Re: [PATCH 2/2] drm/i915: Ratelimit debug log in vm_fault_ttm

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On 13/10/2022 09:40, Nirmoy Das wrote:
Test like i915_gem_mman_live_selftests/igt_mmap_migrate can cause
dmesg spamming. Use ratelimit api to reduce log rate.

References: https://gitlab.freedesktop.org/drm/intel/-/issues/7038
Cc: Matthew Auld <matthew.auld@xxxxxxxxx>
Signed-off-by: Nirmoy Das <nirmoy.das@xxxxxxxxx>
Reviewed-by: Matthew Auld <matthew.auld@xxxxxxxxx>


---
  drivers/gpu/drm/i915/gem/i915_gem_ttm.c | 5 +++--
  1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/drivers/gpu/drm/i915/gem/i915_gem_ttm.c b/drivers/gpu/drm/i915/gem/i915_gem_ttm.c
index d63f30efd631..6b60b99461e2 100644
--- a/drivers/gpu/drm/i915/gem/i915_gem_ttm.c
+++ b/drivers/gpu/drm/i915/gem/i915_gem_ttm.c
@@ -1080,8 +1080,9 @@ static vm_fault_t vm_fault_ttm(struct vm_fault *vmf)
  		}
if (err) {
-			drm_dbg(dev, "Unable to make resource CPU accessible(err = %pe)\n",
-				ERR_PTR(err));
+			drm_dbg_ratelimited(dev,
+					    "Unable to make resource CPU accessible(err = %pe)\n",
+					    ERR_PTR(err));
  			dma_resv_unlock(bo->base.resv);
  			ret = VM_FAULT_SIGBUS;
  			goto out_rpm;



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