Commit 3dfb4c1b authored by Zhou Wenjian's avatar Zhou Wenjian Committed by Jonathan Corbet
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Documentation: kdump: Remind user of nr_cpus 



nr_cpus can help to save memory. So we should remind user of it.

Signed-off-by: default avatarZhou Wenjian <zhouwj-fnst@cn.fujitsu.com>
Acked-by: default avatarBaoquan He <bhe@redhat.com>
Acked-by: default avatarXunlei Pang <xpang@redhat.com>
Signed-off-by: default avatarJonathan Corbet <corbet@lwn.net>
parent be6c3095

Documentation/kdump/kdump.txt

+2 −0
Original line number Diff line number Diff line
@@ -393,6 +393,8 @@ 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.

  Note, though maxcpus always works, you had better replace it with

  nr_cpus to save memory if supported by the current ARCH, such as x86.



* 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