1Where:		/sys/bus/event_source/devices/<dev>/format
 2Date:		January 2012
 3Kernel Version: 3.3
 4Contact:	Jiri Olsa <jolsa@redhat.com>
 5Description:
 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
12		Example: 'config1:1,6-10,44'
13		Defines contents of attribute that occupies bits 1,6-10,44 of
14		perf_event_attr::config1.