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kernel/cpuset.c: use register_hotmemory_notifier()

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Use the new interface, remove one ifdef.  No code size changes.

We could/should have been using __meminit/__meminitdata here but there's
now no point in doing that because all this code is elided at compile time.

Cc: Li Zefan <lizefan@huawei.com>
Cc: Tejun Heo <tj@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Andrew Morton 2013-04-29 15:08:08 -07:00 committed by Linus Torvalds
parent 3c743a7f7b
commit d8f10cb3d3
1 changed files with 7 additions and 5 deletions
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12
kernel/cpuset.c
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@ -2251,7 +2251,6 @@ void cpuset_update_active_cpus(bool cpu_online)
schedule_work(&cpuset_hotplug_work); schedule_work(&cpuset_hotplug_work);
} }
#ifdef CONFIG_MEMORY_HOTPLUG
/* /*
* Keep top_cpuset.mems_allowed tracking node_states[N_MEMORY]. * Keep top_cpuset.mems_allowed tracking node_states[N_MEMORY].
* Call this routine anytime after node_states[N_MEMORY] changes. * Call this routine anytime after node_states[N_MEMORY] changes.
@ -2263,20 +2262,23 @@ static int cpuset_track_online_nodes(struct notifier_block *self,
schedule_work(&cpuset_hotplug_work); schedule_work(&cpuset_hotplug_work);
return NOTIFY_OK; return NOTIFY_OK;
} }
#endif
static struct notifier_block cpuset_track_online_nodes_nb = {
.notifier_call = cpuset_track_online_nodes,
.priority = 10, /* ??! */
};
/** /**
* cpuset_init_smp - initialize cpus_allowed * cpuset_init_smp - initialize cpus_allowed
* *
* Description: Finish top cpuset after cpu, node maps are initialized * Description: Finish top cpuset after cpu, node maps are initialized
**/ */
void __init cpuset_init_smp(void) void __init cpuset_init_smp(void)
{ {
cpumask_copy(top_cpuset.cpus_allowed, cpu_active_mask); cpumask_copy(top_cpuset.cpus_allowed, cpu_active_mask);
top_cpuset.mems_allowed = node_states[N_MEMORY]; top_cpuset.mems_allowed = node_states[N_MEMORY];
hotplug_memory_notifier(cpuset_track_online_nodes, 10); register_hotmemory_notifier(&cpuset_track_online_nodes_nb);
cpuset_propagate_hotplug_wq = cpuset_propagate_hotplug_wq =
alloc_ordered_workqueue("cpuset_hotplug", 0); alloc_ordered_workqueue("cpuset_hotplug", 0);