[drm-misc:drm-misc-next 3/11] htmldocs: drivers/gpu/drm/amd/amdgpu/amdgpu_device.c:5038: warning: expecting prototype for amdgpu_device_gpu_recover(). Prototype was for amdgpu_device_gpu_recover_imp() instead
From: kernel test robot
Date: Thu Feb 10 2022 - 01:17:39 EST
tree: git://anongit.freedesktop.org/drm/drm-misc drm-misc-next
head: 3675c2f26f33ab4928859fb8950a4697a16be5c9
commit: 54f329cc7a7a7ea265c45b206d45e3d09192aba7 [3/11] drm/amdgpu: Serialize non TDR gpu recovery with TDRs
reproduce: make htmldocs
If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp@xxxxxxxxx>
All warnings (new ones prefixed by >>):
>> drivers/gpu/drm/amd/amdgpu/amdgpu_device.c:5038: warning: expecting prototype for amdgpu_device_gpu_recover(). Prototype was for amdgpu_device_gpu_recover_imp() instead
vim +5038 drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
e6c6338f393b74a Jack Zhang 2021-03-08 5024
26bc534094ed45f Andrey Grodzovsky 2018-11-22 5025 /**
26bc534094ed45f Andrey Grodzovsky 2018-11-22 5026 * amdgpu_device_gpu_recover - reset the asic and recover scheduler
26bc534094ed45f Andrey Grodzovsky 2018-11-22 5027 *
982a820bac1b643 Mauro Carvalho Chehab 2020-10-21 5028 * @adev: amdgpu_device pointer
26bc534094ed45f Andrey Grodzovsky 2018-11-22 5029 * @job: which job trigger hang
26bc534094ed45f Andrey Grodzovsky 2018-11-22 5030 *
26bc534094ed45f Andrey Grodzovsky 2018-11-22 5031 * Attempt to reset the GPU if it has hung (all asics).
26bc534094ed45f Andrey Grodzovsky 2018-11-22 5032 * Attempt to do soft-reset or full-reset and reinitialize Asic
26bc534094ed45f Andrey Grodzovsky 2018-11-22 5033 * Returns 0 for success or an error on failure.
26bc534094ed45f Andrey Grodzovsky 2018-11-22 5034 */
26bc534094ed45f Andrey Grodzovsky 2018-11-22 5035
54f329cc7a7a7ea Andrey Grodzovsky 2021-12-17 5036 int amdgpu_device_gpu_recover_imp(struct amdgpu_device *adev,
26bc534094ed45f Andrey Grodzovsky 2018-11-22 5037 struct amdgpu_job *job)
26bc534094ed45f Andrey Grodzovsky 2018-11-22 @5038 {
1d721ed679db188 Andrey Grodzovsky 2019-04-18 5039 struct list_head device_list, *device_list_handle = NULL;
7dd8c205eaedfa3 Evan Quan 2020-04-16 5040 bool job_signaled = false;
26bc534094ed45f Andrey Grodzovsky 2018-11-22 5041 struct amdgpu_hive_info *hive = NULL;
26bc534094ed45f Andrey Grodzovsky 2018-11-22 5042 struct amdgpu_device *tmp_adev = NULL;
1d721ed679db188 Andrey Grodzovsky 2019-04-18 5043 int i, r = 0;
bb5c7235eaafb4e Wenhui Sheng 2020-07-13 5044 bool need_emergency_restart = false;
3f12acc8d6d4b2e Evan Quan 2020-04-21 5045 bool audio_suspended = false;
e6c6338f393b74a Jack Zhang 2021-03-08 5046 int tmp_vram_lost_counter;
04442bf70debb19 Lijo Lazar 2021-03-16 5047 struct amdgpu_reset_context reset_context;
04442bf70debb19 Lijo Lazar 2021-03-16 5048
04442bf70debb19 Lijo Lazar 2021-03-16 5049 memset(&reset_context, 0, sizeof(reset_context));
26bc534094ed45f Andrey Grodzovsky 2018-11-22 5050
6e3cd2a9a6ac322 Mauro Carvalho Chehab 2020-10-23 5051 /*
bb5c7235eaafb4e Wenhui Sheng 2020-07-13 5052 * Special case: RAS triggered and full reset isn't supported
bb5c7235eaafb4e Wenhui Sheng 2020-07-13 5053 */
bb5c7235eaafb4e Wenhui Sheng 2020-07-13 5054 need_emergency_restart = amdgpu_ras_need_emergency_restart(adev);
bb5c7235eaafb4e Wenhui Sheng 2020-07-13 5055
d5ea093eebf022e Andrey Grodzovsky 2019-08-22 5056 /*
d5ea093eebf022e Andrey Grodzovsky 2019-08-22 5057 * Flush RAM to disk so that after reboot
d5ea093eebf022e Andrey Grodzovsky 2019-08-22 5058 * the user can read log and see why the system rebooted.
d5ea093eebf022e Andrey Grodzovsky 2019-08-22 5059 */
bb5c7235eaafb4e Wenhui Sheng 2020-07-13 5060 if (need_emergency_restart && amdgpu_ras_get_context(adev)->reboot) {
d5ea093eebf022e Andrey Grodzovsky 2019-08-22 5061 DRM_WARN("Emergency reboot.");
d5ea093eebf022e Andrey Grodzovsky 2019-08-22 5062
d5ea093eebf022e Andrey Grodzovsky 2019-08-22 5063 ksys_sync_helper();
d5ea093eebf022e Andrey Grodzovsky 2019-08-22 5064 emergency_restart();
d5ea093eebf022e Andrey Grodzovsky 2019-08-22 5065 }
d5ea093eebf022e Andrey Grodzovsky 2019-08-22 5066
b823821f2244add Le Ma 2019-11-27 5067 dev_info(adev->dev, "GPU %s begin!\n",
bb5c7235eaafb4e Wenhui Sheng 2020-07-13 5068 need_emergency_restart ? "jobs stop":"reset");
26bc534094ed45f Andrey Grodzovsky 2018-11-22 5069
26bc534094ed45f Andrey Grodzovsky 2018-11-22 5070 /*
1d721ed679db188 Andrey Grodzovsky 2019-04-18 5071 * Here we trylock to avoid chain of resets executing from
1d721ed679db188 Andrey Grodzovsky 2019-04-18 5072 * either trigger by jobs on different adevs in XGMI hive or jobs on
1d721ed679db188 Andrey Grodzovsky 2019-04-18 5073 * different schedulers for same device while this TO handler is running.
1d721ed679db188 Andrey Grodzovsky 2019-04-18 5074 * We always reset all schedulers for device and all devices for XGMI
1d721ed679db188 Andrey Grodzovsky 2019-04-18 5075 * hive so that should take care of them too.
26bc534094ed45f Andrey Grodzovsky 2018-11-22 5076 */
175ac6ec6bd8db6 Zhigang Luo 2021-11-26 5077 if (!amdgpu_sriov_vf(adev))
d95e8e97e2d522b Dennis Li 2020-08-18 5078 hive = amdgpu_get_xgmi_hive(adev);
53b3f8f40e6cff3 Dennis Li 2020-08-19 5079 if (hive) {
53b3f8f40e6cff3 Dennis Li 2020-08-19 5080 if (atomic_cmpxchg(&hive->in_reset, 0, 1) != 0) {
1d721ed679db188 Andrey Grodzovsky 2019-04-18 5081 DRM_INFO("Bailing on TDR for s_job:%llx, hive: %llx as another already in progress",
0b2d2c2eecf27f4 Andrey Grodzovsky 2019-08-27 5082 job ? job->base.id : -1, hive->hive_id);
d95e8e97e2d522b Dennis Li 2020-08-18 5083 amdgpu_put_xgmi_hive(hive);
ff99849b00fef59 Jingwen Chen 2021-07-20 5084 if (job && job->vm)
91fb309d8294be5 Horace Chen 2021-01-20 5085 drm_sched_increase_karma(&job->base);
26bc534094ed45f Andrey Grodzovsky 2018-11-22 5086 return 0;
1d721ed679db188 Andrey Grodzovsky 2019-04-18 5087 }
53b3f8f40e6cff3 Dennis Li 2020-08-19 5088 mutex_lock(&hive->hive_lock);
53b3f8f40e6cff3 Dennis Li 2020-08-19 5089 }
26bc534094ed45f Andrey Grodzovsky 2018-11-22 5090
04442bf70debb19 Lijo Lazar 2021-03-16 5091 reset_context.method = AMD_RESET_METHOD_NONE;
04442bf70debb19 Lijo Lazar 2021-03-16 5092 reset_context.reset_req_dev = adev;
04442bf70debb19 Lijo Lazar 2021-03-16 5093 reset_context.job = job;
04442bf70debb19 Lijo Lazar 2021-03-16 5094 reset_context.hive = hive;
04442bf70debb19 Lijo Lazar 2021-03-16 5095 clear_bit(AMDGPU_NEED_FULL_RESET, &reset_context.flags);
04442bf70debb19 Lijo Lazar 2021-03-16 5096
91fb309d8294be5 Horace Chen 2021-01-20 5097 /*
91fb309d8294be5 Horace Chen 2021-01-20 5098 * lock the device before we try to operate the linked list
91fb309d8294be5 Horace Chen 2021-01-20 5099 * if didn't get the device lock, don't touch the linked list since
91fb309d8294be5 Horace Chen 2021-01-20 5100 * others may iterating it.
91fb309d8294be5 Horace Chen 2021-01-20 5101 */
91fb309d8294be5 Horace Chen 2021-01-20 5102 r = amdgpu_device_lock_hive_adev(adev, hive);
91fb309d8294be5 Horace Chen 2021-01-20 5103 if (r) {
91fb309d8294be5 Horace Chen 2021-01-20 5104 dev_info(adev->dev, "Bailing on TDR for s_job:%llx, as another already in progress",
91fb309d8294be5 Horace Chen 2021-01-20 5105 job ? job->base.id : -1);
91fb309d8294be5 Horace Chen 2021-01-20 5106
91fb309d8294be5 Horace Chen 2021-01-20 5107 /* even we skipped this reset, still need to set the job to guilty */
ff99849b00fef59 Jingwen Chen 2021-07-20 5108 if (job && job->vm)
91fb309d8294be5 Horace Chen 2021-01-20 5109 drm_sched_increase_karma(&job->base);
91fb309d8294be5 Horace Chen 2021-01-20 5110 goto skip_recovery;
91fb309d8294be5 Horace Chen 2021-01-20 5111 }
91fb309d8294be5 Horace Chen 2021-01-20 5112
26bc534094ed45f Andrey Grodzovsky 2018-11-22 5113 /*
9e94d22c0085858 Evan Quan 2020-04-16 5114 * Build list of devices to reset.
9e94d22c0085858 Evan Quan 2020-04-16 5115 * In case we are in XGMI hive mode, resort the device list
9e94d22c0085858 Evan Quan 2020-04-16 5116 * to put adev in the 1st position.
26bc534094ed45f Andrey Grodzovsky 2018-11-22 5117 */
9e94d22c0085858 Evan Quan 2020-04-16 5118 INIT_LIST_HEAD(&device_list);
175ac6ec6bd8db6 Zhigang Luo 2021-11-26 5119 if (!amdgpu_sriov_vf(adev) && (adev->gmc.xgmi.num_physical_nodes > 1)) {
655ce9cb13b5967 shaoyunl 2021-03-04 5120 list_for_each_entry(tmp_adev, &hive->device_list, gmc.xgmi.head)
655ce9cb13b5967 shaoyunl 2021-03-04 5121 list_add_tail(&tmp_adev->reset_list, &device_list);
655ce9cb13b5967 shaoyunl 2021-03-04 5122 if (!list_is_first(&adev->reset_list, &device_list))
655ce9cb13b5967 shaoyunl 2021-03-04 5123 list_rotate_to_front(&adev->reset_list, &device_list);
655ce9cb13b5967 shaoyunl 2021-03-04 5124 device_list_handle = &device_list;
26bc534094ed45f Andrey Grodzovsky 2018-11-22 5125 } else {
655ce9cb13b5967 shaoyunl 2021-03-04 5126 list_add_tail(&adev->reset_list, &device_list);
26bc534094ed45f Andrey Grodzovsky 2018-11-22 5127 device_list_handle = &device_list;
26bc534094ed45f Andrey Grodzovsky 2018-11-22 5128 }
26bc534094ed45f Andrey Grodzovsky 2018-11-22 5129
12ffa55da60f835 Andrey Grodzovsky 2019-08-30 5130 /* block all schedulers and reset given job's ring */
655ce9cb13b5967 shaoyunl 2021-03-04 5131 list_for_each_entry(tmp_adev, device_list_handle, reset_list) {
3f12acc8d6d4b2e Evan Quan 2020-04-21 5132 /*
3f12acc8d6d4b2e Evan Quan 2020-04-21 5133 * Try to put the audio codec into suspend state
3f12acc8d6d4b2e Evan Quan 2020-04-21 5134 * before gpu reset started.
3f12acc8d6d4b2e Evan Quan 2020-04-21 5135 *
3f12acc8d6d4b2e Evan Quan 2020-04-21 5136 * Due to the power domain of the graphics device
3f12acc8d6d4b2e Evan Quan 2020-04-21 5137 * is shared with AZ power domain. Without this,
3f12acc8d6d4b2e Evan Quan 2020-04-21 5138 * we may change the audio hardware from behind
3f12acc8d6d4b2e Evan Quan 2020-04-21 5139 * the audio driver's back. That will trigger
3f12acc8d6d4b2e Evan Quan 2020-04-21 5140 * some audio codec errors.
3f12acc8d6d4b2e Evan Quan 2020-04-21 5141 */
3f12acc8d6d4b2e Evan Quan 2020-04-21 5142 if (!amdgpu_device_suspend_display_audio(tmp_adev))
3f12acc8d6d4b2e Evan Quan 2020-04-21 5143 audio_suspended = true;
3f12acc8d6d4b2e Evan Quan 2020-04-21 5144
9e94d22c0085858 Evan Quan 2020-04-16 5145 amdgpu_ras_set_error_query_ready(tmp_adev, false);
9e94d22c0085858 Evan Quan 2020-04-16 5146
52fb44cf30fc6b1 Evan Quan 2020-04-16 5147 cancel_delayed_work_sync(&tmp_adev->delayed_init_work);
52fb44cf30fc6b1 Evan Quan 2020-04-16 5148
428890a3fec1315 shaoyunl 2021-11-29 5149 if (!amdgpu_sriov_vf(tmp_adev))
9e94d22c0085858 Evan Quan 2020-04-16 5150 amdgpu_amdkfd_pre_reset(tmp_adev);
9e94d22c0085858 Evan Quan 2020-04-16 5151
fdafb3597a2cc46 Evan Quan 2019-06-26 5152 /*
fdafb3597a2cc46 Evan Quan 2019-06-26 5153 * Mark these ASICs to be reseted as untracked first
fdafb3597a2cc46 Evan Quan 2019-06-26 5154 * And add them back after reset completed
fdafb3597a2cc46 Evan Quan 2019-06-26 5155 */
fdafb3597a2cc46 Evan Quan 2019-06-26 5156 amdgpu_unregister_gpu_instance(tmp_adev);
fdafb3597a2cc46 Evan Quan 2019-06-26 5157
087451f372bf76d Evan Quan 2021-10-19 5158 drm_fb_helper_set_suspend_unlocked(adev_to_drm(adev)->fb_helper, true);
565d1941557756a Evan Quan 2020-03-11 5159
f1c1314be429718 xinhui pan 2019-07-04 5160 /* disable ras on ALL IPs */
bb5c7235eaafb4e Wenhui Sheng 2020-07-13 5161 if (!need_emergency_restart &&
b823821f2244add Le Ma 2019-11-27 5162 amdgpu_device_ip_need_full_reset(tmp_adev))
f1c1314be429718 xinhui pan 2019-07-04 5163 amdgpu_ras_suspend(tmp_adev);
f1c1314be429718 xinhui pan 2019-07-04 5164
1d721ed679db188 Andrey Grodzovsky 2019-04-18 5165 for (i = 0; i < AMDGPU_MAX_RINGS; ++i) {
1d721ed679db188 Andrey Grodzovsky 2019-04-18 5166 struct amdgpu_ring *ring = tmp_adev->rings[i];
1d721ed679db188 Andrey Grodzovsky 2019-04-18 5167
1d721ed679db188 Andrey Grodzovsky 2019-04-18 5168 if (!ring || !ring->sched.thread)
1d721ed679db188 Andrey Grodzovsky 2019-04-18 5169 continue;
1d721ed679db188 Andrey Grodzovsky 2019-04-18 5170
0b2d2c2eecf27f4 Andrey Grodzovsky 2019-08-27 5171 drm_sched_stop(&ring->sched, job ? &job->base : NULL);
7c6e68c777f1094 Andrey Grodzovsky 2019-09-13 5172
bb5c7235eaafb4e Wenhui Sheng 2020-07-13 5173 if (need_emergency_restart)
7c6e68c777f1094 Andrey Grodzovsky 2019-09-13 5174 amdgpu_job_stop_all_jobs_on_sched(&ring->sched);
1d721ed679db188 Andrey Grodzovsky 2019-04-18 5175 }
8f8c80f43009672 Jingwen Chen 2021-02-25 5176 atomic_inc(&tmp_adev->gpu_reset_counter);
1d721ed679db188 Andrey Grodzovsky 2019-04-18 5177 }
1d721ed679db188 Andrey Grodzovsky 2019-04-18 5178
bb5c7235eaafb4e Wenhui Sheng 2020-07-13 5179 if (need_emergency_restart)
7c6e68c777f1094 Andrey Grodzovsky 2019-09-13 5180 goto skip_sched_resume;
7c6e68c777f1094 Andrey Grodzovsky 2019-09-13 5181
1d721ed679db188 Andrey Grodzovsky 2019-04-18 5182 /*
1d721ed679db188 Andrey Grodzovsky 2019-04-18 5183 * Must check guilty signal here since after this point all old
1d721ed679db188 Andrey Grodzovsky 2019-04-18 5184 * HW fences are force signaled.
1d721ed679db188 Andrey Grodzovsky 2019-04-18 5185 *
1d721ed679db188 Andrey Grodzovsky 2019-04-18 5186 * job->base holds a reference to parent fence
1d721ed679db188 Andrey Grodzovsky 2019-04-18 5187 */
1d721ed679db188 Andrey Grodzovsky 2019-04-18 5188 if (job && job->base.s_fence->parent &&
7dd8c205eaedfa3 Evan Quan 2020-04-16 5189 dma_fence_is_signaled(job->base.s_fence->parent)) {
1d721ed679db188 Andrey Grodzovsky 2019-04-18 5190 job_signaled = true;
1d721ed679db188 Andrey Grodzovsky 2019-04-18 5191 dev_info(adev->dev, "Guilty job already signaled, skipping HW reset");
1d721ed679db188 Andrey Grodzovsky 2019-04-18 5192 goto skip_hw_reset;
1d721ed679db188 Andrey Grodzovsky 2019-04-18 5193 }
1d721ed679db188 Andrey Grodzovsky 2019-04-18 5194
:::::: The code at line 5038 was first introduced by commit
:::::: 26bc534094ed45fdedef6b4ce8b96030340c5ce7 drm/amdgpu: Refactor GPU reset for XGMI hive case
:::::: TO: Andrey Grodzovsky <andrey.grodzovsky@xxxxxxx>
:::::: CC: Alex Deucher <alexander.deucher@xxxxxxx>
---
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