From a1cd2b13f754b2c56fb87b8c4912c015f8f57c0c Mon Sep 17 00:00:00 2001 From: "Srivatsa S. Bhat" Date: Thu, 24 May 2012 19:47:03 +0530 Subject: [PATCH] cpusets: Remove/update outdated comments cpuset_track_online_cpus() is no longer present. So remove the outdated comment and replace it with reference to cpuset_update_active_cpus() which is its equivalent.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 Signed-off-by: Peter Zijlstra Cc: Linus Torvalds Cc: Andrew Morton Cc: Thomas Gleixner Link: http://lkml.kernel.org/r/20120524141700.3692.98192.stgit@srivatsabhat.in.ibm.com Signed-off-by: Ingo Molnar --- kernel/cpuset.c | 7 +++---- 1 file changed, 3 insertions(+), 4 deletions(-) diff --git a/kernel/cpuset.c b/kernel/cpuset.c index ba0a4d74d262..f33c7153b6d7 100644 --- a/kernel/cpuset.c +++ b/kernel/cpuset.c @@ -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) -- 2.20.1