linux-kernel - Re: [PATCH v3 00/27] function_graph: Allow multiple users for function graph tracing

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Date: Tue, 4 Jun 2024 12:31:24 -0400
From: Steven Rostedt <rostedt@...dmis.org>
To: Mark Rutland <mark.rutland@....com>
Cc: Masami Hiramatsu <mhiramat@...nel.org>, linux-kernel@...r.kernel.org,
 linux-trace-kernel@...r.kernel.org, Mathieu Desnoyers
 <mathieu.desnoyers@...icios.com>, Andrew Morton
 <akpm@...ux-foundation.org>, Alexei Starovoitov
 <alexei.starovoitov@...il.com>, Florent Revest <revest@...omium.org>,
 Martin KaFai Lau <martin.lau@...ux.dev>, bpf <bpf@...r.kernel.org>, Sven
 Schnelle <svens@...ux.ibm.com>, Alexei Starovoitov <ast@...nel.org>, Jiri
 Olsa <jolsa@...nel.org>, Arnaldo Carvalho de Melo <acme@...nel.org>, Daniel
 Borkmann <daniel@...earbox.net>, Alan Maguire <alan.maguire@...cle.com>,
 Peter Zijlstra <peterz@...radead.org>, Thomas Gleixner
 <tglx@...utronix.de>, Guo Ren <guoren@...nel.org>
Subject: Re: [PATCH v3 00/27] function_graph: Allow multiple users for
 function graph tracing

On Tue, 4 Jun 2024 15:44:40 +0100
Mark Rutland <mark.rutland@....com> wrote:

> Hi Steve, Masami,
> 
> On Tue, Jun 04, 2024 at 08:18:50AM -0400, Steven Rostedt wrote:
> > 
> > Masami,
> > 
> > This series passed all my tests, are you comfortable with me pushing
> > them to linux-next?  
> 
> As a heads-up (and not to block pushing this into next), I just gave
> this a spin on arm64 atop v6.10-rc2, and running the selftests I see:
> 
> 	ftrace - function pid filters
> 	(instance)  ftrace - function pid filters
> 
> ... both go from [PASS] to [FAIL].
> 
> Everything else looks good -- I'll go dig into why that's happening.
> 
> It's possible that's just something odd with the filesystem I'm using
> (e.g. the wnership test failed because this lacks 'stat').

Thanks for the update. I could be something I missed in patch 13 that had
to put back the pid code.

There may have been something arch specific that I'm unaware about. I'll
look at that deeper.

-- Steve