<div dir="auto"><div>Hi, see inline comment below. <div class="gmail_quote"><div dir="ltr" class="gmail_attr">Den tis 25 aug. 2020 21:12Mukul Joshi <<a href="mailto:mukul.joshi@amd.com">mukul.joshi@amd.com</a>> skrev: </div><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">Add support for reporting GPU reset events through SMI. KFD would report both pre and post GPU reset events. Signed-off-by: Mukul Joshi <<a href="mailto:mukul.joshi@amd.com" target="_blank" rel="noreferrer">mukul.joshi@amd.com</a>> --- drivers/gpu/drm/amd/amdkfd/kfd_device.c | 4 +++ drivers/gpu/drm/amd/amdkfd/kfd_priv.h | 2 ++ drivers/gpu/drm/amd/amdkfd/kfd_smi_events.c | 30 +++++++++++++++++++++ drivers/gpu/drm/amd/amdkfd/kfd_smi_events.h | 1 + include/uapi/linux/kfd_ioctl.h | 2 ++ 5 files changed, 39 insertions(+) diff --git a/drivers/gpu/drm/amd/amdkfd/kfd_device.c b/drivers/gpu/drm/amd/amdkfd/kfd_device.c index e1cd6599529f..aad1ecfa1239 100644 --- a/drivers/gpu/drm/amd/amdkfd/kfd_device.c +++ b/drivers/gpu/drm/amd/amdkfd/kfd_device.c @@ -812,6 +812,8 @@ int kgd2kfd_pre_reset(struct kfd_dev *kfd) if (!kfd->init_complete) return 0; + kfd_smi_event_update_gpu_reset(kfd, false); + kfd->dqm->ops.pre_reset(kfd->dqm); kgd2kfd_suspend(kfd, false); @@ -833,6 +835,8 @@ int kgd2kfd_post_reset(struct kfd_dev *kfd) if (!kfd->init_complete) return 0; + kfd_smi_event_update_gpu_reset(kfd, true); + ret = kfd_resume(kfd); if (ret) return ret; diff --git a/drivers/gpu/drm/amd/amdkfd/kfd_priv.h b/drivers/gpu/drm/amd/amdkfd/kfd_priv.h index 18bc711f97ae..b1a2979e086f 100644 --- a/drivers/gpu/drm/amd/amdkfd/kfd_priv.h +++ b/drivers/gpu/drm/amd/amdkfd/kfd_priv.h @@ -312,6 +312,8 @@ struct kfd_dev { /* Clients watching SMI events */ struct list_head smi_clients; spinlock_t smi_lock; + + uint64_t reset_seq_num; }; enum kfd_mempool { diff --git a/drivers/gpu/drm/amd/amdkfd/kfd_smi_events.c b/drivers/gpu/drm/amd/amdkfd/kfd_smi_events.c index 4d4b6e3ab697..448abfdde230 100644 --- a/drivers/gpu/drm/amd/amdkfd/kfd_smi_events.c +++ b/drivers/gpu/drm/amd/amdkfd/kfd_smi_events.c @@ -174,6 +174,36 @@ static void add_event_to_kfifo(struct kfd_dev *dev, unsigned int smi_event, rcu_read_unlock(); } +void kfd_smi_event_update_gpu_reset(struct kfd_dev *dev, bool post_reset) +{ + /* + * GpuReset msg = Reset seq number (incremented for + * every reset message sent before GPU reset). + * 1 byte event + 1 byte space + 16 bytes seq num + + * 1 byte \n + 1 byte \0 = 20 + */ + char fifo_in[20]; + int len; + unsigned int event; + + if (list_empty(&dev->smi_clients)) { + return; + } + + memset(fifo_in, 0x0, sizeof(fifo_in)); + + if (post_reset) { + event = KFD_SMI_EVENT_GPU_POST_RESET; + } else { + event = KFD_SMI_EVENT_GPU_PRE_RESET; + ++(dev->reset_seq_num); + } + + len = snprintf(fifo_in, 4, "%x %llx\n", event, dev->reset_seq_num); </blockquote></div></div><div dir="auto"> </div><div dir="auto">I think the 4 will cause truncation of the message here.</div><div dir="auto"> </div><div dir="auto">Regards</div><div dir="auto">Nils</div><div dir="auto"> </div><div dir="auto"><div class="gmail_quote"><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"> + + add_event_to_kfifo(dev, event, fifo_in, len); +} + void kfd_smi_event_update_thermal_throttling(struct kfd_dev *dev, uint32_t throttle_bitmask) { diff --git a/drivers/gpu/drm/amd/amdkfd/kfd_smi_events.h b/drivers/gpu/drm/amd/amdkfd/kfd_smi_events.h index 15537b2cccb5..b9b0438202e2 100644 --- a/drivers/gpu/drm/amd/amdkfd/kfd_smi_events.h +++ b/drivers/gpu/drm/amd/amdkfd/kfd_smi_events.h @@ -27,5 +27,6 @@ int kfd_smi_event_open(struct kfd_dev *dev, uint32_t *fd); void kfd_smi_event_update_vmfault(struct kfd_dev *dev, uint16_t pasid); void kfd_smi_event_update_thermal_throttling(struct kfd_dev *dev, uint32_t throttle_bitmask); +void kfd_smi_event_update_gpu_reset(struct kfd_dev *dev, bool post_reset); #endif diff --git a/include/uapi/linux/kfd_ioctl.h b/include/uapi/linux/kfd_ioctl.h index cb1f963a84e0..8b7368bfbd84 100644 --- a/include/uapi/linux/kfd_ioctl.h +++ b/include/uapi/linux/kfd_ioctl.h @@ -453,6 +453,8 @@ enum kfd_smi_event { KFD_SMI_EVENT_NONE = 0, /* not used */ KFD_SMI_EVENT_VMFAULT = 1, /* event start counting at 1 */ KFD_SMI_EVENT_THERMAL_THROTTLE = 2, + KFD_SMI_EVENT_GPU_PRE_RESET = 3, + KFD_SMI_EVENT_GPU_POST_RESET = 4, }; #define KFD_SMI_EVENT_MASK_FROM_INDEX(i) (1ULL << ((i) - 1)) -- 2.17.1 _______________________________________________ amd-gfx mailing list <a href="mailto:amd-gfx@lists.freedesktop.org" target="_blank" rel="noreferrer">amd-gfx@lists.freedesktop.org</a> <a href="https://lists.freedesktop.org/mailman/listinfo/amd-gfx" rel="noreferrer noreferrer" target="_blank">https://lists.freedesktop.org/mailman/listinfo/amd-gfx</a> </blockquote></div></div></div>