernel/git/brauner/linux
git bisect good 8f6ccf6159aed1f04c6d179f61f6fb2691261e84
# good: [8f6ccf6159aed1f04c6d179f61f6fb2691261e84] Merge tag 'clone3-v5.3' of
git://git.kernel.org/pub/scm/linux/kernel/git/brauner/linux
git bisect good 8f6ccf6159aed1f04c6d179f61f6fb2691261e84
# bad: [be8454afc50f43016ca8b6130d9673bdd0bd56ec] Merge tag
'drm-next-2019-07-16' of git://anongit.freedesktop.org/drm/drm
git bisect bad be8454afc50f43016ca8b6130d9673bdd0bd56ec
# bad: [be8454afc50f43016ca8b6130d9673bdd0bd56ec] Merge tag
'drm-next-2019-07-16' of git://anongit.freedesktop.org/drm/drm
git bisect bad be8454afc50f43016ca8b6130d9673bdd0bd56ec
# good: [d72619706abc4aa7e540ea882dae883cee7cc3b3] Merge tag 'tty-5.3-rc1' of
git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty
git bisect good d72619706abc4aa7e540ea882dae883cee7cc3b3
# bad: [83145f110eb2ada9d54fcbcf416c02de126381c1] drm/amdgpu: don't invalidate
caches in RELEASE_MEM, only do the writeback
git bisect bad 83145f110eb2ada9d54fcbcf416c02de126381c1
# bad: [b239c01727459ba08c44b79e6225d3c58723f282] drm/amdgpu: add mcbp driver
parameter
git bisect bad b239c01727459ba08c44b79e6225d3c58723f282
# good: [e1dc68a4b149d47536cd001d0d0abadbb62d37bd] drm: atmel-hlcdc: avoid
initializing cfg with zero
git bisect good e1dc68a4b149d47536cd001d0d0abadbb62d37bd
# bad: [c53e4db71276bf257b09010935a04bdafddd458e] drm/amdgpu: cancel
late_init_work before gpu reset
git bisect bad c53e4db71276bf257b09010935a04bdafddd458e
# good: [2da4605dce38b84cd2e5b86686f43adae1b2cacb] drm/amd/display: Use DCN
functions instead of DCE
git bisect good 2da4605dce38b84cd2e5b86686f43adae1b2cacb
# bad: [1c1e53f7f2ce191e6787d3d0648fe8ce7088ceaa] drm/amd/doc: Add XGMI sysfs
documentation
git bisect bad 1c1e53f7f2ce191e6787d3d0648fe8ce7088ceaa
# good: [89cd9d23e9a74d94f0db5bbbaf2ef1f6ede36ae5] drm/amdkfd: avoid HMM change
cause circular lock
git bisect good 89cd9d23e9a74d94f0db5bbbaf2ef1f6ede36ae5
# bad: [0803e7a9e850f9d6397c594d6c6deac9b2b6d696] drm/amdkfd: Allocate hiq and
sdma mqd from mqd trunk
git bisect bad 0803e7a9e850f9d6397c594d6c6deac9b2b6d696
# bad: [972fcdb52fe865a2f639e3200b97e648f34a0f41] drm/amdkfd: Introduce
asic-specific mqd_manager_init function
git bisect bad 972fcdb52fe865a2f639e3200b97e648f34a0f41
# bad: [6c55d6e90e68a4789cbd72a0287026d4dfb4a9f9] drm/amdkfd: support
concurrent userptr update for HMM
git bisect bad 6c55d6e90e68a4789cbd72a0287026d4dfb4a9f9
# bad: [ad595b8634f36f04bf69bef4eff854091d94f8b3] drm/amdgpu: fix HMM config
dependency issue
git bisect bad ad595b8634f36f04bf69bef4eff854091d94f8b3
# bad: [899fbde1464639e3d12eaffdad8481a59b367fcb] drm/amdgpu: replace
get_user_pages with HMM mirror helpers
git bisect bad 899fbde1464639e3d12eaffdad8481a59b367fcb
# first bad commit: [899fbde1464639e3d12eaffdad8481a59b367fcb] drm/amdgpu:
replace get_user_pages with HMM mirror helpers
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https://bugs.launchpad.net/bugs/1844962
Title:
apparent memory usage regression - not getting freed?
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