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