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drm/amdkfd: Add quiesce_mm and resume_mm to kgd2kfd_calls

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These interfaces allow KGD to stop and resume all GPU user mode queue
access to a process address space. This is needed for handling MMU
notifiers of userptrs mapped for GPU access in KFD VMs.

Signed-off-by: Felix Kuehling <Felix.Kuehling@amd.com>
Reviewed-by: Oded Gabbay <oded.gabbay@gmail.com>
Signed-off-by: Oded Gabbay <oded.gabbay@gmail.com>
This commit is contained in:
Felix Kuehling
2018-03-23 15:32:32 -04:00
committed by Oded Gabbay
parent d1853f42b6
commit 6b95e7973a
5 changed files with 55 additions and 5 deletions
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4
drivers/gpu/drm/amd/amdkfd/kfd_priv.h
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@@ -512,6 +512,8 @@ struct qcm_process_device {
/* Approx. time before evicting the process again */
#define PROCESS_ACTIVE_TIME_MS 10
int kgd2kfd_quiesce_mm(struct mm_struct *mm);
int kgd2kfd_resume_mm(struct mm_struct *mm);
int kgd2kfd_schedule_evict_and_restore_process(struct mm_struct *mm,
struct dma_fence *fence);
@@ -681,6 +683,8 @@ struct kfd_process *kfd_get_process(const struct task_struct *);
struct kfd_process *kfd_lookup_process_by_pasid(unsigned int pasid);
struct kfd_process *kfd_lookup_process_by_mm(const struct mm_struct *mm);
void kfd_unref_process(struct kfd_process *p);
int kfd_process_evict_queues(struct kfd_process *p);
int kfd_process_restore_queues(struct kfd_process *p);
void kfd_suspend_all_processes(void);
int kfd_resume_all_processes(void);