Re: [PATCH 1/2] Documentation: kdump: update maxcpus to nr_cpus

Baoquan He
2016-07-30T02:20:14Z

On 07/29/16 at 11:23am, Zhou Wenjian wrote:
> Parameter nr_cpus is used to bring up a SMP dump-capture kernel,
> instead of the old parameter maxcpus. This commit update it in
> Documentation/kdump/kdump.txt.
>
> Signed-off-by: Zhou Wenjian <zhouwj-fnst@cn.fujitsu.com>
> ---
> Documentation/kdump/kdump.txt | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/Documentation/kdump/kdump.txt b/Documentation/kdump/kdump.txt
> index 88ff63d..9a77247 100644
> --- a/Documentation/kdump/kdump.txt
> +++ b/Documentation/kdump/kdump.txt
> @@ -392,7 +392,7 @@ Notes on loading the dump-capture kernel:
>
> * We generally don' have to bring up a SMP kernel just to capture the
> dump. Hence generally it is useful either to build a UP dump-capture
> - kernel or specify maxcpus=1 option while loading dump-capture kernel.
> + kernel or specify nr_cpus=1 option while loading dump-capture kernel.

IIRC, ARCHes like ppc don't have nr_cpus yet, maxpcus is necessary. So
either you explicitly tell which can use nr_cpus and which can only use
maxcpus option, or drop this patch for now.

>
> * For s390x there are two kdump modes: If a ELF header is specified with
> the elfcorehdr= kernel parameter, it is used by the kdump kernel as it
> --
> 1.8.3.1
>
>
>