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| author |  Felix Kuehling <Felix.Kuehling@amd.com>
| 2021-03-29 18:49:12 -0400 |
|---|---|---|
| committer |  Alex Deucher <alexander.deucher@amd.com>
| 2021-04-20 21:50:35 -0400 |
| commit | 4ab159d2547c26b34a4ff4770598b72660da1461 (patch) | |
| tree | 7ebed7e4a926a030f93272d87e3532a376a78871 /drivers/gpu/drm/amd/amdkfd/kfd_svm.h | |
| parent | drm/amdkfd: Add SVM API support capability bits (diff) | |
| download | linux-4ab159d2547c26b34a4ff4770598b72660da1461.tar.gz linux-4ab159d2547c26b34a4ff4770598b72660da1461.tar.bz2 linux-4ab159d2547c26b34a4ff4770598b72660da1461.zip | |
drm/amdkfd: Add CONFIG_HSA_AMD_SVM
Control whether to build SVM support into amdgpu with a Kconfig option.
This makes it easier to disable it in production kernels if this new
feature causes problems in production environments.
Use "depends on" instead of "select" for DEVICE_PRIVATE, as is
recommended for visible options.
Reviewed-by: Philip Yang <Philip.Yang@amd.com>
Signed-off-by: Felix Kuehling <Felix.Kuehling@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Diffstat (limited to 'drivers/gpu/drm/amd/amdkfd/kfd_svm.h')
| -rw-r--r-- | drivers/gpu/drm/amd/amdkfd/kfd_svm.h | 30 |
1 files changed, 30 insertions, 0 deletions
diff --git a/drivers/gpu/drm/amd/amdkfd/kfd_svm.h b/drivers/gpu/drm/amd/amdkfd/kfd_svm.h index aa829b3c992d..573f984b81fe 100644 --- a/drivers/gpu/drm/amd/amdkfd/kfd_svm.h +++ b/drivers/gpu/drm/amd/amdkfd/kfd_svm.h @@ -25,6 +25,8 @@ #ifndef KFD_SVM_H_ #define KFD_SVM_H_ +#if IS_ENABLED(CONFIG_HSA_AMD_SVM) + #include <linux/rwsem.h> #include <linux/list.h> #include <linux/mutex.h> @@ -173,4 +175,32 @@ void svm_range_dma_unmap(struct device *dev, dma_addr_t *dma_addr, void svm_range_free_dma_mappings(struct svm_range *prange); void svm_range_prefault(struct svm_range *prange, struct mm_struct *mm); +#else + +struct kfd_process; + +static inline int svm_range_list_init(struct kfd_process *p) +{ + return 0; +} +static inline void svm_range_list_fini(struct kfd_process *p) +{ + /* empty */ +} + +static inline int svm_range_restore_pages(struct amdgpu_device *adev, + unsigned int pasid, uint64_t addr) +{ + return -EFAULT; +} + +static inline int svm_range_schedule_evict_svm_bo( + struct amdgpu_amdkfd_fence *fence) +{ + WARN_ONCE(1, "SVM eviction fence triggered, but SVM is disabled"); + return -EINVAL; +} + +#endif /* IS_ENABLED(CONFIG_HSA_AMD_SVM) */ + #endif /* KFD_SVM_H_ */ |