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[PATCH v10 RESEND 0/3] Documentation: Add description of enable multi-cpus support for kdump

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  [PATCH v10 RESEND 0/3] Documentation: Add description of enable multi-cpus support for kdump Baoquan He <bhe@redhat.com> - 2016-09-19 08:10 +0200
    [PATCH v10 RESEND 2/3] Documentation: kdump: Remind user of nr_cpus Baoquan He <bhe@redhat.com> - 2016-09-19 08:10 +0200
    Re: [PATCH v10 RESEND 0/3] Documentation: Add description of enable  multi-cpus support for kdump Jonathan Corbet <corbet@lwn.net> - 2016-09-21 02:10 +0200
      Re: [PATCH v10 RESEND 0/3] Documentation: Add description of enable  multi-cpus support for kdump Baoquan He <bhe@redhat.com> - 2016-09-21 03:30 +0200

#1486161 — [PATCH v10 RESEND 0/3] Documentation: Add description of enable multi-cpus support for kdump

This is v10 post. In this patchset patch 1/3 is added to give more details
about nr_cpus and maxcpus in kernel-parameters.txt. This is suggested by
Jonathan since the description of them is unclear so that people can't see
what's the exact difference between them. Otherwise no big further change
for 2/3 and 3/3 which comprise the old post.

Please access below link to check the previous changelog.
https://lkml.org/lkml/2016/8/17/646
Baoquan He (1):
  docs: kernel-parameter : Improve the description of nr_cpus and
    maxcpus

Zhou Wenjian (2):
  Documentation: kdump: remind user of nr_cpus
  Documentation: kdump: add description of enable multi-cpus support

 Documentation/kdump/kdump.txt       |  9 +++++++++
 Documentation/kernel-parameters.txt | 20 +++++++++++++-------
 2 files changed, 22 insertions(+), 7 deletions(-)

-- 
2.5.5

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#1486163 — [PATCH v10 RESEND 2/3] Documentation: kdump: Remind user of nr_cpus

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>
---
 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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#1487729 — Re: [PATCH v10 RESEND 0/3] Documentation: Add description of enable multi-cpus support for kdump

On Mon, 19 Sep 2016 13:59:46 +0800
Baoquan He <bhe@redhat.com> wrote:

> This is v10 post. In this patchset patch 1/3 is added to give more details
> about nr_cpus and maxcpus in kernel-parameters.txt. This is suggested by
> Jonathan since the description of them is unclear so that people can't see
> what's the exact difference between them. Otherwise no big further change
> for 2/3 and 3/3 which comprise the old post.

So somehow I'd applied 1/3 a while back, but not the other two.  All three
are in the docs tree now, thanks.

jon

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#1487753 — Re: [PATCH v10 RESEND 0/3] Documentation: Add description of enable multi-cpus support for kdump

On 09/20/16 at 06:03pm, Jonathan Corbet wrote:
> On Mon, 19 Sep 2016 13:59:46 +0800
> Baoquan He <bhe@redhat.com> wrote:
> 
> > This is v10 post. In this patchset patch 1/3 is added to give more details
> > about nr_cpus and maxcpus in kernel-parameters.txt. This is suggested by
> > Jonathan since the description of them is unclear so that people can't see
> > what's the exact difference between them. Otherwise no big further change
> > for 2/3 and 3/3 which comprise the old post.
> 
> So somehow I'd applied 1/3 a while back, but not the other two.  All three
> are in the docs tree now, thanks.

Thanks!

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