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authorHeiko Carstens <heiko.carstens@de.ibm.com>2008-08-12 15:08:40 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2008-08-12 16:07:28 -0700
commit3ee1062b4ee82a56294808a065b64f4bc6781a56 (patch)
tree6524b1df35cf4be3fd66d767a5b1a4c170be63d8
parent74768ed833344bb0f82b97cee46320a3d7f09ecd (diff)
cpu hotplug: s390 doesn't support additional_cpus anymore.
s390 doesn't support the additional_cpus kernel parameter anymore since a long time. So we better update the code and documentation to reflect that. Cc: Martin Schwidefsky <schwidefsky@de.ibm.com> Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
-rw-r--r--Documentation/cpu-hotplug.txt5
-rw-r--r--kernel/cpu.c2
2 files changed, 1 insertions, 6 deletions
diff --git a/Documentation/cpu-hotplug.txt b/Documentation/cpu-hotplug.txt
index ba0aacde94fb..94bbc27ddd4f 100644
--- a/Documentation/cpu-hotplug.txt
+++ b/Documentation/cpu-hotplug.txt
@@ -59,15 +59,10 @@ apicid values in those tables for disabled apics. In the event BIOS doesn't
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.
-s390 uses the number of cpus it detects at IPL time to also the number of bits
-in cpu_possible_map. If it is desired to add additional cpus at a later time
-the number should be specified using this option or the possible_cpus option.
-
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
-----------------
diff --git a/kernel/cpu.c b/kernel/cpu.c
index c977c339f559..f17e9854c246 100644
--- a/kernel/cpu.c
+++ b/kernel/cpu.c
@@ -369,7 +369,7 @@ int __cpuinit cpu_up(unsigned int cpu)
if (!cpu_isset(cpu, cpu_possible_map)) {
printk(KERN_ERR "can't online cpu %d because it is not "
"configured as may-hotadd at boot time\n", cpu);
-#if defined(CONFIG_IA64) || defined(CONFIG_X86_64) || defined(CONFIG_S390)
+#if defined(CONFIG_IA64) || defined(CONFIG_X86_64)
printk(KERN_ERR "please check additional_cpus= boot "
"parameter\n");
#endif

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