linux-kernel - Re: LTS perf unwind fix

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Message-ID: <45b140543ccb85ab184ed17befca4a9e64661051.camel@nokia.com>
Date:   Wed, 26 May 2021 07:21:15 +0000
From:   "Rantala, Tommi T. (Nokia - FI/Espoo)" <tommi.t.rantala@...ia.com>
To:     "gregkh@...uxfoundation.org" <gregkh@...uxfoundation.org>
CC:     "stable@...r.kernel.org" <stable@...r.kernel.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "jan.kratochvil@...hat.com" <jan.kratochvil@...hat.com>
Subject: Re: LTS perf unwind fix

2021-05-25 15:06 +0200, gregkh@...uxfoundation.org:
> On Tue, May 25, 2021 at 12:41:15PM +0000, Rantala, Tommi T. (Nokia -
> FI/Espoo) wrote:
> > Can you please cherry-pick this to LTS:
> > 
> > commit bf53fc6b5f415cddc7118091cb8fd6a211b2320d
> > Author: Jan Kratochvil <jan.kratochvil@...hat.com>
> > Date:   Fri Dec 4 09:17:02 2020 -0300
> > 
> >     perf unwind: Fix separate debug info files when using elfutils'
> > libdw's unwinder
> 
> What exact kernel(s) do you want it backported to?

5.4.y please, tested Jan's and Dave's patches with it, and they cure
some broken backtraces.


  commit 4e1481445407b86a483616c4542ffdc810efb680
  Author: Dave Rigby <d.rigby@...com>
  Date:   Thu Feb 18 16:56:54 2021 +0000

    perf unwind: Set userdata for all __report_module() paths