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drm/amdkfd: Add bad opcode exception handling

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Signed-off-by: Alexey Skidanov <alexey.skidanov@gmail.com>
Signed-off-by: Oded Gabbay <oded.gabbay@gmail.com>
This commit is contained in:
Alexey Skidanov
2014-11-25 10:34:31 +02:00
committed by Oded Gabbay
parent 59d3e8be87
commit 930c5ff439
5 changed files with 29 additions and 1 deletions
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21
drivers/gpu/drm/amd/amdkfd/kfd_events.c
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@@ -936,3 +936,24 @@ void kfd_signal_iommu_event(struct kfd_dev *dev, unsigned int pasid,
mutex_unlock(&p->event_mutex);
mutex_unlock(&p->mutex);
}
void kfd_signal_hw_exception_event(unsigned int pasid)
{
/*
* Because we are called from arbitrary context (workqueue) as opposed
* to process context, kfd_process could attempt to exit while we are
* running so the lookup function returns a locked process.
*/
struct kfd_process *p = kfd_lookup_process_by_pasid(pasid);
if (!p)
return; /* Presumably process exited. */
mutex_lock(&p->event_mutex);
/* Lookup events by type and signal them */
lookup_events_by_type_and_signal(p, KFD_EVENT_TYPE_HW_EXCEPTION, NULL);
mutex_unlock(&p->event_mutex);
mutex_unlock(&p->mutex);
}