Am 2023-07-19 um 17:22 schrieb Alex Sierra:
Set dynamic_svm_range_dump macro to avoid iterating over SVM lists
from svm_range_debug_dump when dynamic debug is disabled. Otherwise,
it could drop performance, specially with big number of SVM ranges.
Make sure both svm_range_set_attr and svm_range_debug_dump functions
are dynamically enabled to print svm_range_debug_dump debug traces.

Signed-off-by: Alex Sierra <alex.sie...@amd.com>
Tested-by: Alex Sierra <alex.sie...@amd.com>
Signed-off-by: Philip Yang <philip.y...@amd.com>
Signed-off-by: Felix Kuehling <felix.kuehl...@amd.com>

I don't think my name on a Signed-off-by is appropriate here. I didn't write the patch. And I'm not submitting it. However, the patch is

Reviewed-by: Felix Kuehling <felix.kuehl...@amd.com>


---
  drivers/gpu/drm/amd/amdkfd/kfd_svm.c | 4 +++-
  1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/amd/amdkfd/kfd_svm.c 
b/drivers/gpu/drm/amd/amdkfd/kfd_svm.c
index 479c4f66afa7..1b50eae051a4 100644
--- a/drivers/gpu/drm/amd/amdkfd/kfd_svm.c
+++ b/drivers/gpu/drm/amd/amdkfd/kfd_svm.c
@@ -46,6 +46,8 @@
   * page table is updated.
   */
  #define AMDGPU_SVM_RANGE_RETRY_FAULT_PENDING  (2UL * NSEC_PER_MSEC)
+#define dynamic_svm_range_dump(svms) \
+       _dynamic_func_call_no_desc("svm_range_dump", svm_range_debug_dump, svms)
/* Giant svm range split into smaller ranges based on this, it is decided using
   * minimum of all dGPU/APU 1/32 VRAM size, between 2MB to 1GB and alignment to
@@ -3563,7 +3565,7 @@ svm_range_set_attr(struct kfd_process *p, struct 
mm_struct *mm,
                        break;
        }
- svm_range_debug_dump(svms);
+       dynamic_svm_range_dump(svms);
mutex_unlock(&svms->lock);
        mmap_read_unlock(mm);

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