Thread (19 messages) 19 messages, 1 author, 2021-03-29
STALE1918d REVIEWED: 4 (4M)

[PATCH AUTOSEL 5.4 11/19] drm/msm: Ratelimit invalid-fence message

From: Sasha Levin <sashal@kernel.org>
Date: 2021-03-29 22:28:47
Also in: dri-devel, linux-arm-msm, lkml
Subsystem: drm driver for qualcomm display hardware, drm drivers, the rest · Maintainers: Rob Clark, Dmitry Baryshkov, David Airlie, Simona Vetter, Linus Torvalds

From: Rob Clark <redacted>

[ Upstream commit 7ad48d27a2846bfda29214fb454d001c3e02b9e7 ]

We have seen a couple cases where low memory situations cause something
bad to happen, followed by a flood of these messages obscuring the root
cause.  Lets ratelimit the dmesg spam so that next time it happens we
don't lose the kernel traces leading up to this.

Signed-off-by: Rob Clark <redacted>
Reviewed-by: Douglas Anderson <dianders@chromium.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/gpu/drm/msm/msm_fence.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/msm/msm_fence.c b/drivers/gpu/drm/msm/msm_fence.c
index ad2703698b05..cd59a5918038 100644
--- a/drivers/gpu/drm/msm/msm_fence.c
+++ b/drivers/gpu/drm/msm/msm_fence.c
@@ -45,7 +45,7 @@ int msm_wait_fence(struct msm_fence_context *fctx, uint32_t fence,
 	int ret;
 
 	if (fence > fctx->last_fence) {
-		DRM_ERROR("%s: waiting on invalid fence: %u (of %u)\n",
+		DRM_ERROR_RATELIMITED("%s: waiting on invalid fence: %u (of %u)\n",
 				fctx->name, fence, fctx->last_fence);
 		return -EINVAL;
 	}
-- 
2.30.1
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