Re: [Patch 0/6] statistics infrastructure

From: Andrew Morton
Date: Tue May 23 2006 - 17:39:36 EST

Martin Peschke <mp3@xxxxxxxxxx> wrote:
> Andrew Morton wrote:
> > Martin Peschke <mp3@xxxxxxxxxx> wrote:
> >> My patch series is a proposal for a generic implementation of statistics.
> >
> > This uses debugfs for the user interface, but the
> > per-task-delay-accounting-*.patch series from Balbir creates an extensible
> > netlink-based system for passing instrumentation results back to userspace.
> >
> > Can this code be converted to use those netlink interfaces, or is Balbir's
> > approach unsuitable, or hasn't it even been considered, or what?
> >
> Andrew,
> taskstats, Balbir'r approach, is too specific and doesn't work for me.
> It is by design limited to per-task data.

OK. They are pretty different things.

Balbir, do you see any sane way in which the APIs you've implemented can be
extended to cover this requirement?

> My statistics code is not limited to per-task statistics, but allows exploiters
> to have data been accumulated and been shown for whatever entity they need to,
> may it be for tasks, for SCSI disks, per adapter, per queue, per interface,
> for a device driver, etc.


> If you want me to change my code to use netlink anyway, I might be able to
> implement my own genetlink family. I haven't look at the details of that yet.

Well, a debugfs interface _should_ be OK. If not, why do we need debugfs?

Ho hum, hard. Please send the patches again, let's take a closer look, see
if we can move them forward a bit.

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