From: "Randy.Dunlap" <rdunlap@xenotime.net>
To: lkml <linux-kernel@vger.kernel.org>
Cc: akpm <akpm@osdl.org>
Subject: [PATCH] doc: make doc. for maxcpus= more visible
Date: Fri, 20 Jan 2006 20:07:05 -0800 [thread overview]
Message-ID: <20060120200705.798e4712.rdunlap@xenotime.net> (raw)
From: Randy Dunlap <rdunlap@xenotime.net>
Some people are confused about maxcpus=1 and maxcpus=0,
so put the documentation text from init/main.c into
Documentation/kernel-parameters.txt also.
Signed-off-by: Randy Dunlap <rdunlap@xenotime.net>
---
Documentation/kernel-parameters.txt | 9 ++++++++-
1 files changed, 8 insertions(+), 1 deletion(-)
--- linux-2616-rc1-secur.orig/Documentation/kernel-parameters.txt
+++ linux-2616-rc1-secur/Documentation/kernel-parameters.txt
@@ -801,7 +801,14 @@ running once the system is up.
Format: <1-256>
maxcpus= [SMP] Maximum number of processors that an SMP kernel
- should make use of
+ should make use of.
+ Using "nosmp" or "maxcpus=0" will disable SMP
+ entirely (the MPS table probe still happens, though).
+ A command-line option of "maxcpus=<NUM>", where <NUM>
+ is an integer greater than 0, limits the maximum number
+ of CPUs activated in SMP mode to <NUM>.
+ Using "maxcpus=1" on an SMP kernel is the trivial
+ case of an SMP kernel with only one CPU.
max_addr=[KMG] [KNL,BOOT,ia64] All physical memory greater than or
equal to this physical address is ignored.
---
reply other threads:[~2006-01-21 4:07 UTC|newest]
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