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Commit 59b4a2d7 authored by Prakash Gupta's avatar Prakash Gupta
Browse files

iommu: arm-smmu: ratelimit context fault verification 



Frequent context faults can cause excessive logging issue. Many of
arm_smmu_context_fault() traces are ratelimited, it makes sense to
verify_fault only when we can log the output which is ratelimited. Bring
arm_smmu_verify_fault() call under ratelimit.

Change-Id: Id4afafe8c6d381ca945a34bd12a4498cd695d758
Signed-off-by: default avatarPrakash Gupta <guptap@codeaurora.org>
parent 17eb0120

drivers/iommu/arm-smmu.c

+4 −2
Original line number Diff line number Diff line
@@ -1493,9 +1493,11 @@ static irqreturn_t arm_smmu_context_fault(int irq, void *dev) 
		ret = IRQ_HANDLED;

		resume = RESUME_TERMINATE;

	} else {

		phys_addr_t phys_atos = arm_smmu_verify_fault(domain, iova,

							      fsr);

		if (__ratelimit(&_rs)) {

			phys_addr_t phys_atos = arm_smmu_verify_fault(domain,

								      iova,

								      fsr);



			dev_err(smmu->dev,

				"Unhandled context fault: iova=0x%08lx, cb=%d, fsr=0x%x, fsynr0=0x%x, fsynr1=0x%x\n",

				iova, cfg->cbndx, fsr, fsynr0, fsynr1);