drm/amdgpu: Add KFD VRAM limit checking

We don't want KFD processes evicting each other over VRAM usage.
Therefore prevent overcommitting VRAM among KFD applications with
a per-GPU limit. Also leave enough room for page tables on top
of the application memory usage.

Acked-by: Alex Deucher <[email protected]>
Signed-off-by: Felix Kuehling <[email protected]>
Reviewed-by: Eric Huang <[email protected]>
Signed-off-by: Alex Deucher <[email protected]>

1 files changed, 4 insertions, 3 deletions

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu.h b/drivers/gpu/drm/amd/amdgpu/amdgpu.h
index 6fc023bae7fe..5752024aa572 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu.h
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu.h
@@ -82,6 +82,7 @@
 #include "amdgpu_bo_list.h"
 #include "amdgpu_gem.h"
 #include "amdgpu_doorbell.h"
+#include "amdgpu_amdkfd.h"
 
 #define MAX_GPU_INSTANCE		16
 
@@ -862,6 +863,9 @@ struct amdgpu_device {
 	/* GDS */
 	struct amdgpu_gds		gds;
 
+	/* KFD */
+	struct amdgpu_kfd_dev		kfd;
+
 	/* display related functionality */
 	struct amdgpu_display_manager dm;
 
@@ -875,9 +879,6 @@ struct amdgpu_device {
 	atomic64_t visible_pin_size;
 	atomic64_t gart_pin_size;
 
-	/* amdkfd interface */
-	struct kfd_dev          *kfd;
-
 	/* soc15 register offset based on ip, instance and  segment */
 	uint32_t 		*reg_offset[MAX_HWIP][HWIP_MAX_INSTANCE];