linux-kernel - Re: Feedback on Qualcomm's minidump (debug) solution for end user device crash

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Date:   Mon, 7 Aug 2023 11:08:50 -0400
From:   Brian Masney <bmasney@...hat.com>
To:     Mukesh Ojha <quic_mojha@...cinc.com>
Cc:     Krzysztof Kozlowski <krzk@...nel.org>,
        linux-samsung-soc@...r.kernel.org,
        linux-mediatek@...ts.infradead.org,
        lkml <linux-kernel@...r.kernel.org>,
        Trilok Soni <quic_tsoni@...cinc.com>,
        "open list:ARM/QUALCOMM SUPPORT" <linux-arm-msm@...r.kernel.org>,
        linux-arm-kernel@...ts.infradead.org,
        Alim Akhtar <alim.akhtar@...sung.com>,
        Kukjin Kim <kgene@...nel.org>,
        Vignesh Raghavendra <vigneshr@...com>,
        Nishanth Menon <nm@...com>,
        Matthias Brugger <matthias.bgg@...il.com>
Subject: Re: Feedback on Qualcomm's minidump (debug) solution for end user
 device crash

On Mon, Aug 07, 2023 at 06:01:27PM +0530, Mukesh Ojha wrote:
> On 7/30/2023 5:14 PM, Krzysztof Kozlowski wrote:
> > On 24/07/2023 18:59, Brian Masney wrote:
> > > + linux-arm-kernel list
> > > 
> > > On Thu, Jul 20, 2023 at 08:32:24PM +0530, Mukesh Ojha wrote:
> > > > Hi Samsung/MTK/Any other SOC vendors,
> > > > 
> > > > This is to bring to your notice that, we (Qualcomm) are working on
> > > > upstreaming our minidump solution which is to address the problem of
> > > > debugging on field device crashes where collecting entire ddr dump
> > > > would not be feasible and collecting minimal data from the ddr would
> > > > help in debug direction or even help in root causing issue.
> > > > 
> > > > We have recently posted v4 version here [1]
> > > > 
> > > > Based on comments[2], community is more worried about, if each SOC
> > > > vendor come up with their own dumping method today or in future and
> > > > whether it can have a common solution to a similar problem faced by
> > > > other SOC vendor.
> > > > 
> > > > We wanted to take your feedback if you also encounter a similar problem
> > > > or maintain something similar solution in downstream which can be
> > > > upstreamed. This will help us in a way to have a common solution in
> > > > upstream.
> > > > 
> > > > [1]
> > > > https://lore.kernel.org/lkml/10dd2ead-758a-89f0-cda4-70ae927269eb@quicinc.com/
> > > > 
> > > > [2]
> > > > https://lore.kernel.org/lkml/CAL_JsqLO9yey2-4FcWsaGxijiS6hGL0SH9VoMuiyei-u9=Cv=w@mail.gmail.com/
> > > 
> > > Adding the main ARM list to solicit feedback from other silicon
> > > manufacturers.
> > > 
> > > The cover sheet on the v4 patch set is available at:
> > > https://lore.kernel.org/lkml/1687955688-20809-1-git-send-email-quic_mojha@quicinc.com/
> > 
> > I doubt anyone follows the lists, so at least Cc some maintainers.
> > 
> > +Cc Alim, Kukjin, Vignesh, Nishanth, Matthias.
> 
> Thanks @Krzysztof/@...an for extending the list.

Hi Mukesh,

Since no one has responded yet: I suspect your best bet to land the
minidump functionality upstream is to refactor it to use the pstore
functionality that Rob suggested:

https://lore.kernel.org/lkml/CAL_JsqK7MHR09U5h01=Gf1ZLeDVCgZdN-W1hQRH3AX+E94_uUg@mail.gmail.com/

Brian