iommu/intel/perf.c

13 #include "iommu.h"
18 bool dmar_latency_enabled(struct intel_iommu *iommu, enum latency_type type)
20 	struct latency_statistic *lstat = iommu->perf_statistic;
25 int dmar_latency_enable(struct intel_iommu *iommu, enum latency_type type)
31 	if (dmar_latency_enabled(iommu, type))
35 	if (!iommu->perf_statistic) {
36 		iommu->perf_statistic = kcalloc(DMAR_LATENCY_NUM, sizeof(*lstat),
38 		if (!iommu->perf_statistic) {
44 	lstat = iommu->perf_statistic;
57 void dmar_latency_disable(struct intel_iommu *iommu, enum latency_type type)
59 	struct latency_statistic *lstat = iommu->perf_statistic;
62 	if (!dmar_latency_enabled(iommu, type))
70 void dmar_latency_update(struct intel_iommu *iommu, enum latency_type type, u64 latency)
72 	struct latency_statistic *lstat = iommu->perf_statistic;
76 	if (!dmar_latency_enabled(iommu, type))
116 int dmar_latency_snapshot(struct intel_iommu *iommu, char *str, size_t size)
118 	struct latency_statistic *lstat = iommu->perf_statistic;
130 		if (!dmar_latency_enabled(iommu, i))