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SubjectRe: perf documentation: update format and events ABI files
On Mon, Jul 15, 2013 at 05:04:50PM -0400, Vince Weaver wrote:

SNIP

> diff --git a/Documentation/ABI/testing/sysfs-bus-event_source-devices-events b/Documentation/ABI/testing/sysfs-bus-event_source-devices-events
> index 3c1cc24..43aae08 100644
> --- a/Documentation/ABI/testing/sysfs-bus-event_source-devices-events
> +++ b/Documentation/ABI/testing/sysfs-bus-event_source-devices-events
> @@ -1,30 +1,51 @@
> -What: /sys/devices/cpu/events/
> +What: /sys/bus/event_source/devices/<dev>/events
> +
> +Date: 2013/01/08
> +
> +Contact: Linux kernel mailing list <linux-kernel@vger.kernel.org>
> +
> +Description: Generic performance monitoring events
> +
> + A collection of performance monitoring events that are
> + supported by the PMU (performance monitoring unit)
> + specified by "<dev>". These events can be monitored
> + using the 'perf(1)' tool.
> +
> + The contents of each file is a list of attribute names
> + (as found in the corresponding
> + /sys/bus/event_source/devices/<dev>/format
> + file) separated by commas. Each entry has
> + an optional value (either hex or decimal). If no
> + value is specified than it is assumed to be a single-bit
> + field with a value of 1.
> +
> + An example of what you might find:
> + event=0x2,inv,ldlat=3
> +
> +
> +What: /sys/devices/cpu/events/branch-instructions
> /sys/devices/cpu/events/branch-misses
> - /sys/devices/cpu/events/cache-references
> + /sys/devices/cpu/events/bus-cycles
> /sys/devices/cpu/events/cache-misses
> - /sys/devices/cpu/events/stalled-cycles-frontend
> - /sys/devices/cpu/events/branch-instructions
> - /sys/devices/cpu/events/stalled-cycles-backend
> - /sys/devices/cpu/events/instructions
> + /sys/devices/cpu/events/cache-references
> /sys/devices/cpu/events/cpu-cycles

missing:
/sys/devices/cpu/events/ref-cycles

> + /sys/devices/cpu/events/instructions
> + /sys/devices/cpu/events/stalled-cycles-backend
> + /sys/devices/cpu/events/stalled-cycles-frontend

SNIP

>
> What: /sys/devices/cpu/events/PM_1PLUS_PPC_CMPL
> diff --git a/Documentation/ABI/testing/sysfs-bus-event_source-devices-format b/Documentation/ABI/testing/sysfs-bus-event_source-devices-format
> index 77f47ff..4f7ee5e 100644
> --- a/Documentation/ABI/testing/sysfs-bus-event_source-devices-format
> +++ b/Documentation/ABI/testing/sysfs-bus-event_source-devices-format
> @@ -15,6 +15,12 @@ Description:
> attr2 = 'config:0-7'
> attr3 = 'config:12-35'
>
> - Example: 'config1:1,6-10,44'
> + Example: event = 'config1:1,6-10,44'
> Defines contents of attribute that occupies bits 1,6-10,44 of
> perf_event_attr::config1.
> +
> + In this example, the events file would have the value

nit, whitespace at the end of the above line

> + event=0x7f
> + to set all of the specified bits (they will be split up).
> + You would not use 0x10000007c2 (which is what the bits
> + actually passed into config1 would look like).

thanks,
jirka


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