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From 50f70911de48a5002f7aa4bb871bb7417fd9bdf9 Mon Sep 17 00:00:00 2001
From: Shaoyun Liu <Shaoyun.Liu@amd.com>
Date: Tue, 3 Apr 2018 16:11:00 -0400
Subject: [PATCH 5633/5725] drm/amdkfd: signal hw_exception event on GPU reset
Change-Id: I8fae18208103920796f81858f359a9cec563125c
Signed-off-by: Shaoyun Liu <Shaoyun.Liu@amd.com>
Reviewed-by: Felix Kuehling <Felix.Kuehling@amd.com>
Signed-off-by: Kalyan Alle <kalyan.alle@amd.com>
---
drivers/gpu/drm/amd/amdkfd/kfd_events.c | 24 +++++++++++++++++++++++-
drivers/gpu/drm/amd/amdkfd/kfd_events.h | 1 +
2 files changed, 24 insertions(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/amd/amdkfd/kfd_events.c b/drivers/gpu/drm/amd/amdkfd/kfd_events.c
index 09c1c31..24d8a21 100644
--- a/drivers/gpu/drm/amd/amdkfd/kfd_events.c
+++ b/drivers/gpu/drm/amd/amdkfd/kfd_events.c
@@ -1012,5 +1012,27 @@ void kfd_signal_vm_fault_event(struct kfd_dev *dev, unsigned int pasid,
void kfd_signal_reset_event(struct kfd_dev *dev)
{
- /*todo*/
+ struct kfd_hsa_hw_exception_data hw_exception_data;
+ struct kfd_process *p;
+ struct kfd_event *ev;
+ unsigned int temp;
+ uint32_t id, idx;
+
+ /* Whole gpu reset caused by GPU hang , and memory is lost */
+ memset(&hw_exception_data, 0, sizeof(hw_exception_data));
+ hw_exception_data.gpu_id = dev->id;
+ hw_exception_data.memory_lost = 1;
+
+ idx = srcu_read_lock(&kfd_processes_srcu);
+ hash_for_each_rcu(kfd_processes_table, temp, p, kfd_processes) {
+ mutex_lock(&p->event_mutex);
+ id = KFD_FIRST_NONSIGNAL_EVENT_ID;
+ idr_for_each_entry_continue(&p->event_idr, ev, id)
+ if (ev->type == KFD_EVENT_TYPE_HW_EXCEPTION) {
+ ev->hw_exception_data = hw_exception_data;
+ set_event(ev);
+ }
+ mutex_unlock(&p->event_mutex);
+ }
+ srcu_read_unlock(&kfd_processes_srcu, idx);
}
diff --git a/drivers/gpu/drm/amd/amdkfd/kfd_events.h b/drivers/gpu/drm/amd/amdkfd/kfd_events.h
index abca5bf..c7ac6c7 100644
--- a/drivers/gpu/drm/amd/amdkfd/kfd_events.h
+++ b/drivers/gpu/drm/amd/amdkfd/kfd_events.h
@@ -66,6 +66,7 @@ struct kfd_event {
/* type specific data */
union {
struct kfd_hsa_memory_exception_data memory_exception_data;
+ struct kfd_hsa_hw_exception_data hw_exception_data;
};
};
--
2.7.4
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