linux 2.6.16.38 w/ vs2.0.3-rc1

[linux-2.6.git] / Documentation / cpu-hotplug.txt

diff --git a/Documentation/cpu-hotplug.txt b/Documentation/cpu-hotplug.txt
index bc107cb..57a09f9 100644 (file)
--- a/Documentation/cpu-hotplug.txt
+++ b/Documentation/cpu-hotplug.txt
@@ -97,13 +97,13 @@ at which time hotplug is disabled.
 
 You really dont need to manipulate any of the system cpu maps. They should
 be read-only for most use. When setting up per-cpu resources almost always use
-cpu_possible_map/for_each_possible_cpu() to iterate.
+cpu_possible_map/for_each_cpu() to iterate.
 
 Never use anything other than cpumask_t to represent bitmap of CPUs.
 
 #include <linux/cpumask.h>
 
-for_each_possible_cpu     - Iterate over cpu_possible_map
+for_each_cpu              - Iterate over cpu_possible_map
 for_each_online_cpu       - Iterate over cpu_online_map
 for_each_present_cpu      - Iterate over cpu_present_map
 for_each_cpu_mask(x,mask) - Iterate over some random collection of cpu mask.
@@ -251,24 +251,16 @@ A: This is what you would need in your kernel code to receive notifications.
                return NOTIFY_OK;
        }
 
-       static struct notifier_block __cpuinitdata foobar_cpu_notifer =
+       static struct notifier_block foobar_cpu_notifer =
        {
           .notifier_call = foobar_cpu_callback,
        };
 
-You need to call register_cpu_notifier() from your init function.
-Init functions could be of two types:
-1. early init (init function called when only the boot processor is online).
-2. late init (init function called _after_ all the CPUs are online).
 
-For the first case, you should add the following to your init function
+In your init function,
 
        register_cpu_notifier(&foobar_cpu_notifier);
 
-For the second case, you should add the following to your init function
-
-       register_hotcpu_notifier(&foobar_cpu_notifier);
-
 You can fail PREPARE notifiers if something doesn't work to prepare resources.
 This will stop the activity and send a following CANCELED event back.