[PATCH AUTOSEL 4.19 08/15] drm/msm: Ratelimit invalid-fence message

From: Sasha Levin
Date: Mon Mar 29 2021 - 18:34:36 EST


From: Rob Clark <robdclark@xxxxxxxxxxxx>

[ 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 <robdclark@xxxxxxxxxxxx>
Reviewed-by: Douglas Anderson <dianders@xxxxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
---
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 349c12f670eb..6c11be79574e 100644
--- a/drivers/gpu/drm/msm/msm_fence.c
+++ b/drivers/gpu/drm/msm/msm_fence.c
@@ -56,7 +56,7 @@ 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