diff options
| author | Philip Yang <Philip.Yang@amd.com> | 2024-11-13 06:07:33 +0300 |
|---|---|---|
| committer | Alex Deucher <alexander.deucher@amd.com> | 2024-12-18 20:39:07 +0300 |
| commit | 1b00143231d3e6f4b76f88f4edd6bb8a1332ef9b (patch) | |
| tree | 2a36ece08a5459a427f88a682565f64683635907 /drivers/gpu/drm/amd/amdgpu | |
| parent | f607b2b867bbef8a3a76de8d0eccf7429782bdca (diff) | |
| download | linux-1b00143231d3e6f4b76f88f4edd6bb8a1332ef9b.tar.xz | |
drm/amdgpu: Optimize gfx v9 GPU page fault handling
After GPU page fault, there are lots of page fault interrupts generated
at short period even with CAM filter enabled because the fault address
is different. Each page fault copy to KFD ih fifo to send event to user
space by KFD interrupt worker, this could cause KFD ih fifo overflow
while other processes generate events at same time.
KFD process is aborted after GPU page fault, we only need one GPU page
fault interrupt sent to KFD ih fifo to send memory exception event to
user space.
Incease KFD ih fifo size to 2 times of IH primary ring size, to handle
the burst events case.
This patch handle the gfx v9 path, cover retry on/off and CAM filter
on/off cases.
Signed-off-by: Philip Yang <Philip.Yang@amd.com>
Reviewed-by: Felix Kuehling <felix.kuehling@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Diffstat (limited to 'drivers/gpu/drm/amd/amdgpu')
| -rw-r--r-- | drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd.h | 10 | ||||
| -rw-r--r-- | drivers/gpu/drm/amd/amdgpu/gmc_v9_0.c | 3 |
2 files changed, 13 insertions, 0 deletions
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd.h b/drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd.h index 4b80ad860639..8af67f18500a 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd.h +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd.h @@ -433,6 +433,9 @@ void kgd2kfd_unlock_kfd(void); int kgd2kfd_start_sched(struct kfd_dev *kfd, uint32_t node_id); int kgd2kfd_stop_sched(struct kfd_dev *kfd, uint32_t node_id); bool kgd2kfd_compute_active(struct kfd_dev *kfd, uint32_t node_id); +bool kgd2kfd_vmfault_fast_path(struct amdgpu_device *adev, struct amdgpu_iv_entry *entry, + bool retry_fault); + #else static inline int kgd2kfd_init(void) { @@ -518,5 +521,12 @@ static inline bool kgd2kfd_compute_active(struct kfd_dev *kfd, uint32_t node_id) { return false; } + +static inline bool kgd2kfd_vmfault_fast_path(struct amdgpu_device *adev, struct amdgpu_iv_entry *entry, + bool retry_fault) +{ + return false; +} + #endif #endif /* AMDGPU_AMDKFD_H_INCLUDED */ diff --git a/drivers/gpu/drm/amd/amdgpu/gmc_v9_0.c b/drivers/gpu/drm/amd/amdgpu/gmc_v9_0.c index 48f1b9cf1f88..291549765c38 100644 --- a/drivers/gpu/drm/amd/amdgpu/gmc_v9_0.c +++ b/drivers/gpu/drm/amd/amdgpu/gmc_v9_0.c @@ -623,6 +623,9 @@ static int gmc_v9_0_process_interrupt(struct amdgpu_device *adev, } } + if (kgd2kfd_vmfault_fast_path(adev, entry, retry_fault)) + return 1; + if (!printk_ratelimit()) return 0; |