mirrors/linux-stable
1
0
Fork 0
mirror of https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git synced 2024-10-14 12:37:32 +00:00
Code Issues Releases Wiki Activity

drm/msm: avoid flood of kernel logs on faults

Browse source 
87e956e9 changed the fault handler to return -ENOSYS, which causes the
iommu driver to print out a huge splat.  Which wouldn't be quite so bad
if nothing ever faulted.  But seems like some EXA composite operations
generate quite a lot of (seemingly harmless) faults.  That is probably a
userspace problem, but the huge increase in verbosity from iommu fault
dumps makes things kind of unusable.

We probably should actually log *some* message (not conditional on
drm.debug).  But ratelimit it.

Signed-off-by: Rob Clark <robdclark@gmail.com>
This commit is contained in:
Rob Clark 2014-08-09 09:07:25 -04:00
parent a284e9d14e
commit 6814dbf941
1 changed files with 2 additions and 2 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

4
drivers/gpu/drm/msm/msm_iommu.c
View file

@ -27,8 +27,8 @@ struct msm_iommu {
static int msm_fault_handler(struct iommu_domain *iommu, struct device *dev,
unsigned long iova, int flags, void *arg)
{
DBG("*** fault: iova=%08lx, flags=%d", iova, flags);
return -ENOSYS;
pr_warn_ratelimited("*** fault: iova=%08lx, flags=%d\n", iova, flags);
return 0;
}
static int msm_iommu_attach(struct msm_mmu *mmu, const char **names, int cnt)