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Groups > linux.kernel > #1486115
| From | Baoquan He <bhe@redhat.com> |
|---|---|
| Newsgroups | linux.kernel |
| Subject | [PATCH v10 2/3] Documentation: kdump: remind user of nr_cpus |
| Date | 2016-09-19 06:10 +0200 |
| Message-ID | <siY42-za-5@gated-at.bofh.it> (permalink) |
| References | <siY42-za-7@gated-at.bofh.it> |
| Organization | linux.* mail to news gateway |
From: Zhou Wenjian <zhouwj-fnst@cn.fujitsu.com> nr_cpus can help to save memory. So we should remind user of it. Signed-off-by: Zhou Wenjian <zhouwj-fnst@cn.fujitsu.com> Acked-by: Baoquan He <bhe@redhat.com> Acked-by: Xunlei Pang <xpang@redhat.com> Signed-off-by: Baoquan He <bhe@redhat.com> --- Documentation/kdump/kdump.txt | 2 ++ 1 file changed, 2 insertions(+) diff --git a/Documentation/kdump/kdump.txt b/Documentation/kdump/kdump.txt index 88ff63d..f7ef340 100644 --- a/Documentation/kdump/kdump.txt +++ b/Documentation/kdump/kdump.txt @@ -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 -- 2.5.5
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[PATCH v10 2/3] Documentation: kdump: remind user of nr_cpus Baoquan He <bhe@redhat.com> - 2016-09-19 06:10 +0200
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