On 8/9/2023 1:19 PM, Kukjin Kim wrote:
2023. 8. 8. 오전 12:08, Brian Masney <bmasney@xxxxxxxxxx> 작성:
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@xxxxxxxxxxx/
[2]
https://lore.kernel.org/lkml/CAL_JsqLO9yey2-4FcWsaGxijiS6hGL0SH9VoMuiyei-u9=Cv=w@xxxxxxxxxxxxxx/
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@xxxxxxxxxxx/
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@xxxxxxxxxxxxxx/
Brian
Hi all,
Sorry for the late response and thanks for the asking.
In Samsung side, we’re checking about that internally as well. I’d like to know whether the minidump upstreaming is considered to be used in other chipset or some logic of that can be used. In addition, if Samsung wants, own the way upstreaming can be acceptable. It doesn’t mean we have a plan at this moment though.
Thanks for the response @Kukjin
It is not something considered already instead it is what Qualcomm has
support for its SOC in the downstream and we want to upstream the linux
drivers and Minidump will need boot firmware support to be able to be
used by other SOC vendors.
So, the reason of seeking feedback on exactly the problem statement
to debug crash from field devices where complete ddr dump is not
feasible instead collect minimal information available to debug
crashes and also about if SOC vendors have any solution for this
issue which is common and upstream-able and can be leveraged.
So, if the problem statement is valid and now it is the time to
share and get conclusion on some common solution, Feel free to
check and comment on our minidump patches.
https://lore.kernel.org/lkml/10dd2ead-758a-89f0-cda4-70ae927269eb@xxxxxxxxxxx/
-Mukesh
Thanks,
Kukjin Kim <kgene(at)kernel.org>
