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| author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-05-06 01:02:30 +0000 |
|---|---|---|
| committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-05-06 01:02:30 +0000 |
| commit | 76cb841cb886eef6b3bee341a2266c76578724ad (patch) | |
| tree | f5892e5ba6cc11949952a6ce4ecbe6d516d6ce58 /Documentation/ABI/testing/sysfs-bus-event_source-devices-format | |
| parent | Initial commit. (diff) | |
| download | linux-upstream.tar.xz linux-upstream.zip | |
Adding upstream version 4.19.249.upstream/4.19.249upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to '')
| -rw-r--r-- | Documentation/ABI/testing/sysfs-bus-event_source-devices-format | 20 |
1 files changed, 20 insertions, 0 deletions
diff --git a/Documentation/ABI/testing/sysfs-bus-event_source-devices-format b/Documentation/ABI/testing/sysfs-bus-event_source-devices-format new file mode 100644 index 000000000..77f47ff5e --- /dev/null +++ b/Documentation/ABI/testing/sysfs-bus-event_source-devices-format @@ -0,0 +1,20 @@ +Where: /sys/bus/event_source/devices/<dev>/format +Date: January 2012 +Kernel Version: 3.3 +Contact: Jiri Olsa <jolsa@redhat.com> +Description: + Attribute group to describe the magic bits that go into + perf_event_attr::config[012] for a particular pmu. + Each attribute of this group defines the 'hardware' bitmask + we want to export, so that userspace can deal with sane + name/value pairs. + + Userspace must be prepared for the possibility that attributes + define overlapping bit ranges. For example: + attr1 = 'config:0-23' + attr2 = 'config:0-7' + attr3 = 'config:12-35' + + Example: 'config1:1,6-10,44' + Defines contents of attribute that occupies bits 1,6-10,44 of + perf_event_attr::config1. |