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

From: Brian Masney <bmasney@redhat.com>
To: Mukesh Ojha <quic_mojha@quicinc.com>
Cc: Krzysztof Kozlowski <krzk@kernel.org>,
	linux-samsung-soc@vger.kernel.org,
	linux-mediatek@lists.infradead.org,
	lkml <linux-kernel@vger.kernel.org>,
	Trilok Soni <quic_tsoni@quicinc.com>,
	"open list:ARM/QUALCOMM SUPPORT" <linux-arm-msm@vger.kernel.org>,
	linux-arm-kernel@lists.infradead.org,
	Alim Akhtar <alim.akhtar@samsung.com>,
	Kukjin Kim <kgene@kernel.org>,
	Vignesh Raghavendra <vigneshr@ti.com>, Nishanth Menon <nm@ti.com>,
	Matthias Brugger <matthias.bgg@gmail.com>
Subject: Re: Feedback on Qualcomm's minidump (debug) solution for end user device crash
Date: Mon, 7 Aug 2023 11:08:50 -0400	[thread overview]
Message-ID: <ZNEJAh0in/fjq6s9@brian-x1> (raw)
In-Reply-To: <81b15738-615d-a039-7bc3-22aa5b3a54bd@quicinc.com>

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/@Brian 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

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