linux-kernel - Re: [PATCH v2 4/5] perf: kretprobes: offset from reloc

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Message-Id: <20170225022917.cfb45d0ea41c22fcb5d61ebb@kernel.org>
Date:   Sat, 25 Feb 2017 02:29:17 +0900
From:   Masami Hiramatsu <mhiramat@...nel.org>
To:     "Naveen N. Rao" <naveen.n.rao@...ux.vnet.ibm.com>
Cc:     Ananth N Mavinakayanahalli <ananth@...ux.vnet.ibm.com>,
        Ingo Molnar <mingo@...hat.com>,
        Michael Ellerman <mpe@...erman.id.au>,
        Arnaldo Carvalho de Melo <acme@...nel.org>,
        Steven Rostedt <rostedt@...dmis.org>,
        linux-kernel@...r.kernel.org, linuxppc-dev@...ts.ozlabs.org
Subject: Re: [PATCH v2 4/5] perf: kretprobes: offset from reloc_sym if
 kernel supports it

On Fri, 24 Feb 2017 00:46:08 +0530
"Naveen N. Rao" <naveen.n.rao@...ux.vnet.ibm.com> wrote:

> On 2017/02/23 06:10PM, Masami Hiramatsu wrote:
> > On Wed, 22 Feb 2017 19:23:40 +0530
> > "Naveen N. Rao" <naveen.n.rao@...ux.vnet.ibm.com> wrote:
> > 
> > > We indicate support for accepting sym+offset with kretprobes through a
> > > line in ftrace README. Parse the same to identify support and choose the
> > > appropriate format for kprobe_events.
> > > 
> > > Signed-off-by: Naveen N. Rao <naveen.n.rao@...ux.vnet.ibm.com>
> > > ---
> > >  tools/perf/util/probe-event.c | 47 ++++++++++++++++++++++++++++++++++++-------
> > >  tools/perf/util/probe-event.h |  2 ++
> > >  2 files changed, 42 insertions(+), 7 deletions(-)
> > > 
> 
> [snip]
> 
> > 
> > Could you reuse (refactoring) probe_type_is_available() in probe-file.c to share
> > opening README file?
> 
> Done. I've sent patches to do that, please review.

OK.

> 
> > 
> > Others looks good to me :)
> 
> Thanks. I hope that's an Ack for this patchset?

OK, for 1/5, 2/5, 3/5, and 5/5;

Acked-by: Masami Hiramatsu <mhiramat@...nel.org>

And could you make v4 series including all patches? (Not only updates)

> 
> If so, and if Ingo/Michael agree, would it be ok to take the kernel bits 
> through the powerpc tree like we did for kprobe_exceptions_notify() 
> cleanup?

If it is not urgent (yes, it seems) and since it changes arch independent
parts, I think this series should finally go through Ingo's tree.


Thank you,


-- 
Masami Hiramatsu <mhiramat@...nel.org>