Re: [PATCH] doc: Document the relax_domain_level kernel boot argument

From: Li Zefan
Date: Mon Jun 30 2008 - 02:30:07 EST


Paul Jackson wrote:
> From: Paul Jackson <pj@xxxxxxx>
>
> Document the kernel boot parameter: relax_domain_level=.
>
> Signed-off-by: Paul Jackson <pj@xxxxxxx>
>
> ---
> Documentation/cpusets.txt | 3 +++
> Documentation/kernel-parameters.txt | 4 ++++
> 2 files changed, 7 insertions(+)
>
> --- 2.6.26-rc5-mm3.orig/Documentation/cpusets.txt 2008-06-27 06:55:34.000000000 -0700
> +++ 2.6.26-rc5-mm3/Documentation/cpusets.txt 2008-06-29 21:49:53.984674621 -0700
> @@ -546,6 +546,9 @@ otherwise initial value -1 that indicate
> ( 4 : search nodes in a chunk of node [on NUMA system] )
> ( 5~ : search system wide [on NUMA system])
>
> +The system default is 0 (no search). The system default can be
> +changed using the relax_domain_level= boot parameter.
> +
> This file is per-cpuset and affect the sched domain where the cpuset
> belongs to. Therefore if the flag 'sched_load_balance' of a cpuset
> is disabled, then 'sched_relax_domain_level' have no effect since
> --- 2.6.26-rc5-mm3.orig/Documentation/kernel-parameters.txt 2008-06-27 06:28:26.000000000 -0700
> +++ 2.6.26-rc5-mm3/Documentation/kernel-parameters.txt 2008-06-29 21:51:10.477997208 -0700
> @@ -1732,6 +1732,10 @@ and is between 256 and 4096 characters.
> Format: <reboot_mode>[,<reboot_mode2>[,...]]
> See arch/*/kernel/reboot.c or arch/*/kernel/process.c
>
> + relax_domain_level=
> + [KNL, SMP] Set schedulers default relax_domain_level.
> + See Documentation/cpusets.txt.
> +

is [KNL,SMP] more consistent ?

and s/schedulers/scheduler's/

but maybe I'm wrong due to my English skill.

> reserve= [KNL,BUGS] Force the kernel to ignore some iomem area
>
> reservetop= [X86-32]
>

Reviewed-by: Li Zefan <lizf@xxxxxxxxxxxxxx>

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