Re: [PATCH V2] kernel/hung_task.c: Introduce sysctl to print all traces when a hung task is detected

[Vlastimil Babka]

On 3/24/20 7:20 PM, Kees Cook wrote:
> On Tue, Mar 24, 2020 at 09:45:40AM -0300, Guilherme G. Piccoli wrote:
>> Thanks Randy and Vlastimil for the comments. I really liked your
>> approach Vlastimil, I agree that we have no reason to not have a generic
>> sysctl setting via cmdline mechanism - I'll rework this patch removing
>> the kernel parameter (same for other patch I just submitted).
> 
> I've been thinking we'll likely want to have a big patch series that
> removes all the old "duplicate" boot params and adds some kind of
> "alias" mechanism.
> 
> Vlastimil, have you happened to keep a list of other "redundant" boot
> params you've noticed in the kernel? I bet there are a lot. :)

Well, I found about 4 that mentioned sysctl in
Documentation/admin-guide/kernel-parameters.txt
I suspect there will be more, but won't be trivial to identify them.