Re: [PATCH v2 -tip 3/4] tracing: make a snapshot feature availablefrom userspace

[Hiraku Toyooka]

(12/15/2012 02:08 AM), Steven Rostedt wrote:
> On Fri, 2012-12-07 at 11:07 +0900, Hiraku Toyooka wrote:
> > Hi, Steven,
> >
> > (2012/11/30 23:17), Steven Rostedt wrote:
> > [snip]
> >   >
> >   > Actually, I would have:
> >   >
> >   >   status\input |     0      |     1      |    else    |
> >   >  --------------+------------+------------+------------+
> >   >  not allocated |(do nothing)| alloc+swap |   EINVAL   |
> >   >  --------------+------------+------------+------------+
> >   >    allocated   |    free    |   swap     |   clear    |
> >   >  --------------+------------+------------+------------+
> >   >
> >   > Perhaps we don't need to do the clear on swap, just let the trace
> >   > continue where it left off? But in case we should swap...
> >   >
> >
> > I think we don't need the clear on swap too.
> > I'll update my patches like this table.
> >
> >   > There's a fast way to clear the tracer. Look at what the wakeup tracer
> >   > does. We can make that generic. If you want, I can write that code up
> >   > too. Hmm, maybe I'll do that, as it will speed things up for
> >   > everyone :-)
> >   >
>
> BTW, any update on this? I really like to get this into 3.9.

I'm applying your review comment and rebasing now. So, I'll post the
updated patch series in a few days.

Thanks,
Hiraku Toyooka

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