linux-kernel - Re: [RFC PATCH 0/4] perf: Correlating user process data to samples

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Date: Thu, 18 Apr 2024 15:53:14 -0700
From: Josh Poimboeuf <jpoimboe@...nel.org>
To: Steven Rostedt <rostedt@...dmis.org>
Cc: Peter Zijlstra <peterz@...radead.org>,
	Beau Belgrave <beaub@...ux.microsoft.com>, mingo@...hat.com,
	acme@...nel.org, namhyung@...nel.org, mhiramat@...nel.org,
	mathieu.desnoyers@...icios.com, linux-kernel@...r.kernel.org,
	linux-trace-kernel@...r.kernel.org,
	linux-perf-users@...r.kernel.org, mark.rutland@....com,
	alexander.shishkin@...ux.intel.com, jolsa@...nel.org,
	irogers@...gle.com, adrian.hunter@...el.com, primiano@...gle.com,
	aahringo@...hat.com, dcook@...ux.microsoft.com,
	Josh Poimboeuf <jpoimboe@...hat.com>
Subject: Re: [RFC PATCH 0/4] perf: Correlating user process data to samples

On Sat, Apr 13, 2024 at 08:48:57AM -0400, Steven Rostedt wrote:
> On Sat, 13 Apr 2024 12:53:38 +0200
> Peter Zijlstra <peterz@...radead.org> wrote:
> 
> > On Fri, Apr 12, 2024 at 09:37:24AM -0700, Beau Belgrave wrote:
> > 
> > > > Anyway, since we typically run stuff from NMI context, accessing user
> > > > data is 'interesting'. As such I would really like to make this work
> > > > depend on the call-graph rework that pushes all the user access bits
> > > > into return-to-user.  
> > > 
> > > Cool, I assume that's the SFRAME work? Are there pointers to work I
> > > could look at and think about what a rebase looks like? Or do you have
> > > someone in mind I should work with for this?  
> > 
> > I've been offline for a little while and still need to catch up with
> > things myself.
> > 
> > Josh was working on that when I dropped off IIRC, I'm not entirely sure
> > where things are at currently (and there is no way I can ever hope to
> > process the backlog).
> > 
> > Anybody know where we are with that?
> 
> It's still very much on my RADAR, but with layoffs and such, my
> priorities have unfortunately changed. I'm hoping to start helping out
> in the near future though (in a month or two).
> 
> Josh was working on it, but I think he got pulled off onto other
> priorities too :-p

Yeah, this is still a priority for me and I hope to get back to it over
the next few weeks (crosses fingers).

-- 
Josh