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    <div class="moz-cite-prefix">On 2022-06-27 20:23, Alex Sierra wrote:<br>
    </div>
    <blockquote type="cite" cite="mid:20220628002347.3982-3-alex.sierra@amd.com">
      <pre class="moz-quote-pre" wrap="">This keeps track of kfd system mem used and kfd ttm mem used.</pre>
    </blockquote>
    <p>We could also dump vram used by checking topology_device_list per
      dev->vram_used, but it can add later if needed.</p>
    <p>Reviewed-by: Philip Yang <a class="moz-txt-link-rfc2396E" href="mailto:Philip.Yang@amd.com"><Philip.Yang@amd.com></a><br>
    </p>
    <blockquote type="cite" cite="mid:20220628002347.3982-3-alex.sierra@amd.com">
      <pre class="moz-quote-pre" wrap="">

Signed-off-by: Alex Sierra <a class="moz-txt-link-rfc2396E" href="mailto:alex.sierra@amd.com"><alex.sierra@amd.com></a>
---
 drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd.h    |  3 +++
 .../gpu/drm/amd/amdgpu/amdgpu_amdkfd_gpuvm.c  | 19 +++++++++++++++++++
 drivers/gpu/drm/amd/amdkfd/kfd_debugfs.c      |  2 ++
 3 files changed, 24 insertions(+)

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd.h b/drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd.h
index e6244182a3a4..53cdf7f00b3f 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd.h
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd.h
@@ -172,6 +172,9 @@ int amdgpu_queue_mask_bit_to_set_resource_bit(struct amdgpu_device *adev,
 struct amdgpu_amdkfd_fence *amdgpu_amdkfd_fence_create(u64 context,
                                struct mm_struct *mm,
                                struct svm_range_bo *svm_bo);
+#if defined(CONFIG_DEBUG_FS)
+int kfd_debugfs_kfd_mem_limits(struct seq_file *m, void *data);
+#endif
 #if IS_ENABLED(CONFIG_HSA_AMD)
 bool amdkfd_fence_check_mm(struct dma_fence *f, struct mm_struct *mm);
 struct amdgpu_amdkfd_fence *to_amdgpu_amdkfd_fence(struct dma_fence *f);
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd_gpuvm.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd_gpuvm.c
index 9719577ecc6d..c48557b683c6 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd_gpuvm.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd_gpuvm.c
@@ -2935,3 +2935,22 @@ bool amdgpu_amdkfd_bo_mapped_to_dev(struct amdgpu_device *adev, struct kgd_mem *
        }
        return false;
 }
+
+#if defined(CONFIG_DEBUG_FS)
+
+int kfd_debugfs_kfd_mem_limits(struct seq_file *m, void *data)
+{
+
+       spin_lock(&kfd_mem_limit.mem_limit_lock);
+       seq_printf(m, "System mem used %lldM out of %lluM\n",
+                 (kfd_mem_limit.system_mem_used >> 20),
+                 (kfd_mem_limit.max_system_mem_limit >> 20));
+       seq_printf(m, "TTM mem used %lldM out of %lluM\n",
+                 (kfd_mem_limit.ttm_mem_used >> 20),
+                 (kfd_mem_limit.max_ttm_mem_limit >> 20));
+       spin_unlock(&kfd_mem_limit.mem_limit_lock);
+
+       return 0;
+}
+
+#endif
diff --git a/drivers/gpu/drm/amd/amdkfd/kfd_debugfs.c b/drivers/gpu/drm/amd/amdkfd/kfd_debugfs.c
index 581c3a30fee1..ad5a40a685ac 100644
--- a/drivers/gpu/drm/amd/amdkfd/kfd_debugfs.c
+++ b/drivers/gpu/drm/amd/amdkfd/kfd_debugfs.c
@@ -101,6 +101,8 @@ void kfd_debugfs_init(void)
                            kfd_debugfs_rls_by_device, &kfd_debugfs_fops);
        debugfs_create_file("hang_hws", S_IFREG | 0200, debugfs_root,
                            kfd_debugfs_hang_hws_read, &kfd_debugfs_hang_hws_fops);
+       debugfs_create_file("mem_limit", S_IFREG | 0200, debugfs_root,
+                           kfd_debugfs_kfd_mem_limits, &kfd_debugfs_fops);
 }
 
 void kfd_debugfs_fini(void)
</pre>
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