Commit Graph

180 Commits

Author SHA1 Message Date
Mukul Joshi 818b032433 drm/amdkfd: sparse: Fix warning in reading SDMA counters
Add __user annotation to fix related sparse warning while reading
SDMA counters from userland.
Also, rework the read SDMA counters function by removing redundant
checks.

Reported-by: kernel test robot <lkp@intel.com>
Signed-off-by: Mukul Joshi <mukul.joshi@amd.com>
Reviewed-by: Felix Kuehling <Felix.Kuehling@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2020-08-24 12:22:32 -04:00
Christian König f1403342eb drm/amdgpu: revert "fix system hang issue during GPU reset"
The whole approach wasn't thought through till the end.

We already had a reset lock like this in the past and it caused the same problems like this one.

Completely revert the patch for now and add individual trylock protection to the hardware access functions as necessary.

This reverts commit df9c8d1aa2.

Signed-off-by: Christian König <christian.koenig@amd.com>
Acked-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2020-08-14 16:22:40 -04:00
Dennis Li df9c8d1aa2 drm/amdgpu: fix system hang issue during GPU reset
when GPU hang, driver has multi-paths to enter amdgpu_device_gpu_recover,
the atomic adev->in_gpu_reset and hive->in_reset are used to avoid
re-entering GPU recovery.

During GPU reset and resume, it is unsafe that other threads access GPU,
which maybe cause GPU reset failed. Therefore the new rw_semaphore
adev->reset_sem is introduced, which protect GPU from being accessed by
external threads during recovery.

v2:
1. add rwlock for some ioctls, debugfs and file-close function.
2. change to use dqm->is_resetting and dqm_lock for protection in kfd
driver.
3. remove try_lock and change adev->in_gpu_reset as atomic, to avoid
re-enter GPU recovery for the same GPU hang.

v3:
1. change back to use adev->reset_sem to protect kfd callback
functions, because dqm_lock couldn't protect all codes, for example:
free_mqd must be called outside of dqm_lock;

[ 1230.176199] Hardware name: Supermicro SYS-7049GP-TRT/X11DPG-QT, BIOS 3.1 05/23/2019
[ 1230.177221] Call Trace:
[ 1230.178249]  dump_stack+0x98/0xd5
[ 1230.179443]  amdgpu_virt_kiq_reg_write_reg_wait+0x181/0x190 [amdgpu]
[ 1230.180673]  gmc_v9_0_flush_gpu_tlb+0xcc/0x310 [amdgpu]
[ 1230.181882]  amdgpu_gart_unbind+0xa9/0xe0 [amdgpu]
[ 1230.183098]  amdgpu_ttm_backend_unbind+0x46/0x180 [amdgpu]
[ 1230.184239]  ? ttm_bo_put+0x171/0x5f0 [ttm]
[ 1230.185394]  ttm_tt_unbind+0x21/0x40 [ttm]
[ 1230.186558]  ttm_tt_destroy.part.12+0x12/0x60 [ttm]
[ 1230.187707]  ttm_tt_destroy+0x13/0x20 [ttm]
[ 1230.188832]  ttm_bo_cleanup_memtype_use+0x36/0x80 [ttm]
[ 1230.189979]  ttm_bo_put+0x1be/0x5f0 [ttm]
[ 1230.191230]  amdgpu_bo_unref+0x1e/0x30 [amdgpu]
[ 1230.192522]  amdgpu_amdkfd_free_gtt_mem+0xaf/0x140 [amdgpu]
[ 1230.193833]  free_mqd+0x25/0x40 [amdgpu]
[ 1230.195143]  destroy_queue_cpsch+0x1a7/0x270 [amdgpu]
[ 1230.196475]  pqm_destroy_queue+0x105/0x260 [amdgpu]
[ 1230.197819]  kfd_ioctl_destroy_queue+0x37/0x70 [amdgpu]
[ 1230.199154]  kfd_ioctl+0x277/0x500 [amdgpu]
[ 1230.200458]  ? kfd_ioctl_get_clock_counters+0x60/0x60 [amdgpu]
[ 1230.201656]  ? tomoyo_file_ioctl+0x19/0x20
[ 1230.202831]  ksys_ioctl+0x98/0xb0
[ 1230.204004]  __x64_sys_ioctl+0x1a/0x20
[ 1230.205174]  do_syscall_64+0x5f/0x250
[ 1230.206339]  entry_SYSCALL_64_after_hwframe+0x49/0xbe

2. remove try_lock and introduce atomic hive->in_reset, to avoid
re-enter GPU recovery.

v4:
1. remove an unnecessary whitespace change in kfd_chardev.c
2. remove comment codes in amdgpu_device.c
3. add more detailed comment in commit message
4. define a wrap function amdgpu_in_reset

v5:
1. Fix some style issues.

Reviewed-by: Hawking Zhang <Hawking.Zhang@amd.com>
Suggested-by: Andrey Grodzovsky <andrey.grodzovsky@amd.com>
Suggested-by: Christian König <christian.koenig@amd.com>
Suggested-by: Felix Kuehling <Felix.Kuehling@amd.com>
Suggested-by: Lijo Lazar <Lijo.Lazar@amd.com>
Suggested-by: Luben Tukov <luben.tuikov@amd.com>
Signed-off-by: Dennis Li <Dennis.Li@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2020-07-27 16:21:37 -04:00
Chengming Gui de89b2e456 drm/amdkfd: Support navy_flounder KFD
Add KFD support for Navy Flounder.

Signed-off-by: Chengming Gui <Jack.Gui@amd.com>
Reviewed-by: Tao Zhou <tao.zhou1@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2020-07-15 12:46:55 -04:00
Mukul Joshi d69fd951e6 drm/amdkfd: Fix circular locking dependency warning
[  150.887733] ======================================================
[  150.893903] WARNING: possible circular locking dependency detected
[  150.905917] ------------------------------------------------------
[  150.912129] kfdtest/4081 is trying to acquire lock:
[  150.917002] ffff8f7f3762e118 (&mm->mmap_sem#2){++++}, at:
                                 __might_fault+0x3e/0x90
[  150.924490]
               but task is already holding lock:
[  150.930320] ffff8f7f49d229e8 (&dqm->lock_hidden){+.+.}, at:
                                destroy_queue_cpsch+0x29/0x210 [amdgpu]
[  150.939432]
               which lock already depends on the new lock.

[  150.947603]
               the existing dependency chain (in reverse order) is:
[  150.955074]
               -> #3 (&dqm->lock_hidden){+.+.}:
[  150.960822]        __mutex_lock+0xa1/0x9f0
[  150.964996]        evict_process_queues_cpsch+0x22/0x120 [amdgpu]
[  150.971155]        kfd_process_evict_queues+0x3b/0xc0 [amdgpu]
[  150.977054]        kgd2kfd_quiesce_mm+0x25/0x60 [amdgpu]
[  150.982442]        amdgpu_amdkfd_evict_userptr+0x35/0x70 [amdgpu]
[  150.988615]        amdgpu_mn_invalidate_hsa+0x41/0x60 [amdgpu]
[  150.994448]        __mmu_notifier_invalidate_range_start+0xa4/0x240
[  151.000714]        copy_page_range+0xd70/0xd80
[  151.005159]        dup_mm+0x3ca/0x550
[  151.008816]        copy_process+0x1bdc/0x1c70
[  151.013183]        _do_fork+0x76/0x6c0
[  151.016929]        __x64_sys_clone+0x8c/0xb0
[  151.021201]        do_syscall_64+0x4a/0x1d0
[  151.025404]        entry_SYSCALL_64_after_hwframe+0x49/0xbe
[  151.030977]
               -> #2 (&adev->notifier_lock){+.+.}:
[  151.036993]        __mutex_lock+0xa1/0x9f0
[  151.041168]        amdgpu_mn_invalidate_hsa+0x30/0x60 [amdgpu]
[  151.047019]        __mmu_notifier_invalidate_range_start+0xa4/0x240
[  151.053277]        copy_page_range+0xd70/0xd80
[  151.057722]        dup_mm+0x3ca/0x550
[  151.061388]        copy_process+0x1bdc/0x1c70
[  151.065748]        _do_fork+0x76/0x6c0
[  151.069499]        __x64_sys_clone+0x8c/0xb0
[  151.073765]        do_syscall_64+0x4a/0x1d0
[  151.077952]        entry_SYSCALL_64_after_hwframe+0x49/0xbe
[  151.083523]
               -> #1 (mmu_notifier_invalidate_range_start){+.+.}:
[  151.090833]        change_protection+0x802/0xab0
[  151.095448]        mprotect_fixup+0x187/0x2d0
[  151.099801]        setup_arg_pages+0x124/0x250
[  151.104251]        load_elf_binary+0x3a4/0x1464
[  151.108781]        search_binary_handler+0x6c/0x210
[  151.113656]        __do_execve_file.isra.40+0x7f7/0xa50
[  151.118875]        do_execve+0x21/0x30
[  151.122632]        call_usermodehelper_exec_async+0x17e/0x190
[  151.128393]        ret_from_fork+0x24/0x30
[  151.132489]
               -> #0 (&mm->mmap_sem#2){++++}:
[  151.138064]        __lock_acquire+0x11a1/0x1490
[  151.142597]        lock_acquire+0x90/0x180
[  151.146694]        __might_fault+0x68/0x90
[  151.150879]        read_sdma_queue_counter+0x5f/0xb0 [amdgpu]
[  151.156693]        update_sdma_queue_past_activity_stats+0x3b/0x90 [amdgpu]
[  151.163725]        destroy_queue_cpsch+0x1ae/0x210 [amdgpu]
[  151.169373]        pqm_destroy_queue+0xf0/0x250 [amdgpu]
[  151.174762]        kfd_ioctl_destroy_queue+0x32/0x70 [amdgpu]
[  151.180577]        kfd_ioctl+0x223/0x400 [amdgpu]
[  151.185284]        ksys_ioctl+0x8f/0xb0
[  151.189118]        __x64_sys_ioctl+0x16/0x20
[  151.193389]        do_syscall_64+0x4a/0x1d0
[  151.197569]        entry_SYSCALL_64_after_hwframe+0x49/0xbe
[  151.203141]
               other info that might help us debug this:

[  151.211140] Chain exists of:
                 &mm->mmap_sem#2 --> &adev->notifier_lock --> &dqm->lock_hidden

[  151.222535]  Possible unsafe locking scenario:

[  151.228447]        CPU0                    CPU1
[  151.232971]        ----                    ----
[  151.237502]   lock(&dqm->lock_hidden);
[  151.241254]                                lock(&adev->notifier_lock);
[  151.247774]                                lock(&dqm->lock_hidden);
[  151.254038]   lock(&mm->mmap_sem#2);

This commit fixes the warning by ensuring get_user() is not called
while reading SDMA stats with dqm_lock held as get_user() could cause a
page fault which leads to the circular locking scenario.

Signed-off-by: Mukul Joshi <mukul.joshi@amd.com>
Reviewed-by: Felix Kuehling <Felix.Kuehling@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2020-07-01 01:59:27 -04:00
Nirmoy Das 204d8998ce drm/amdkfd: label internally used symbols as static
Used sparse(make C=1) to find these loose ends.

v2:
removed unwanted extra line

Signed-off-by: Nirmoy Das <nirmoy.das@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2020-07-01 01:59:23 -04:00
Yong Zhao 3a2f0c813b drm/amdkfd: Support Sienna_Cichlid KFD v4
v4: drop get_tile_config, comment out other callbacks

Signed-off-by: Yong Zhao <Yong.Zhao@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2020-07-01 01:59:11 -04:00
Mukul Joshi 32cb59f313 drm/amdkfd: Track SDMA utilization per process
Track SDMA usage on a per process basis and report it through sysfs.
The value in the sysfs file indicates the amount of time SDMA has
been in-use by this process since the creation of the process.
This value is in microsecond granularity.

Signed-off-by: Mukul Joshi <mukul.joshi@amd.com>
Reviewed-by: Felix Kuehling <Felix.Kuehling@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2020-05-28 14:00:50 -04:00
Yong Zhao d09f85d52a drm/amdkfd: Use a systematic method to calculate queue mask bit
The queue mask used for set_resources always assumes the queue number
per pipe is 8, so KFD needs to align with that by using function
amdgpu_queue_mask_bit_to_set_resource_bit().

Signed-off-by: Yong Zhao <Yong.Zhao@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2020-05-01 15:19:08 -04:00
Joseph Greathouse b8020b0304 drm/amdkfd: Enable over-subscription with >1 GWS queue
The current GWS usage model will only allows a single GWS-enabled
process to be active on the GPU at once. This ensures that a
barrier-using kernel gets a known amount of GPU hardware, to
prevent deadlock due to inability to go beyond the GWS barrier.

The HWS watches how many GWS entries are assigned to each process,
and goes into over-subscription mode when two processes need more
than the 64 that are available. The current KFD method for working
with this is to allocate all 64 GWS entries to each GWS-capable
process.

When more than one GWS-enabled process is in the runlist, we must
make sure the runlist is in over-subscription mode, so that the
HWS gets a chained RUN_LIST packet and continues scheduling
kernels.

Signed-off-by: Joseph Greathouse <Joseph.Greathouse@amd.com>
Reviewed-by: Felix Kuehling <Felix.Kuehling@amd.com>
Signed-off-by: Felix Kuehling <Felix.Kuehling@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2020-04-28 16:20:30 -04:00
Eric Huang f2cc50cefd drm/amdkfd: change SDMA MQD memory type
SDMA MQD memory type is NC that causes MQD data overwritten
accidentally by an old stable cache line. Changing it to UC
default for GART will fix the issue.

The mqd_gfx9 parameter is meant for control stacks that are
allocated together with user mode queue MQDs. Setting
mqd_gfx9 to true maps the control stack pages as NC.
Here it was accidentally applied to SDMA MQDs,
which are allocated together with the HIQ MQD. Setting
the mqd_gfx9 to false avoids that.

Signed-off-by: Eric Huang <jinhuieric.huang@amd.com>
Acked-by: Yong Zhao <Yong.Zhao@amd.com>
Reviewed-by: Felix Kuehling <Felix.Kuehling@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2020-02-28 16:59:20 -05:00
Yong Zhao c7637c95ab drm/amdkfd: Delete unnecessary unmap queue package submissions
The previous way of using SDMA queue count to infer whether we should unmap
SDMA engines has bugs. The reason it did not cause issues is because MEC
firmware unmaps all queues (CP + SDMA) when a unmap package for compute
engine is received. Becasue of that, only one unmap queue package
is needed, instead of one unmap queue package for CP and each SDMA engine,
which results in much simpler driver code.

Signed-off-by: Yong Zhao <Yong.Zhao@amd.com>
Acked-by: Alex Deucher <alexander.deucher@amd.com>
Reviewed-by: Felix Kuehling <Felix.Kuehling@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2020-02-26 14:20:33 -05:00
Yong Zhao 1e21647402 drm/amdkfd: Delete excessive printings
Those printings are duplicated or useless.

Signed-off-by: Yong Zhao <Yong.Zhao@amd.com>
Acked-by: Alex Deucher <alexander.deucher@amd.com>
Reviewed-by: Felix Kuehling <Felix.Kuehling@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2020-02-26 14:20:26 -05:00
Yong Zhao b42902f4af drm/amdkfd: Count active CP queues directly
The previous code of calculating active CP queues is problematic if
some SDMA queues are inactive. Fix that by counting CP queues directly.

Signed-off-by: Yong Zhao <Yong.Zhao@amd.com>
Acked-by: Alex Deucher <alexander.deucher@amd.com>
Reviewed-by: Felix Kuehling <Felix.Kuehling@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2020-02-26 14:20:13 -05:00
Yong Zhao e694530418 drm/amdkfd: Avoid ambiguity by indicating it's cp queue
The queues represented in queue_bitmap are only CP queues.

Signed-off-by: Yong Zhao <Yong.Zhao@amd.com>
Acked-by: Alex Deucher <alexander.deucher@amd.com>
Reviewed-by: Felix Kuehling <Felix.Kuehling@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2020-02-26 14:20:05 -05:00
Yong Zhao 81b820b304 drm/amdkfd: Rename queue_count to active_queue_count
The name is easier to understand the code.

Signed-off-by: Yong Zhao <Yong.Zhao@amd.com>
Acked-by: Alex Deucher <alexander.deucher@amd.com>
Reviewed-by: Felix Kuehling <Felix.Kuehling@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2020-02-26 14:19:38 -05:00
Yong Zhao f38abc15d1 drm/amdkfd: Fix a bug in SDMA RLC queue counting under HWS mode
The sdma_queue_count increment should be done before
execute_queues_cpsch(), which calls pm_calc_rlib_size() where
sdma_queue_count is used to calculate whether over_subscription is
triggered.

With the previous code, when a SDMA queue is created,
compute_queue_count in pm_calc_rlib_size() is one more than the
actual compute queue number, because the queue_count has been
incremented while sdma_queue_count has not. This patch fixes that.

Signed-off-by: Yong Zhao <Yong.Zhao@amd.com>
Reviewed-by: Felix Kuehling <Felix.Kuehling@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2020-02-04 10:32:41 -05:00
Yong Zhao 5205503929 drm/amdkfd: Add a message when SW scheduler is used
SW scheduler is previously called non HW scheduler, or non HWS. This
message is useful when triaging issues from dmesg.

Signed-off-by: Yong Zhao <Yong.Zhao@amd.com>
Acked-by: Huang Rui <ray.huang@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2020-01-16 13:38:07 -05:00
Felix Kuehling c2a77fde10 drm/amdkfd: Avoid hanging hardware in stop_cpsch
Don't use the HWS if it's known to be hanging. In a reset also
don't try to destroy the HIQ because that may hang on SRIOV if the
KIQ is unresponsive.

Signed-off-by: Felix Kuehling <Felix.Kuehling@amd.com>
Tested-by: Emily Deng <Emily.Deng@amd.com>
Reviewed-by: shaoyunl  <shaoyun.liu@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2020-01-07 11:55:04 -05:00
Felix Kuehling 09c34e8d7a drm/amdkfd: Improve HWS hang detection and handling
Move HWS hang detection into unmap_queues_cpsch to catch hangs in all
cases. If this happens during a reset, don't schedule another reset
because the reset already in progress is expected to take care of it.

Signed-off-by: Felix Kuehling <Felix.Kuehling@amd.com>
Tested-by: Emily Deng <Emily.Deng@amd.com>
Reviewed-by: shaoyunl  <shaoyun.liu@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2020-01-07 11:54:56 -05:00
Felix Kuehling 63e088acfc drm/amdkfd: Remove unused variable
dqm->pipeline_mem wasn't used anywhere.

Signed-off-by: Felix Kuehling <Felix.Kuehling@amd.com>
Reviewed-by: shaoyunl  <shaoyun.liu@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2020-01-07 11:54:50 -05:00
Yong Zhao d7c0b0477b drm/amdkfd: Delete KFD_MQD_TYPE_COMPUTE
It is the same as KFD_MQD_TYPE_CP, so delete it. As a result, we will
have one less mqd mananger per device.

Signed-off-by: Yong Zhao <Yong.Zhao@amd.com>
Reviewed-by: Felix Kuehling <Felix.Kuehling@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2019-11-22 14:27:11 -05:00
Yong Zhao 339903fa98 drm/amdkfd: Use better name to indicate the offset is in dwords
The doorbell offset could mean the byte offset or the dword offset,
and the 0 offset place is also different, sometimes the start of PCI
doorbell bar or the start of process doorbell pages. Use better name
to avoid confusion.

Signed-off-by: Yong Zhao <Yong.Zhao@amd.com>
Reviewed-by: Felix Kuehling <Felix.Kuehling@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2019-11-13 15:29:45 -05:00
Philip Yang 2c99a547bc drm/amdkfd: don't use dqm lock during device reset/suspend/resume
If device reset/suspend/resume failed for some reason, dqm lock is
hold forever and this causes deadlock. Below is a kernel backtrace when
application open kfd after suspend/resume failed.

Instead of holding dqm lock in pre_reset and releasing dqm lock in
post_reset, add dqm->sched_running flag which is modified in
dqm->ops.start and dqm->ops.stop. The flag doesn't need lock protection
because write/read are all inside dqm lock.

For HWS case, map_queues_cpsch and unmap_queues_cpsch checks
sched_running flag before sending the updated runlist.

v2: For no-HWS case, when device is stopped, don't call
load/destroy_mqd for eviction, restore and create queue, and avoid
debugfs dump hdqs.

Backtrace of dqm lock deadlock:

[Thu Oct 17 16:43:37 2019] INFO: task rocminfo:3024 blocked for more
than 120 seconds.
[Thu Oct 17 16:43:37 2019]       Not tainted
5.0.0-rc1-kfd-compute-rocm-dkms-no-npi-1131 #1
[Thu Oct 17 16:43:37 2019] "echo 0 >
/proc/sys/kernel/hung_task_timeout_secs" disables this message.
[Thu Oct 17 16:43:37 2019] rocminfo        D    0  3024   2947
0x80000000
[Thu Oct 17 16:43:37 2019] Call Trace:
[Thu Oct 17 16:43:37 2019]  ? __schedule+0x3d9/0x8a0
[Thu Oct 17 16:43:37 2019]  schedule+0x32/0x70
[Thu Oct 17 16:43:37 2019]  schedule_preempt_disabled+0xa/0x10
[Thu Oct 17 16:43:37 2019]  __mutex_lock.isra.9+0x1e3/0x4e0
[Thu Oct 17 16:43:37 2019]  ? __call_srcu+0x264/0x3b0
[Thu Oct 17 16:43:37 2019]  ? process_termination_cpsch+0x24/0x2f0
[amdgpu]
[Thu Oct 17 16:43:37 2019]  process_termination_cpsch+0x24/0x2f0
[amdgpu]
[Thu Oct 17 16:43:37 2019]
kfd_process_dequeue_from_all_devices+0x42/0x60 [amdgpu]
[Thu Oct 17 16:43:37 2019]  kfd_process_notifier_release+0x1be/0x220
[amdgpu]
[Thu Oct 17 16:43:37 2019]  __mmu_notifier_release+0x3e/0xc0
[Thu Oct 17 16:43:37 2019]  exit_mmap+0x160/0x1a0
[Thu Oct 17 16:43:37 2019]  ? __handle_mm_fault+0xba3/0x1200
[Thu Oct 17 16:43:37 2019]  ? exit_robust_list+0x5a/0x110
[Thu Oct 17 16:43:37 2019]  mmput+0x4a/0x120
[Thu Oct 17 16:43:37 2019]  do_exit+0x284/0xb20
[Thu Oct 17 16:43:37 2019]  ? handle_mm_fault+0xfa/0x200
[Thu Oct 17 16:43:37 2019]  do_group_exit+0x3a/0xa0
[Thu Oct 17 16:43:37 2019]  __x64_sys_exit_group+0x14/0x20
[Thu Oct 17 16:43:37 2019]  do_syscall_64+0x4f/0x100
[Thu Oct 17 16:43:37 2019]  entry_SYSCALL_64_after_hwframe+0x44/0xa9

Suggested-by: Felix Kuehling <Felix.Kuehling@amd.com>
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>
2019-10-25 16:50:10 -04:00
Oak Zeng c4bb16e0f8 drm/amdkfd: Print more sdma engine hqds in debug fs
Previously only PCIe-optimized SDMA engine hqds were
exposed in debug fs. Print all SDMA engine hqds.

Reported-by: Jonathan Kim <Jonathan.Kim@amd.com>
Signed-off-by: Jonathan Kim <Jonathan.Kim@amd.com>
Signed-off-by: Oak Zeng <Oak.Zeng@amd.com>
Reviewed-by: Felix Kuehling <Felix.Kuehling@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2019-10-07 15:10:01 -05:00
Oak Zeng 40a9592a26 drm/amdkfd: Fix MQD size calculation
On device initialization, a chunk of GTT memory is pre-allocated for
HIQ and all SDMA queues mqd. The size of this allocation was wrong.
The correct sdma engine number should be PCIe-optimized SDMA engine
number plus xgmi SDMA engine number.

Reported-by: Jonathan Kim <Jonathan.Kim@amd.com>
Signed-off-by: Jonathan Kim <Jonathan.Kim@amd.com>
Signed-off-by: Oak Zeng <Oak.Zeng@amd.com>
Reviewed-by: Felix Kuehling <Felix.Kuehling@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2019-10-07 15:09:53 -05:00
Yong Zhao d9d4623c87 drm/amdkfd: Record vmid pasid mapping in the driver for non HWS mode
This makes possible the vmid pasid mapping query through software.

Signed-off-by: Yong Zhao <Yong.Zhao@amd.com>
Reviewed-by: Felix Kuehling <Felix.Kuehling@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2019-10-03 09:11:03 -05:00
Yong Zhao 6027b1bf60 drm/amdkfd: Use hex print format for pasid
Since KFD pasid starts from 0x8000 (32768 in decimal), it is better
perceived as a hex number. Meanwhile, change the pasid type from
unsigned int to uint16_t to be consistent throughout the code.

Signed-off-by: Yong Zhao <Yong.Zhao@amd.com>
Reviewed-by: Felix Kuehling <Felix.Kuehling@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2019-10-03 09:11:03 -05:00
shaoyunl 0e94b5640b drm/amdkfd: use navi12 specific family id for navi12 code path
Keep the same use of CHIP_IDs for navi12 in kfd

Signed-off-by: shaoyunl <shaoyun.liu@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2019-10-03 09:11:03 -05:00
Yong Zhao c637b36aea drm/amdkfd: Fix NULL pointer dereference for set_scratch_backing_va()
Currently this function pointer is missing for GFX10. Considering it is
a void function since GFX9, fix it by checking the function pointer
before dereferencing it.

Signed-off-by: Yong Zhao <Yong.Zhao@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2019-10-03 09:11:01 -05:00
Yong Zhao 424b5442a2 drm/amdkfd: Remove unnecessary pm_init() for non HWS mode
The packet manager is not needed for non HWS mode except Hawaii, so only
initialize it for Hawaii under non HWS mode. This will simplify debugging
under non HWS mode for all new asics, because it eliminates one variable
out of the equation in non HWS mode

Signed-off-by: Yong Zhao <Yong.Zhao@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2019-10-03 09:11:01 -05:00
Huang Rui 5a959a8988 drm/amdkfd: enable kfd device queue manager v9 for renoir
Renoir is GFX9, so enable v9 devcie queue manager.

Signed-off-by: Huang Rui <ray.huang@amd.com>
Reviewed-by: Felix Kuehling <Felix.Kuehling@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2019-09-16 09:55:02 -05:00
Yong Zhao 8099ae40d8 drm/amdkfd: Support Navi14 in KFD
Initial support of Navi14 in KFD. The device IDs will be added later.

Signed-off-by: Yong Zhao <Yong.Zhao@amd.com>
Reviewed-by: Felix Kuehling <Felix.Kuehling@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2019-09-16 09:54:40 -05:00
YueHaibing 7fd5a6fb9a drm/amdkfd: Make deallocate_hiq_sdma_mqd static
Fix sparse warning:

drivers/gpu/drm/amd/amdgpu/../amdkfd/kfd_device_queue_manager.c:1846:6:
 warning: symbol 'deallocate_hiq_sdma_mqd' was not declared. Should it be static?

Reported-by: Hulk Robot <hulkci@huawei.com>
Signed-off-by: YueHaibing <yuehaibing@huawei.com>
Signed-off-by: Felix Kuehling <Felix.Kuehling@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2019-08-22 17:25:10 -05:00
Oak Zeng 35cdc81bfa drm/amdkfd: Fix sdma_bitmap overflow issue
In the original formula, when sdma queue number is 64,
the left shift overflows. Use an equivalence that won't
overflow.

Signed-off-by: Oak Zeng <Oak.Zeng@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2019-07-18 14:18:04 -05:00
Yong Zhao 49adcf8a6f amd/amdkfd: Add ASIC ARCTURUS to kfd
Add initial support for ARCTURUS to kfd.

Signed-off-by: Yong Zhao <Yong.Zhao@amd.com>
Signed-off-by: Oak Zeng <Oak.Zeng@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2019-07-18 14:18:03 -05:00
Eric Huang 70df8273ca drm/amdkfd: fix cp hang in eviction
The cp hang occurs in OCL conformance test only on supermicro
platform which has 40 cores and the test generates 40 threads.
The root cause is race condition in non-protected flags.

The fix is to add flags of is_evicted and is_active(init_mqd())
into protected area.

Signed-off-by: Eric Huang <JinhuiEric.Huang@amd.com>
Reviewed-by: Felix Kuehling <Felix.Kuehling@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2019-07-11 14:37:24 -05:00
Oak Zeng d9848e149d drm/amdkfd: Set gws_mask to 64 bit 1s
Previous kfd doesn't use gws so this mask was set to 0.
Set it to 64 bit 1s because now kfd can use all 64 gws
resources.

Signed-off-by: Oak Zeng <Oak.Zeng@amd.com>
Reviewed-by: Felix Kuehling <Felix.Kuehling@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2019-06-22 09:34:14 -05:00
Philip Cox 14328aa58c drm/amdkfd: Add navi10 support to amdkfd. (v3)
KFD (kernel fusion driver) is the kernel driver
for the compute backend for usermode compute
stack.

v2: squash in updates (Alex)
v3: squash in rebase fixes (Alex)

Signed-off-by: Oak Zeng <Oak.Zeng@amd.com>
Signed-off-by: Philip Cox <Philip.Cox@amd.com>
Acked-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Hawking Zhang <Hawking.Zhang@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2019-06-21 18:59:24 -05:00
Oak Zeng 38bb4226ff drm/amdkfd: Fix sdma queue allocate race condition
SDMA queue allocation requires the dqm lock as it modify
the global dqm members. Enclose it in the dqm_lock.

Signed-off-by: Oak Zeng <Oak.Zeng@amd.com>
Reviewed-by: Philip Yang <philip.yang@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2019-06-17 11:01:41 -05:00
Oak Zeng 6a6ef5ee25 drm/amdkfd: Fix a circular lock dependency
The idea to break the circular lock dependency is to temporarily drop
dqm lock before calling allocate_mqd. See callstack #1 below.

[   59.510149] [drm] Initialized amdgpu 3.30.0 20150101 for 0000:04:00.0 on minor 0

[  513.604034] ======================================================
[  513.604205] WARNING: possible circular locking dependency detected
[  513.604375] 4.18.0-kfd-root #2 Tainted: G        W
[  513.604530] ------------------------------------------------------
[  513.604699] kswapd0/611 is trying to acquire lock:
[  513.604840] 00000000d254022e (&dqm->lock_hidden){+.+.}, at: evict_process_queues_nocpsch+0x26/0x140 [amdgpu]
[  513.605150]
               but task is already holding lock:
[  513.605307] 00000000961547fc (&anon_vma->rwsem){++++}, at: page_lock_anon_vma_read+0xe4/0x250
[  513.605540]
               which lock already depends on the new lock.

[  513.605747]
               the existing dependency chain (in reverse order) is:
[  513.605944]
               -> #4 (&anon_vma->rwsem){++++}:
[  513.606106]        __vma_adjust+0x147/0x7f0
[  513.606231]        __split_vma+0x179/0x190
[  513.606353]        mprotect_fixup+0x217/0x260
[  513.606553]        do_mprotect_pkey+0x211/0x380
[  513.606752]        __x64_sys_mprotect+0x1b/0x20
[  513.606954]        do_syscall_64+0x50/0x1a0
[  513.607149]        entry_SYSCALL_64_after_hwframe+0x49/0xbe
[  513.607380]
               -> #3 (&mapping->i_mmap_rwsem){++++}:
[  513.607678]        rmap_walk_file+0x1f0/0x280
[  513.607887]        page_referenced+0xdd/0x180
[  513.608081]        shrink_page_list+0x853/0xcb0
[  513.608279]        shrink_inactive_list+0x33b/0x700
[  513.608483]        shrink_node_memcg+0x37a/0x7f0
[  513.608682]        shrink_node+0xd8/0x490
[  513.608869]        balance_pgdat+0x18b/0x3b0
[  513.609062]        kswapd+0x203/0x5c0
[  513.609241]        kthread+0x100/0x140
[  513.609420]        ret_from_fork+0x24/0x30
[  513.609607]
               -> #2 (fs_reclaim){+.+.}:
[  513.609883]        kmem_cache_alloc_trace+0x34/0x2e0
[  513.610093]        reservation_object_reserve_shared+0x139/0x300
[  513.610326]        ttm_bo_init_reserved+0x291/0x480 [ttm]
[  513.610567]        amdgpu_bo_do_create+0x1d2/0x650 [amdgpu]
[  513.610811]        amdgpu_bo_create+0x40/0x1f0 [amdgpu]
[  513.611041]        amdgpu_bo_create_reserved+0x249/0x2d0 [amdgpu]
[  513.611290]        amdgpu_bo_create_kernel+0x12/0x70 [amdgpu]
[  513.611584]        amdgpu_ttm_init+0x2cb/0x560 [amdgpu]
[  513.611823]        gmc_v9_0_sw_init+0x400/0x750 [amdgpu]
[  513.612491]        amdgpu_device_init+0x14eb/0x1990 [amdgpu]
[  513.612730]        amdgpu_driver_load_kms+0x78/0x290 [amdgpu]
[  513.612958]        drm_dev_register+0x111/0x1a0
[  513.613171]        amdgpu_pci_probe+0x11c/0x1e0 [amdgpu]
[  513.613389]        local_pci_probe+0x3f/0x90
[  513.613581]        pci_device_probe+0x102/0x1c0
[  513.613779]        driver_probe_device+0x2a7/0x480
[  513.613984]        __driver_attach+0x10a/0x110
[  513.614179]        bus_for_each_dev+0x67/0xc0
[  513.614372]        bus_add_driver+0x1eb/0x260
[  513.614565]        driver_register+0x5b/0xe0
[  513.614756]        do_one_initcall+0xac/0x357
[  513.614952]        do_init_module+0x5b/0x213
[  513.615145]        load_module+0x2542/0x2d30
[  513.615337]        __do_sys_finit_module+0xd2/0x100
[  513.615541]        do_syscall_64+0x50/0x1a0
[  513.615731]        entry_SYSCALL_64_after_hwframe+0x49/0xbe
[  513.615963]
               -> #1 (reservation_ww_class_mutex){+.+.}:
[  513.616293]        amdgpu_amdkfd_alloc_gtt_mem+0xcf/0x2c0 [amdgpu]
[  513.616554]        init_mqd+0x223/0x260 [amdgpu]
[  513.616779]        create_queue_nocpsch+0x4d9/0x600 [amdgpu]
[  513.617031]        pqm_create_queue+0x37c/0x520 [amdgpu]
[  513.617270]        kfd_ioctl_create_queue+0x2f9/0x650 [amdgpu]
[  513.617522]        kfd_ioctl+0x202/0x350 [amdgpu]
[  513.617724]        do_vfs_ioctl+0x9f/0x6c0
[  513.617914]        ksys_ioctl+0x66/0x70
[  513.618095]        __x64_sys_ioctl+0x16/0x20
[  513.618286]        do_syscall_64+0x50/0x1a0
[  513.618476]        entry_SYSCALL_64_after_hwframe+0x49/0xbe
[  513.618695]
               -> #0 (&dqm->lock_hidden){+.+.}:
[  513.618984]        __mutex_lock+0x98/0x970
[  513.619197]        evict_process_queues_nocpsch+0x26/0x140 [amdgpu]
[  513.619459]        kfd_process_evict_queues+0x3b/0xb0 [amdgpu]
[  513.619710]        kgd2kfd_quiesce_mm+0x1c/0x40 [amdgpu]
[  513.620103]        amdgpu_amdkfd_evict_userptr+0x38/0x70 [amdgpu]
[  513.620363]        amdgpu_mn_invalidate_range_start_hsa+0xa6/0xc0 [amdgpu]
[  513.620614]        __mmu_notifier_invalidate_range_start+0x70/0xb0
[  513.620851]        try_to_unmap_one+0x7fc/0x8f0
[  513.621049]        rmap_walk_anon+0x121/0x290
[  513.621242]        try_to_unmap+0x93/0xf0
[  513.621428]        shrink_page_list+0x606/0xcb0
[  513.621625]        shrink_inactive_list+0x33b/0x700
[  513.621835]        shrink_node_memcg+0x37a/0x7f0
[  513.622034]        shrink_node+0xd8/0x490
[  513.622219]        balance_pgdat+0x18b/0x3b0
[  513.622410]        kswapd+0x203/0x5c0
[  513.622589]        kthread+0x100/0x140
[  513.622769]        ret_from_fork+0x24/0x30
[  513.622957]
               other info that might help us debug this:

[  513.623354] Chain exists of:
                 &dqm->lock_hidden --> &mapping->i_mmap_rwsem --> &anon_vma->rwsem

[  513.623900]  Possible unsafe locking scenario:

[  513.624189]        CPU0                    CPU1
[  513.624397]        ----                    ----
[  513.624594]   lock(&anon_vma->rwsem);
[  513.624771]                                lock(&mapping->i_mmap_rwsem);
[  513.625020]                                lock(&anon_vma->rwsem);
[  513.625253]   lock(&dqm->lock_hidden);
[  513.625433]
                *** DEADLOCK ***

[  513.625783] 3 locks held by kswapd0/611:
[  513.625967]  #0: 00000000f14edf84 (fs_reclaim){+.+.}, at: __fs_reclaim_acquire+0x5/0x30
[  513.626309]  #1: 00000000961547fc (&anon_vma->rwsem){++++}, at: page_lock_anon_vma_read+0xe4/0x250
[  513.626671]  #2: 0000000067b5cd12 (srcu){....}, at: __mmu_notifier_invalidate_range_start+0x5/0xb0
[  513.627037]
               stack backtrace:
[  513.627292] CPU: 0 PID: 611 Comm: kswapd0 Tainted: G        W         4.18.0-kfd-root #2
[  513.627632] Hardware name: innotek GmbH VirtualBox/VirtualBox, BIOS VirtualBox 12/01/2006
[  513.627990] Call Trace:
[  513.628143]  dump_stack+0x7c/0xbb
[  513.628315]  print_circular_bug.isra.37+0x21b/0x228
[  513.628581]  __lock_acquire+0xf7d/0x1470
[  513.628782]  ? unwind_next_frame+0x6c/0x4f0
[  513.628974]  ? lock_acquire+0xec/0x1e0
[  513.629154]  lock_acquire+0xec/0x1e0
[  513.629357]  ? evict_process_queues_nocpsch+0x26/0x140 [amdgpu]
[  513.629587]  __mutex_lock+0x98/0x970
[  513.629790]  ? evict_process_queues_nocpsch+0x26/0x140 [amdgpu]
[  513.630047]  ? evict_process_queues_nocpsch+0x26/0x140 [amdgpu]
[  513.630309]  ? evict_process_queues_nocpsch+0x26/0x140 [amdgpu]
[  513.630562]  evict_process_queues_nocpsch+0x26/0x140 [amdgpu]
[  513.630816]  kfd_process_evict_queues+0x3b/0xb0 [amdgpu]
[  513.631057]  kgd2kfd_quiesce_mm+0x1c/0x40 [amdgpu]
[  513.631288]  amdgpu_amdkfd_evict_userptr+0x38/0x70 [amdgpu]
[  513.631536]  amdgpu_mn_invalidate_range_start_hsa+0xa6/0xc0 [amdgpu]
[  513.632076]  __mmu_notifier_invalidate_range_start+0x70/0xb0
[  513.632299]  try_to_unmap_one+0x7fc/0x8f0
[  513.632487]  ? page_lock_anon_vma_read+0x68/0x250
[  513.632690]  rmap_walk_anon+0x121/0x290
[  513.632875]  try_to_unmap+0x93/0xf0
[  513.633050]  ? page_remove_rmap+0x330/0x330
[  513.633239]  ? rcu_read_unlock+0x60/0x60
[  513.633422]  ? page_get_anon_vma+0x160/0x160
[  513.633613]  shrink_page_list+0x606/0xcb0
[  513.633800]  shrink_inactive_list+0x33b/0x700
[  513.633997]  shrink_node_memcg+0x37a/0x7f0
[  513.634186]  ? shrink_node+0xd8/0x490
[  513.634363]  shrink_node+0xd8/0x490
[  513.634537]  balance_pgdat+0x18b/0x3b0
[  513.634718]  kswapd+0x203/0x5c0
[  513.634887]  ? wait_woken+0xb0/0xb0
[  513.635062]  kthread+0x100/0x140
[  513.635231]  ? balance_pgdat+0x3b0/0x3b0
[  513.635414]  ? kthread_delayed_work_timer_fn+0x80/0x80
[  513.635626]  ret_from_fork+0x24/0x30
[  513.636042] Evicting PASID 32768 queues
[  513.936236] Restoring PASID 32768 queues
[  524.708912] Evicting PASID 32768 queues
[  524.999875] Restoring PASID 32768 queues

Signed-off-by: Oak Zeng <Oak.Zeng@amd.com>
Reviewed-by: Philip Yang <philip.yang@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2019-06-17 11:01:41 -05:00
Oak Zeng d091bc0a70 Revert "drm/amdkfd: Fix a circular lock dependency"
This reverts commit 06b89b38f3.
This fix is not proper. allocate_mqd can't be moved before
allocate_sdma_queue as it depends on q->properties->sdma_id
set in later.

Signed-off-by: Oak Zeng <Oak.Zeng@amd.com>
Reviewed-by: Philip Yang <philip.yang@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2019-06-17 11:01:41 -05:00
Oak Zeng 70d488fb3f Revert "drm/amdkfd: Fix sdma queue allocate race condition"
This reverts commit f77dac6cd6.
This fix is not proper. allocate_mqd can't be moved before
allocate_sdma_queue as it depends on q->properties->sdma_id
set in later.

Signed-off-by: Oak Zeng <Oak.Zeng@amd.com>
Reviewed-by: Philip Yang <philip.yang@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2019-06-17 11:01:41 -05:00
Oak Zeng f77dac6cd6 drm/amdkfd: Fix sdma queue allocate race condition
SDMA queue allocation requires the dqm lock at it modify
the global dqm members. Move up the dqm_lock so sdma
queue allocation is enclosed in the critical section. Move
mqd allocation out of critical section to avoid circular
lock dependency.

Signed-off-by: Oak Zeng <Oak.Zeng@amd.com>
Reviewed-by: Felix Kuehling <Felix.Kuehling@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2019-06-11 12:57:18 -05:00
Oak Zeng 06b89b38f3 drm/amdkfd: Fix a circular lock dependency
The idea to break the circular lock dependency is to move allocate_mqd
out of dqm lock protection. See callstack #1 below.

[   59.510149] [drm] Initialized amdgpu 3.30.0 20150101 for 0000:04:00.0 on minor 0

[  513.604034] ======================================================
[  513.604205] WARNING: possible circular locking dependency detected
[  513.604375] 4.18.0-kfd-root #2 Tainted: G        W
[  513.604530] ------------------------------------------------------
[  513.604699] kswapd0/611 is trying to acquire lock:
[  513.604840] 00000000d254022e (&dqm->lock_hidden){+.+.}, at: evict_process_queues_nocpsch+0x26/0x140 [amdgpu]
[  513.605150]
               but task is already holding lock:
[  513.605307] 00000000961547fc (&anon_vma->rwsem){++++}, at: page_lock_anon_vma_read+0xe4/0x250
[  513.605540]
               which lock already depends on the new lock.

[  513.605747]
               the existing dependency chain (in reverse order) is:
[  513.605944]
               -> #4 (&anon_vma->rwsem){++++}:
[  513.606106]        __vma_adjust+0x147/0x7f0
[  513.606231]        __split_vma+0x179/0x190
[  513.606353]        mprotect_fixup+0x217/0x260
[  513.606553]        do_mprotect_pkey+0x211/0x380
[  513.606752]        __x64_sys_mprotect+0x1b/0x20
[  513.606954]        do_syscall_64+0x50/0x1a0
[  513.607149]        entry_SYSCALL_64_after_hwframe+0x49/0xbe
[  513.607380]
               -> #3 (&mapping->i_mmap_rwsem){++++}:
[  513.607678]        rmap_walk_file+0x1f0/0x280
[  513.607887]        page_referenced+0xdd/0x180
[  513.608081]        shrink_page_list+0x853/0xcb0
[  513.608279]        shrink_inactive_list+0x33b/0x700
[  513.608483]        shrink_node_memcg+0x37a/0x7f0
[  513.608682]        shrink_node+0xd8/0x490
[  513.608869]        balance_pgdat+0x18b/0x3b0
[  513.609062]        kswapd+0x203/0x5c0
[  513.609241]        kthread+0x100/0x140
[  513.609420]        ret_from_fork+0x24/0x30
[  513.609607]
               -> #2 (fs_reclaim){+.+.}:
[  513.609883]        kmem_cache_alloc_trace+0x34/0x2e0
[  513.610093]        reservation_object_reserve_shared+0x139/0x300
[  513.610326]        ttm_bo_init_reserved+0x291/0x480 [ttm]
[  513.610567]        amdgpu_bo_do_create+0x1d2/0x650 [amdgpu]
[  513.610811]        amdgpu_bo_create+0x40/0x1f0 [amdgpu]
[  513.611041]        amdgpu_bo_create_reserved+0x249/0x2d0 [amdgpu]
[  513.611290]        amdgpu_bo_create_kernel+0x12/0x70 [amdgpu]
[  513.611584]        amdgpu_ttm_init+0x2cb/0x560 [amdgpu]
[  513.611823]        gmc_v9_0_sw_init+0x400/0x750 [amdgpu]
[  513.612491]        amdgpu_device_init+0x14eb/0x1990 [amdgpu]
[  513.612730]        amdgpu_driver_load_kms+0x78/0x290 [amdgpu]
[  513.612958]        drm_dev_register+0x111/0x1a0
[  513.613171]        amdgpu_pci_probe+0x11c/0x1e0 [amdgpu]
[  513.613389]        local_pci_probe+0x3f/0x90
[  513.613581]        pci_device_probe+0x102/0x1c0
[  513.613779]        driver_probe_device+0x2a7/0x480
[  513.613984]        __driver_attach+0x10a/0x110
[  513.614179]        bus_for_each_dev+0x67/0xc0
[  513.614372]        bus_add_driver+0x1eb/0x260
[  513.614565]        driver_register+0x5b/0xe0
[  513.614756]        do_one_initcall+0xac/0x357
[  513.614952]        do_init_module+0x5b/0x213
[  513.615145]        load_module+0x2542/0x2d30
[  513.615337]        __do_sys_finit_module+0xd2/0x100
[  513.615541]        do_syscall_64+0x50/0x1a0
[  513.615731]        entry_SYSCALL_64_after_hwframe+0x49/0xbe
[  513.615963]
               -> #1 (reservation_ww_class_mutex){+.+.}:
[  513.616293]        amdgpu_amdkfd_alloc_gtt_mem+0xcf/0x2c0 [amdgpu]
[  513.616554]        init_mqd+0x223/0x260 [amdgpu]
[  513.616779]        create_queue_nocpsch+0x4d9/0x600 [amdgpu]
[  513.617031]        pqm_create_queue+0x37c/0x520 [amdgpu]
[  513.617270]        kfd_ioctl_create_queue+0x2f9/0x650 [amdgpu]
[  513.617522]        kfd_ioctl+0x202/0x350 [amdgpu]
[  513.617724]        do_vfs_ioctl+0x9f/0x6c0
[  513.617914]        ksys_ioctl+0x66/0x70
[  513.618095]        __x64_sys_ioctl+0x16/0x20
[  513.618286]        do_syscall_64+0x50/0x1a0
[  513.618476]        entry_SYSCALL_64_after_hwframe+0x49/0xbe
[  513.618695]
               -> #0 (&dqm->lock_hidden){+.+.}:
[  513.618984]        __mutex_lock+0x98/0x970
[  513.619197]        evict_process_queues_nocpsch+0x26/0x140 [amdgpu]
[  513.619459]        kfd_process_evict_queues+0x3b/0xb0 [amdgpu]
[  513.619710]        kgd2kfd_quiesce_mm+0x1c/0x40 [amdgpu]
[  513.620103]        amdgpu_amdkfd_evict_userptr+0x38/0x70 [amdgpu]
[  513.620363]        amdgpu_mn_invalidate_range_start_hsa+0xa6/0xc0 [amdgpu]
[  513.620614]        __mmu_notifier_invalidate_range_start+0x70/0xb0
[  513.620851]        try_to_unmap_one+0x7fc/0x8f0
[  513.621049]        rmap_walk_anon+0x121/0x290
[  513.621242]        try_to_unmap+0x93/0xf0
[  513.621428]        shrink_page_list+0x606/0xcb0
[  513.621625]        shrink_inactive_list+0x33b/0x700
[  513.621835]        shrink_node_memcg+0x37a/0x7f0
[  513.622034]        shrink_node+0xd8/0x490
[  513.622219]        balance_pgdat+0x18b/0x3b0
[  513.622410]        kswapd+0x203/0x5c0
[  513.622589]        kthread+0x100/0x140
[  513.622769]        ret_from_fork+0x24/0x30
[  513.622957]
               other info that might help us debug this:

[  513.623354] Chain exists of:
                 &dqm->lock_hidden --> &mapping->i_mmap_rwsem --> &anon_vma->rwsem

[  513.623900]  Possible unsafe locking scenario:

[  513.624189]        CPU0                    CPU1
[  513.624397]        ----                    ----
[  513.624594]   lock(&anon_vma->rwsem);
[  513.624771]                                lock(&mapping->i_mmap_rwsem);
[  513.625020]                                lock(&anon_vma->rwsem);
[  513.625253]   lock(&dqm->lock_hidden);
[  513.625433]
                *** DEADLOCK ***

[  513.625783] 3 locks held by kswapd0/611:
[  513.625967]  #0: 00000000f14edf84 (fs_reclaim){+.+.}, at: __fs_reclaim_acquire+0x5/0x30
[  513.626309]  #1: 00000000961547fc (&anon_vma->rwsem){++++}, at: page_lock_anon_vma_read+0xe4/0x250
[  513.626671]  #2: 0000000067b5cd12 (srcu){....}, at: __mmu_notifier_invalidate_range_start+0x5/0xb0
[  513.627037]
               stack backtrace:
[  513.627292] CPU: 0 PID: 611 Comm: kswapd0 Tainted: G        W         4.18.0-kfd-root #2
[  513.627632] Hardware name: innotek GmbH VirtualBox/VirtualBox, BIOS VirtualBox 12/01/2006
[  513.627990] Call Trace:
[  513.628143]  dump_stack+0x7c/0xbb
[  513.628315]  print_circular_bug.isra.37+0x21b/0x228
[  513.628581]  __lock_acquire+0xf7d/0x1470
[  513.628782]  ? unwind_next_frame+0x6c/0x4f0
[  513.628974]  ? lock_acquire+0xec/0x1e0
[  513.629154]  lock_acquire+0xec/0x1e0
[  513.629357]  ? evict_process_queues_nocpsch+0x26/0x140 [amdgpu]
[  513.629587]  __mutex_lock+0x98/0x970
[  513.629790]  ? evict_process_queues_nocpsch+0x26/0x140 [amdgpu]
[  513.630047]  ? evict_process_queues_nocpsch+0x26/0x140 [amdgpu]
[  513.630309]  ? evict_process_queues_nocpsch+0x26/0x140 [amdgpu]
[  513.630562]  evict_process_queues_nocpsch+0x26/0x140 [amdgpu]
[  513.630816]  kfd_process_evict_queues+0x3b/0xb0 [amdgpu]
[  513.631057]  kgd2kfd_quiesce_mm+0x1c/0x40 [amdgpu]
[  513.631288]  amdgpu_amdkfd_evict_userptr+0x38/0x70 [amdgpu]
[  513.631536]  amdgpu_mn_invalidate_range_start_hsa+0xa6/0xc0 [amdgpu]
[  513.632076]  __mmu_notifier_invalidate_range_start+0x70/0xb0
[  513.632299]  try_to_unmap_one+0x7fc/0x8f0
[  513.632487]  ? page_lock_anon_vma_read+0x68/0x250
[  513.632690]  rmap_walk_anon+0x121/0x290
[  513.632875]  try_to_unmap+0x93/0xf0
[  513.633050]  ? page_remove_rmap+0x330/0x330
[  513.633239]  ? rcu_read_unlock+0x60/0x60
[  513.633422]  ? page_get_anon_vma+0x160/0x160
[  513.633613]  shrink_page_list+0x606/0xcb0
[  513.633800]  shrink_inactive_list+0x33b/0x700
[  513.633997]  shrink_node_memcg+0x37a/0x7f0
[  513.634186]  ? shrink_node+0xd8/0x490
[  513.634363]  shrink_node+0xd8/0x490
[  513.634537]  balance_pgdat+0x18b/0x3b0
[  513.634718]  kswapd+0x203/0x5c0
[  513.634887]  ? wait_woken+0xb0/0xb0
[  513.635062]  kthread+0x100/0x140
[  513.635231]  ? balance_pgdat+0x3b0/0x3b0
[  513.635414]  ? kthread_delayed_work_timer_fn+0x80/0x80
[  513.635626]  ret_from_fork+0x24/0x30
[  513.636042] Evicting PASID 32768 queues
[  513.936236] Restoring PASID 32768 queues
[  524.708912] Evicting PASID 32768 queues
[  524.999875] Restoring PASID 32768 queues

Signed-off-by: Oak Zeng <Oak.Zeng@amd.com>
Reviewed-by: Felix Kuehling <Felix.Kuehling@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2019-06-11 12:57:07 -05:00
Oak Zeng 8636e53c47 drm/amdkfd: Separate mqd allocation and initialization
Introduce a new mqd allocation interface and split the original
init_mqd function into two functions: allocate_mqd and init_mqd.
Also renamed uninit_mqd to free_mqd. This is preparation work to
fix a circular lock dependency.

Signed-off-by: Oak Zeng <Oak.Zeng@amd.com>
Reviewed-by: Felix Kuehling <Felix.Kuehling@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2019-06-11 12:56:59 -05:00
Oak Zeng d39b773734 drm/amdkfd: Refactor create_queue_nocpsch
This is prepare work to fix a circular lock dependency.
No logic change

Signed-off-by: Oak Zeng <Oak.Zeng@amd.com>
Reviewed-by: Felix Kuehling <Felix.Kuehling@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2019-06-11 12:56:53 -05:00
Oak Zeng 2ff528190f drm/amdkfd: Only load sdma mqd when queue is active
Also calls load_mqd with current->mm struct. The mm
struct is used to read back user wptr of the queue.

Signed-off-by: Oak Zeng <Oak.Zeng@amd.com>
Reviewed-by: Felix Kuehling <Felix.Kuehling@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2019-06-11 12:56:46 -05:00
Oak Zeng eec0b4cf92 drm/amdkfd: Only initialize sdma vm for sdma queues
Don't do the same for compute queues

Signed-off-by: Oak Zeng <Oak.Zeng@amd.com>
Reviewed-by: Felix Kuehling <Felix.Kuehling@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2019-06-11 12:56:35 -05:00
Felix Kuehling bb2d2128a5 drm/amdkfd: Simplify eviction state logic
Always mark evicted queues with q->properties.is_evicted = true, even
queues that are inactive for other reason. This simplifies maintaining
the eviction state as it doesn't require updating is_evicted when other
queue activation conditions change.

On the other hand, we now need to check those other queue activation
conditions whenever an evicted queues is restored. To minimize code
duplication, move the queue activation check into a macro so it can be
maintained in one central place.

Signed-off-by: Felix Kuehling <Felix.Kuehling@amd.com>
Reviewed-by: Philip Cox <Philip.Cox@amd.com>
Acked-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2019-06-11 11:57:45 -05:00