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614654abe8
linux_dsm_epyc7002/drivers/gpu/drm/i915
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Chris Wilson 614654abe8 drm/i915: Check current i915_vma.pin_count status first on unbind 
Do an early rejection of a i915_vma_unbind() attempt if the i915_vma is
currently pinned, without waiting to see if the inflight operations may
unpin it. We see this problem with the shrinker trying to unbind the
active vma from inside its bind worker:

<6> [472.618968] Workqueue: events_unbound fence_work [i915]
<4> [472.618970] Call Trace:
<4> [472.618974]  ? __schedule+0x2e5/0x810
<4> [472.618978]  schedule+0x37/0xe0
<4> [472.618982]  schedule_preempt_disabled+0xf/0x20
<4> [472.618984]  __mutex_lock+0x281/0x9c0
<4> [472.618987]  ? mark_held_locks+0x49/0x70
<4> [472.618989]  ? _raw_spin_unlock_irqrestore+0x47/0x60
<4> [472.619038]  ? i915_vma_unbind+0xae/0x110 [i915]
<4> [472.619084]  ? i915_vma_unbind+0xae/0x110 [i915]
<4> [472.619122]  i915_vma_unbind+0xae/0x110 [i915]
<4> [472.619165]  i915_gem_object_unbind+0x1dc/0x400 [i915]
<4> [472.619208]  i915_gem_shrink+0x328/0x660 [i915]
<4> [472.619250]  ? i915_gem_shrink_all+0x38/0x60 [i915]
<4> [472.619282]  i915_gem_shrink_all+0x38/0x60 [i915]
<4> [472.619325]  vm_alloc_page.constprop.25+0x1aa/0x240 [i915]
<4> [472.619330]  ? rcu_read_lock_sched_held+0x4d/0x80
<4> [472.619363]  ? __alloc_pd+0xb/0x30 [i915]
<4> [472.619366]  ? module_assert_mutex_or_preempt+0xf/0x30
<4> [472.619368]  ? __module_address+0x23/0xe0
<4> [472.619371]  ? is_module_address+0x26/0x40
<4> [472.619374]  ? static_obj+0x34/0x50
<4> [472.619376]  ? lockdep_init_map+0x4d/0x1e0
<4> [472.619407]  setup_page_dma+0xd/0x90 [i915]
<4> [472.619437]  alloc_pd+0x29/0x50 [i915]
<4> [472.619470]  __gen8_ppgtt_alloc+0x443/0x6b0 [i915]
<4> [472.619503]  gen8_ppgtt_alloc+0xd7/0x300 [i915]
<4> [472.619535]  ppgtt_bind_vma+0x2a/0xe0 [i915]
<4> [472.619577]  __vma_bind+0x26/0x40 [i915]
<4> [472.619611]  fence_work+0x1c/0x90 [i915]
<4> [472.619617]  process_one_work+0x26a/0x620

Fixes: 2850748ef8 ("drm/i915: Pull i915_vma_pin under the vm->mutex")
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Reviewed-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20200403120150.17091-1-chris@chris-wilson.co.uk
2020-04-03 19:39:57 +01:00
..
display drm/i915: Move the port sync DP_TP_CTL stuff to the encoder hook 2020-04-03 19:49:57 +03:00
gem drm/i915/gem: Utilize rcu iteration of context engines 2020-04-02 21:43:53 +01:00
gt drm/i915: Keep a per-engine request pool 2020-04-03 15:20:03 +01:00
gvt drm/i915: Move GGTT fence registers under gt/ 2020-03-16 20:28:26 +00:00
selftests drm/i915/gem: Drop cached obj->bind_count 2020-04-02 01:17:39 +01:00
.gitignore
i915_active_types.h
i915_active.c drm/i915: Wrap i915_active in a simple kreffed struct 2020-03-30 18:20:34 +01:00
i915_active.h drm/i915: Wrap i915_active in a simple kreffed struct 2020-03-30 18:20:34 +01:00
i915_buddy.c drm/i915/buddy: avoid double list_add 2020-03-06 14:33:08 +00:00
i915_buddy.h
i915_cmd_parser.c
i915_debugfs_params.c
i915_debugfs_params.h
i915_debugfs.c drm/i915/gem: Drop cached obj->bind_count 2020-04-02 01:17:39 +01:00
i915_debugfs.h drm/i915: split out display debugfs to a separate file 2020-02-14 13:26:51 +02:00
i915_drv.c drm/i915/gt: Pull restoration of GGTT fences underneath the GT 2020-03-16 20:28:28 +00:00
i915_drv.h drm/i915: Store cpu_transcoder_mask in device info 2020-04-03 19:49:56 +03:00
i915_fixed.h
i915_gem_evict.c drm/i915: Drop inspection of execbuf flags during evict 2020-03-03 21:52:51 +00:00
i915_gem_gtt.c drm/i915: significantly reduce the use of <drm/i915_drm.h> 2020-02-27 08:35:09 +02:00
i915_gem_gtt.h
i915_gem.c drm/i915/gem: Drop cached obj->bind_count 2020-04-02 01:17:39 +01:00
i915_gem.h
i915_getparam.c
i915_globals.c
i915_globals.h
i915_gpu_error.c drm/i915: Update drm/i915 bug filing URL 2020-02-17 11:16:05 +02:00
i915_gpu_error.h drm/i915: Track hw reported context runtime 2020-02-16 15:16:22 +00:00
i915_ioc32.c drm/i915: add i915_ioc32.h for compat 2020-03-02 13:32:37 +02:00
i915_ioc32.h drm/i915: add i915_ioc32.h for compat 2020-03-02 13:32:37 +02:00
i915_irq.c drm/i915: Drop final few uses of drm_i915_private.engine 2020-03-26 10:50:17 +00:00
i915_irq.h
i915_memcpy.c
i915_memcpy.h
i915_mm.c
i915_params.c
i915_params.h
i915_pci.c drm/i915: Store cpu_transcoder_mask in device info 2020-04-03 19:49:56 +03:00
i915_perf_types.h drm/i915/perf: Schedule oa_config after modifying the contexts 2020-03-30 18:20:34 +01:00
i915_perf.c drm/i915/perf: Do not clear pollin for small user read buffers 2020-04-03 18:55:02 +01:00
i915_perf.h
i915_pmu.c drm/i915/pmu: Avoid using globals for PMU events 2020-02-21 17:31:15 +00:00
i915_pmu.h drm/i915: significantly reduce the use of <drm/i915_drm.h> 2020-02-27 08:35:09 +02:00
i915_priolist_types.h
i915_pvinfo.h
i915_query.c
i915_query.h
i915_reg.h drm/i915: Implement port sync for SKL+ 2020-04-03 19:49:56 +03:00
i915_request.c drm/i915: Keep a per-engine request pool 2020-04-03 15:20:03 +01:00
i915_request.h drm/i915: Keep a per-engine request pool 2020-04-03 15:20:03 +01:00
i915_scatterlist.c
i915_scatterlist.h
i915_scheduler_types.h
i915_scheduler.c drm/i915/gt: Include a few tracek for timeslicing 2020-03-31 21:42:12 +01:00
i915_scheduler.h
i915_selftest.h
i915_suspend.c drm/i915: significantly reduce the use of <drm/i915_drm.h> 2020-02-27 08:35:09 +02:00
i915_suspend.h
i915_sw_fence_work.c drm/i915: Immediately execute the fenced work 2020-03-25 13:05:04 +00:00
i915_sw_fence_work.h drm/i915: Immediately execute the fenced work 2020-03-25 13:05:04 +00:00
i915_sw_fence.c drm/i915: Prefer '%ps' for printing function symbol names 2020-03-19 16:18:14 +00:00
i915_sw_fence.h drm/i915/gem: Don't leak non-persistent requests on changing engines 2020-02-11 21:58:39 +00:00
i915_switcheroo.c
i915_switcheroo.h
i915_syncmap.c
i915_syncmap.h
i915_sysfs.c drm/i915/gt: Expose engine properties via sysfs 2020-02-28 22:03:19 +00:00
i915_sysfs.h
i915_trace_points.c
i915_trace.h
i915_user_extensions.c
i915_user_extensions.h
i915_utils.c drm/i915: Avoid setting timer->expires to 0 2020-04-03 16:33:09 +01:00
i915_utils.h drm/i915/gt: Mark up racy check of last list element 2020-03-09 18:23:59 +00:00
i915_vgpu.c drm/i915/vgpu: improve vgpu abstractions 2020-03-03 17:46:54 +02:00
i915_vgpu.h drm/i915/vgpu: improve vgpu abstractions 2020-03-03 17:46:54 +02:00
i915_vma_types.h drm/i915/gem: Extract transient execbuf flags from i915_vma 2020-03-03 21:52:51 +00:00
i915_vma.c drm/i915: Check current i915_vma.pin_count status first on unbind 2020-04-03 19:39:57 +01:00
i915_vma.h drm/i915/gt: Make fence revocation unequivocal 2020-04-01 23:34:17 +01:00
intel_device_info.c drm/i915: Store cpu_transcoder_mask in device info 2020-04-03 19:49:56 +03:00
intel_device_info.h drm/i915: Store cpu_transcoder_mask in device info 2020-04-03 19:49:56 +03:00
intel_dram.c drm/i915/dram: hide the dram structs better 2020-03-02 13:32:27 +02:00
intel_dram.h drm/i915: split out intel_dram.[ch] from i915_drv.c 2020-02-27 09:16:01 +02:00
intel_gvt.c drm/i915/gvt: make intel_gvt_active internal to intel_gvt 2020-03-03 17:47:03 +02:00
intel_gvt.h
intel_memory_region.c
intel_memory_region.h
intel_pch.c
intel_pch.h
intel_pm.c drm/i915: Implement display w/a 1140 for glk/cnl 2020-03-05 15:53:33 +02:00
intel_pm.h
intel_region_lmem.c
intel_region_lmem.h
intel_runtime_pm.c
intel_runtime_pm.h
intel_sideband.c
intel_sideband.h
intel_uncore.c drm/i915/selftests: Measure the energy consumed while in RC6 2020-03-25 11:33:05 +00:00
intel_uncore.h drm/i915/selftests: Measure the energy consumed while in RC6 2020-03-25 11:33:05 +00:00
intel_wakeref.c drm/i915: Extend intel_wakeref to support delayed puts 2020-03-23 12:51:05 +00:00
intel_wakeref.h drm/i915: Extend intel_wakeref to support delayed puts 2020-03-23 12:51:05 +00:00
intel_wopcm.c drm/i915/wopcm: convert to drm device based logging 2020-03-25 19:47:41 +02:00
intel_wopcm.h
Kconfig drm/i915: Update drm/i915 bug filing URL 2020-02-17 11:16:05 +02:00
Kconfig.debug
Kconfig.profile drm/i915/gen12: Disable preemption timeout 2020-03-12 13:46:01 +00:00
Kconfig.unstable
Makefile drm/i915/uc: Move uC debugfs to its own folder under GT 2020-03-26 21:23:03 +00:00
vlv_suspend.c drm/i915: switch vlv_suspend to use intel uncore register accessors 2020-02-17 11:29:51 +02:00
vlv_suspend.h drm/i915: split out vlv/chv specific suspend/resume code 2020-02-17 11:29:35 +02:00