1 What: /sys/bus/event_source/devices/dmar*/format 2 Date: Jan 2023 3 KernelVersion: 6.3 4 Contact: Kan Liang <kan.liang@linux.intel.com> 5 Description: Read-only. Attribute group to describe the magic bits 6 that go into perf_event_attr.config, 7 perf_event_attr.config1 or perf_event_attr.config2 for 8 the IOMMU pmu. (See also 9 ABI/testing/sysfs-bus-event_source-devices-format). 10 11 Each attribute in this group defines a bit range in 12 perf_event_attr.config, perf_event_attr.config1, 13 or perf_event_attr.config2. All supported attributes 14 are listed below (See the VT-d Spec 4.0 for possible 15 attribute values):: 16 17 event = "config:0-27" - event ID 18 event_group = "config:28-31" - event group ID 19 20 filter_requester_en = "config1:0" - Enable Requester ID filter 21 filter_domain_en = "config1:1" - Enable Domain ID filter 22 filter_pasid_en = "config1:2" - Enable PASID filter 23 filter_ats_en = "config1:3" - Enable Address Type filter 24 filter_page_table_en= "config1:4" - Enable Page Table Level filter 25 filter_requester_id = "config1:16-31" - Requester ID filter 26 filter_domain = "config1:32-47" - Domain ID filter 27 filter_pasid = "config2:0-21" - PASID filter 28 filter_ats = "config2:24-28" - Address Type filter 29 filter_page_table = "config2:32-36" - Page Table Level filter 30 31 What: /sys/bus/event_source/devices/dmar*/cpumask 32 Date: Jan 2023 33 KernelVersion: 6.3 34 Contact: Kan Liang <kan.liang@linux.intel.com> 35 Description: Read-only. This file always returns the CPU to which the 36 IOMMU pmu is bound for access to all IOMMU pmu performance 37 monitoring events.
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