sysfs-bus-event_source-devices-format 704 B

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  1. What: /sys/bus/event_source/devices/<dev>/format
  2. Date: January 2012
  3. KernelVersion: 3.3
  4. Contact: Jiri Olsa <jolsa@redhat.com>
  5. Description:
  6. Attribute group to describe the magic bits that go into
  7. perf_event_attr::config[012] for a particular pmu.
  8. Each attribute of this group defines the 'hardware' bitmask
  9. we want to export, so that userspace can deal with sane
  10. name/value pairs.
  11. Userspace must be prepared for the possibility that attributes
  12. define overlapping bit ranges. For example::
  13. attr1 = 'config:0-23'
  14. attr2 = 'config:0-7'
  15. attr3 = 'config:12-35'
  16. Example: 'config1:1,6-10,44'
  17. Defines contents of attribute that occupies bits 1,6-10,44 of
  18. perf_event_attr::config1.