bybrooklyn/linux
1
0
Fork 0
mirror of https://github.com/torvalds/linux.git synced 2026-04-19 07:13:56 -04:00
Code Issues Packages Projects Releases Wiki Activity

drm/amdkfd: Add quiesce_mm and resume_mm to kgd2kfd_calls

Browse Source 
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
Download Patch File Download Diff File Expand all files Collapse all files

10
drivers/gpu/drm/amd/amdkfd/kfd_process.c
View File

@@ -808,7 +808,7 @@ struct kfd_process *kfd_lookup_process_by_mm(const struct mm_struct *mm)
* Eviction is reference-counted per process-device. This means multiple
* evictions from different sources can be nested safely.
*/
static int process_evict_queues(struct kfd_process *p)
int kfd_process_evict_queues(struct kfd_process *p)
{
struct kfd_process_device *pdd;
int r = 0;
@@ -844,7 +844,7 @@ fail:
}
/* process_restore_queues - Restore all user queues of a process */
static int process_restore_queues(struct kfd_process *p)
int kfd_process_restore_queues(struct kfd_process *p)
{
struct kfd_process_device *pdd;
int r, ret = 0;
@@ -886,7 +886,7 @@ static void evict_process_worker(struct work_struct *work)
flush_delayed_work(&p->restore_work);
pr_debug("Started evicting pasid %d\n", p->pasid);
ret = process_evict_queues(p);
ret = kfd_process_evict_queues(p);
if (!ret) {
dma_fence_signal(p->ef);
dma_fence_put(p->ef);
@@ -946,7 +946,7 @@ static void restore_process_worker(struct work_struct *work)
return;
}
ret = process_restore_queues(p);
ret = kfd_process_restore_queues(p);
if (!ret)
pr_debug("Finished restoring pasid %d\n", p->pasid);
else
@@ -963,7 +963,7 @@ void kfd_suspend_all_processes(void)
cancel_delayed_work_sync(&p->eviction_work);
cancel_delayed_work_sync(&p->restore_work);
if (process_evict_queues(p))
if (kfd_process_evict_queues(p))
pr_err("Failed to suspend process %d\n", p->pasid);
dma_fence_signal(p->ef);
dma_fence_put(p->ef);