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|---|---|
| From | Zhou Wenjian <zhouwj-fnst@cn.fujitsu.com> |
| Newsgroups | linux.kernel |
| Subject | [PATCH v6 1/2] Documentation: kdump: remind user of nr_cpus |
| Date | Mon, 15 Aug 2016 02:40:01 +0200 |
| Message-ID | <s6e6B-6RG-5@gated-at.bofh.it> (permalink) |
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| X-Original-Date | Mon, 15 Aug 2016 08:37:10 +0800 |
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| Xref | csiph.com linux.kernel:1462512 |
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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> --- Documentation/kdump/kdump.txt | 2 +++- 1 file changed, 2 insertions(+) diff --git a/Documentation/kdump/kdump.txt b/Documentation/kdump/kdump.txt index 88ff63d..96da2b7 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 should replace it by 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 -- 1.8.3.1
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[PATCH v6 0/2] update the doc of kdump Zhou Wenjian <zhouwj-fnst@cn.fujitsu.com> - 2016-08-15 02:40 +0200 [PATCH v6 1/2] Documentation: kdump: remind user of nr_cpus Zhou Wenjian <zhouwj-fnst@cn.fujitsu.com> - 2016-08-15 02:40 +0200 [PATCH v6 2/2] Documentation: kdump: add description of enable multi-cpus support Zhou Wenjian <zhouwj-fnst@cn.fujitsu.com> - 2016-08-15 02:40 +0200
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