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drm/amdgpu: Add KFD VRAM limit checking

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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 <alexander.deucher@amd.com>
Signed-off-by: Felix Kuehling <Felix.Kuehling@amd.com>
Reviewed-by: Eric Huang <JinHuiEric.Huang@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Felix Kuehling
2018-11-19 20:05:54 -05:00
committed by Alex Deucher
parent 5634e38cda
commit 611736d844
5 changed files with 75 additions and 54 deletions
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7
drivers/gpu/drm/amd/amdgpu/amdgpu.h
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@@ -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];