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| author | Heiko Carstens <heiko.carstens@de.ibm.com> | 2006-02-17 13:52:47 -0800 |
|---|---|---|
| committer | Linus Torvalds <torvalds@g5.osdl.org> | 2006-02-17 13:59:27 -0800 |
| commit | 37a3302618a51520e2056494715ea6b4776dd8ab (patch) | |
| tree | 379fd117bb816fd012dd58ba9c900e20792a8ae3 /Documentation/cpu-hotplug.txt | |
| parent | 255acee706b333b79f593dd366f16e1f107cccc3 (diff) | |
| download | lwn-37a3302618a51520e2056494715ea6b4776dd8ab.tar.gz lwn-37a3302618a51520e2056494715ea6b4776dd8ab.zip | |
[PATCH] s390: possible_cpus parameter
Introduce possible_cpus command line option. Hard sets the number of bits set
in cpu_possible_map. Unlike the additional_cpus parameter this one guarantees
that num_possible_cpus() will stay constant even if the system gets rebooted
and a different number of cpus are present at startup.
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'Documentation/cpu-hotplug.txt')
| -rw-r--r-- | Documentation/cpu-hotplug.txt | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/Documentation/cpu-hotplug.txt b/Documentation/cpu-hotplug.txt index 4d3355da0e26..e71bc6cbbc5e 100644 --- a/Documentation/cpu-hotplug.txt +++ b/Documentation/cpu-hotplug.txt @@ -58,6 +58,12 @@ mark such hot-pluggable cpus as disabled entries, one could use this parameter "additional_cpus=x" to represent those cpus in the cpu_possible_map. +possible_cpus=n [s390 only] use this to set hotpluggable cpus. + This option sets possible_cpus bits in + cpu_possible_map. Thus keeping the numbers of bits set + constant even if the machine gets rebooted. + This option overrides additional_cpus. + CPU maps and such ----------------- [More on cpumaps and primitive to manipulate, please check |