linux-kernel - Re: [PATCH perf/core v9 00/16] perf-probe --cache and SDT support

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Message-ID: <20160531134048.GI2563@kernel.org>
Date:	Tue, 31 May 2016 10:40:48 -0300
From:	Arnaldo Carvalho de Melo <acme@...nel.org>
To:	Masami Hiramatsu <mhiramat@...nel.org>
Cc:	Namhyung Kim <namhyung@...nel.org>, linux-kernel@...r.kernel.org,
	Peter Zijlstra <peterz@...radead.org>,
	Ingo Molnar <mingo@...hat.com>,
	Hemant Kumar <hemant@...ux.vnet.ibm.com>,
	Ananth N Mavinakayanahalli <ananth@...ux.vnet.ibm.com>,
	Brendan Gregg <brendan.d.gregg@...il.com>
Subject: Re: [PATCH perf/core v9 00/16] perf-probe --cache and SDT support

Em Tue, May 31, 2016 at 06:01:28PM +0900, Masami Hiramatsu escreveu:
> On Mon, 30 May 2016 13:10:20 -0300
> Arnaldo Carvalho de Melo <acme@...nel.org> wrote:
> > Em Mon, May 30, 2016 at 12:54:58PM +0900, Namhyung Kim escreveu:
> > > On Sun, May 29, 2016 at 12:15:01AM +0900, Masami Hiramatsu wrote:
> > > > Here is the 9th version of the patchset for probe-cache and 
> > > > initial SDT support.

> > > > The previous version is here; https://lkml.org/lkml/2016/5/14/107

> > > > This version just fixes 2 points according to Hemant's comment,
> > > > and split out the filename__readable() patch.

> > > > Changes in v9:
> > > >   - [1/16,2/16] split out the filename__readable()
> > > >   - [7/16] Fix to show which event is deleted.
> > > >   - [12/16] Update list_usage to show sdt option.

> > > Thanks for doing this, I hope this gets merged soon.  The patch 4 and
> > > 14 look a bit larger and would be better to be splitted IMHO.  Other
> > > than that, all look good to me.

> > > Acked-by: Namhyung Kim <namhyung@...nel.org>
 
> > Agreed, please split both patches, I applied 1-3, please resend from 4
> > onwards.
 
> Hmm, for patch#4, it includes
>  A. Rename and Export build_id_cache__cachedir()	[14 LOC]
>  B. Add perf_probe_event__copy()	[73 LOC]
>  C. Add (or fix and reenable) synthesize_perf_probe_point() [38 LOC]
>  D. Introduce perf_cache interfaces (new/add/commit/delete) [320 LOC]
>  E. Add --cache option for perf-probe [15 LOC]
 
> And E depends on D, D depends on A,B and C. And of course without E,
> other parts are just a deadweight.(no other one call it, just exported)
> Should I split them all?

Please.

- Arnaldo