[PATCH] sched_clock: add data pointer argument to read callback

[Russell King - ARM Linux]

On Fri, Oct 09, 2015 at 10:57:35PM +0100, Mans Rullgard wrote:
> This passes a data pointer specified in the sched_clock_register()
> call to the read callback allowing simpler implementations thereof.
> 
> In this patch, existing uses of this interface are simply updated
> with a null pointer.

This is a bad description.  It tells us what the patch is doing,
(which we can see by reading the patch) but not _why_.  Please include
information on why the change is necessary - describe what you are
trying to achieve.

I generally don't accept patches what add new stuff to the kernel with
no users of that new stuff - that's called experience, experience of
people who submit stuff like that, and then vanish leaving their junk
in the kernel without any users.  Please ensure that this gets a user
very quickly, or better still, submit this patch as part of a series
which makes use of it.

Also, copying soo many people is guaranteed to be silently dropped by
mailing lists.

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