docs: kernel-parameter: Improve the description of nr_cpus and maxcpus
authorBaoquan He <bhe@redhat.com>
Wed, 24 Aug 2016 05:06:45 +0000 (13:06 +0800)
committerJonathan Corbet <corbet@lwn.net>
Thu, 25 Aug 2016 19:14:53 +0000 (13:14 -0600)
commit7c142bfee6cbcd90b1847a708e22d461a1dfa38b
tree3f6340e470b1e264ce508a5d01f51c62e7521748
parent6d232c80158ae5a6fb497e0462d52c57c4459439
docs: kernel-parameter: Improve the description of nr_cpus and maxcpus

From the old description people still can't get what's the exact
difference between nr_cpus and maxcpus. Especially in kdump kernel
nr_cpus is always suggested if it's implemented in the ARCH. The
reason is nr_cpus is used to limit the max number of possible cpu
in system, the sum of already plugged cpus and hot plug cpus can't
exceed its value. However maxcpus is used to limit how many cpus
are allowed to be brought up during bootup.

Signed-off-by: Baoquan He <bhe@redhat.com>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Documentation/kernel-parameters.txt