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#1 2016-06-29 19:28:23

Horizon_Brave
Operating System: Linux-Nettrix
Registered: 2015-10-18
Posts: 1,473

Running List of Kernel Parameters?

Hey everyone. Does anyone have or know of a site that maintains a kernel by kernel list of what parameters each version supports?  For example, we're running ontop of kernel 3.16.xx  is there a site of the complete and comprehensive list of what 3.16 supports, then another for what 3.15 or other versions support?  I know of this:

https://www.kernel.org/doc/Documentatio … meters.txt

But it doesn't seem to have some parameters...


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#2 2016-06-29 20:11:51

Head_on_a_Stick
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Re: Running List of Kernel Parameters?


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#3 2016-06-30 18:14:22

Horizon_Brave
Operating System: Linux-Nettrix
Registered: 2015-10-18
Posts: 1,473

Re: Running List of Kernel Parameters?

If this is a complete list (it's the same list I provided in my original post btw)  then where are parameters such a nomodeset  to disable KMS?


"I have not failed, I have found 10,000 ways that will not work" -Edison

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#4 2016-06-30 18:47:27

Head_on_a_Stick
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Re: Running List of Kernel Parameters?

Horizon_Brave wrote:

it's the same list I provided in my original post

No, it isn't.

Your link was the list for the current stable kernel, my link was to the version control system that holds the lists for every kernel that has been released -- as you requested  angel

where are parameters such a nomodeset  to disable KMS?

I have no clue, sorry.


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#5 2016-06-30 20:57:11

Horizon_Brave
Operating System: Linux-Nettrix
Registered: 2015-10-18
Posts: 1,473

Re: Running List of Kernel Parameters?

Head_on_a_Stick wrote:

Your link was the list for the current stable kernel, my link was to the version control system that holds the lists for every kernel that has been released -- as you requested  angel .


My apologies HoaS! I just saw the format and assumed!  Anyway, this works for I'm assuming a very large amount of paramaters... plus I see at the very very bottom

TODO:

    Add more DRM drivers.

Maybe nomodeset will be added later..

And HoaS I have one question...I know if you look at /proc/cmdline, it shows you the boot kernel parameters, mine have the standard quiet, nosplash.... I'm going out on a limb here and thinking that those two parameters are NOT the only parameters in that huge list, that are actually used? Are those two parameters (quiet and nosplash) just tacked onto the grub boot loader and not compiled into the kernel, which is why they're added on boot?   How / Where can we find the total list of kernel parameters that are actually used on your system when booted?  Where are they located on the File system?

Last edited by Horizon_Brave (2016-06-30 20:58:12)


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#6 2016-06-30 21:01:26

Head_on_a_Stick
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Re: Running List of Kernel Parameters?

Horizon_Brave wrote:

How / Where can we find the total list of kernel parameters that are actually used on your system when booted?  Where are they located on the File system?

Kernel command line parameters (to give them their full name) are switches that can be passed to the kernel to modify the standard behaviour.

As such, there is no list of these parameters on your filesystem apart from in the bootloader configuration files.


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#7 2016-06-30 21:17:27

Horizon_Brave
Operating System: Linux-Nettrix
Registered: 2015-10-18
Posts: 1,473

Re: Running List of Kernel Parameters?

Head_on_a_Stick wrote:
Horizon_Brave wrote:

How / Where can we find the total list of kernel parameters that are actually used on your system when booted?  Where are they located on the File system?

Kernel command line parameters (to give them their full name) are switches that can be passed to the kernel to modify the standard behaviour.

As such, there is no list of these parameters on your filesystem apart from in the bootloader configuration files.

Ah, I see... so just to be sure though...those would definitely include more than just the nosplash and quiet right?   Most likely they're dispersed through /etc/grub.d/10_linux     and or   /etc/grub.d/00_header  ?


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#8 2016-07-01 06:18:09

Head_on_a_Stick
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Re: Running List of Kernel Parameters?

Horizon_Brave wrote:

those would definitely include more than just the nosplash and quiet right?

No.

`cat /proc/cmdline` will display *all* active kernel command line parameters, see proc(5).


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#9 2016-07-06 01:58:27

Horizon_Brave
Operating System: Linux-Nettrix
Registered: 2015-10-18
Posts: 1,473

Re: Running List of Kernel Parameters?

Head_on_a_Stick wrote:
Horizon_Brave wrote:

those would definitely include more than just the nosplash and quiet right?

No.

`cat /proc/cmdline` will display *all* active kernel command line parameters, see proc(5).


Wow..that is ...almost mind boggling...The list of kernel parameters is crazy long, but yet only two are used on boot..


"I have not failed, I have found 10,000 ways that will not work" -Edison

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#10 2016-07-06 06:48:50

Head_on_a_Stick
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Posts: 8,759
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Re: Running List of Kernel Parameters?

Horizon_Brave wrote:

The list of kernel parameters is crazy long, but yet only two are used changed from their stock settings on boot..

Fixed that for you wink

EDIT: kernel command line parameters can be considered as "tuning knobs" for variables in the kernel, easily accessible via a bootloader.

Last edited by Head_on_a_Stick (2016-07-06 06:50:17)


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