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cpusets: Remove/update outdated comments

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cpuset_track_online_cpus() is no longer present. So remove the
outdated comment and replace it with reference to cpuset_update_active_cpus()
which is its equivalent.

Also, we don't lack memory hot-unplug anymore. And David Rientjes pointed
out how it is dealt with. So update that comment as well.

Signed-off-by: Srivatsa S. Bhat <srivatsa.bhat@linux.vnet.ibm.com>
Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Link: http://lkml.kernel.org/r/20120524141700.3692.98192.stgit@srivatsabhat.in.ibm.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
This commit is contained in:
Srivatsa S. Bhat 2012-05-24 19:47:03 +05:30 committed by Ingo Molnar
parent 7ddf96b02f
commit a1cd2b13f7
1 changed files with 3 additions and 4 deletions
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7
kernel/cpuset.c
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@ -2034,9 +2034,8 @@ static struct cpuset *cpuset_next(struct list_head *queue)
* before dropping down to the next. It always processes a node before
* any of its children.
*
* For now, since we lack memory hot unplug, we'll never see a cpuset
* that has tasks along with an empty 'mems'. But if we did see such
* a cpuset, we'd handle it just like we do if its 'cpus' was empty.
* In the case of memory hot-unplug, it will remove nodes from N_HIGH_MEMORY
* if all present pages from a node are offlined.
*/
static void
scan_cpusets_upon_hotplug(struct cpuset *root, enum hotplug_event event)
@ -2137,7 +2136,7 @@ void cpuset_update_active_cpus(bool cpu_online)
/*
* Keep top_cpuset.mems_allowed tracking node_states[N_HIGH_MEMORY].
* Call this routine anytime after node_states[N_HIGH_MEMORY] changes.
* See also the previous routine cpuset_track_online_cpus().
* See cpuset_update_active_cpus() for CPU hotplug handling.
*/
static int cpuset_track_online_nodes(struct notifier_block *self,
unsigned long action, void *arg)