diff options
| author | Felix Kuehling <Felix.Kuehling@amd.com> | 2018-02-06 20:32:35 -0500 |
|---|---|---|
| committer | Oded Gabbay <oded.gabbay@gmail.com> | 2018-02-06 20:32:35 -0500 |
| commit | d8d019ccffb838bb0dd98e583b5c25ccc0bc6ece (patch) | |
| tree | 660d1ea42b915579fc4b12ad717bcbcaf49254f6 /drivers/gpu/drm/amd/include/kgd_kfd_interface.h | |
| parent | 1029a3f33678afb8978285209ec5cfe153fe44ef (diff) | |
drm/amdgpu: Add KFD eviction fence
This fence is used by KFD to keep memory resident while user mode
queues are enabled. Trying to evict memory will trigger the
enable_signaling callback, which starts a KFD eviction, which
involves preempting user mode queues before signaling the fence.
There is one such fence per process.
v2:
* Grab a reference to mm_struct
* Dereference fence after NULL check
* Simplify fence release, no need to signal without anyone waiting
* Added signed-off-by Harish, who is the original author of this code
v3:
* update MAINTAINERS file
* change amd_kfd_ prefix to amdkfd_
* remove useless initialization of variable to NULL
v4:
* set amdkfd_fence_ops to be static
* Suggested by: Fengguang Wu <fengguang.wu@intel.com>
Signed-off-by: Harish Kasiviswanathan <Harish.Kasiviswanathan@amd.com>
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>
Diffstat (limited to 'drivers/gpu/drm/amd/include/kgd_kfd_interface.h')
| -rw-r--r-- | drivers/gpu/drm/amd/include/kgd_kfd_interface.h | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/drivers/gpu/drm/amd/include/kgd_kfd_interface.h b/drivers/gpu/drm/amd/include/kgd_kfd_interface.h index 94eab54864bf..9e352499c409 100644 --- a/drivers/gpu/drm/amd/include/kgd_kfd_interface.h +++ b/drivers/gpu/drm/amd/include/kgd_kfd_interface.h @@ -30,6 +30,7 @@ #include <linux/types.h> #include <linux/bitmap.h> +#include <linux/dma-fence.h> struct pci_dev; @@ -286,6 +287,9 @@ struct kfd2kgd_calls { * * @resume: Notifies amdkfd about a resume action done to a kgd device * + * @schedule_evict_and_restore_process: Schedules work queue that will prepare + * for safe eviction of KFD BOs that belong to the specified process. + * * This structure contains function callback pointers so the kgd driver * will notify to the amdkfd about certain status changes. * @@ -300,6 +304,8 @@ struct kgd2kfd_calls { void (*interrupt)(struct kfd_dev *kfd, const void *ih_ring_entry); void (*suspend)(struct kfd_dev *kfd); int (*resume)(struct kfd_dev *kfd); + int (*schedule_evict_and_restore_process)(struct mm_struct *mm, + struct dma_fence *fence); }; int kgd2kfd_init(unsigned interface_version, |