[patch] perf_event_open.2 remove innaccurate paragaph describing attr.config

[patch] perf_event_open.2 remove innaccurate paragaph describing attr.config

[Vince Weaver]

Remove an inaccurate paragraph about values in the attr.config 
field.  This information was never true in any released kernel; 
it somehow snuck into the manpage because it is still described
this way in tools/perf/design.txt in the kernel source tree.

Signed-off-by: Vince Weaver <vincent.weaver-e7X0jjDqjFGHXe+LvDLADg@public.gmane.org>

diff --git a/man2/perf_event_open.2 b/man2/perf_event_open.2
index cccb880..003a8b2 100644
--- a/man2/perf_event_open.2
+++ b/man2/perf_event_open.2
@@ -352,12 +352,6 @@ fields are also taken into account in cases where 64 bits is not
 enough to fully specify the event.
 The encoding of these fields are event dependent.
 
-The most significant bit (bit 63) of
-.I config
-signifies CPU-specific (raw) counter configuration data;
-if the most significant bit is unset, the next 7 bits are an event
-type and the rest of the bits are the event identifier.

Re: [patch] perf_event_open.2 remove innaccurate paragaph describing attr.config

[Michael Kerrisk (man-pages)]

On 01/21/2015 04:04 AM, Vince Weaver wrote:
> 
> Remove an inaccurate paragraph about values in the attr.config 
> field.  This information was never true in any released kernel; 
> it somehow snuck into the manpage because it is still described
> this way in tools/perf/design.txt in the kernel source tree.

Thanks, Vince. Applied.

Cheers,

Michael


> Signed-off-by: Vince Weaver <vincent.weaver-e7X0jjDqjFGHXe+LvDLADg@public.gmane.org>
> 
> diff --git a/man2/perf_event_open.2 b/man2/perf_event_open.2
> index cccb880..003a8b2 100644
> --- a/man2/perf_event_open.2
> +++ b/man2/perf_event_open.2
> @@ -352,12 +352,6 @@ fields are also taken into account in cases where 64 bits is not
>  enough to fully specify the event.
>  The encoding of these fields are event dependent.
>  
> -The most significant bit (bit 63) of
> -.I config
> -signifies CPU-specific (raw) counter configuration data;
> -if the most significant bit is unset, the next 7 bits are an event
> -type and the rest of the bits are the event identifier.
> -
>  There are various ways to set the
>  .I config
>  field that are dependent on the value of the previously
> 


-- 
Michael Kerrisk
Linux man-pages maintainer; http://www.kernel.org/doc/man-pages/
Linux/UNIX System Programming Training: http://man7.org/training/
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