From: Li Zefan <lizefan@huawei.com>
To: Tejun Heo <tj@kernel.org>
Cc: LKML <linux-kernel@vger.kernel.org>, cgroups <cgroups@vger.kernel.org>
Subject: [PATCH v2 06/12] cpuset: initialize top_cpuset's configured masks at mount
Date: Fri, 11 Oct 2013 17:50:50 +0800 [thread overview]
Message-ID: <5257C9FA.8080306@huawei.com> (raw)
In-Reply-To: <5257C9A1.1030404@huawei.com>
As we now have to support both sane_behavior and !sane_behavior,
top_cpuset's configured masks need to be initialized accordingly.
Signed-off-by: Li Zefan <lizefan@huawei.com>
---
kernel/cpuset.c | 19 +++++++++++++++++++
1 file changed, 19 insertions(+)
diff --git a/kernel/cpuset.c b/kernel/cpuset.c
index 360e547..5c53ba5 100644
--- a/kernel/cpuset.c
+++ b/kernel/cpuset.c
@@ -2113,8 +2113,27 @@ static void cpuset_css_free(struct cgroup_subsys_state *css)
kfree(cs);
}
+void cpuset_bind(struct cgroup_subsys_state *root_css)
+{
+ mutex_lock(&cpuset_mutex);
+ mutex_lock(&callback_mutex);
+
+ if (cgroup_sane_behavior(root_css->cgroup)) {
+ cpumask_copy(top_cpuset.cpus_allowed, cpu_possible_mask);
+ top_cpuset.mems_allowed = node_possible_map;
+ } else {
+ cpumask_copy(top_cpuset.cpus_allowed,
+ top_cpuset.effective_cpus);
+ top_cpuset.mems_allowed = top_cpuset.effective_mems;
+ }
+
+ mutex_unlock(&callback_mutex);
+ mutex_unlock(&cpuset_mutex);
+}
+
struct cgroup_subsys cpuset_subsys = {
.name = "cpuset",
+ .bind = cpuset_bind,
.css_alloc = cpuset_css_alloc,
.css_online = cpuset_css_online,
.css_offline = cpuset_css_offline,
--
1.8.0.2
next prev parent reply other threads:[~2013-10-11 9:50 UTC|newest]
Thread overview: 20+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-10-11 9:49 [PATCH v2 00/12] cpuset: separate configured masks and effective masks Li Zefan
2013-10-11 9:49 ` Li Zefan
[not found] ` <5257C9A1.1030404-hv44wF8Li93QT0dZR+AlfA@public.gmane.org>
2013-10-11 9:49 ` [PATCH v2 01/12] cpuset: add cs->effective_cpus and cs->effective_mems Li Zefan
2013-10-11 9:49 ` Li Zefan
2013-10-11 9:49 ` [PATCH v2 02/12] cpuset: update cpuset->effective_{cpus,mems} at hotplug Li Zefan
2013-10-11 9:50 ` [PATCH v2 03/12] cpuset: update cs->effective_{cpus,mems} when config changes Li Zefan
[not found] ` <5257C9CC.3080806-hv44wF8Li93QT0dZR+AlfA@public.gmane.org>
2013-10-15 15:18 ` Tejun Heo
2013-10-15 15:18 ` Tejun Heo
2013-10-11 9:50 ` [PATCH v2 04/12] cpuset: inherit ancestor's masks if effective_{cpus,mems} becomes empty Li Zefan
2013-10-11 9:50 ` [PATCH v2 05/12] cpuset: use effective cpumask to build sched domains Li Zefan
[not found] ` <5257C9EE.9080902-hv44wF8Li93QT0dZR+AlfA@public.gmane.org>
2013-10-15 15:25 ` Tejun Heo
2013-10-15 15:25 ` Tejun Heo
2013-10-11 9:50 ` Li Zefan [this message]
2013-10-11 9:51 ` [PATCH v2 07/12] cpuset: apply cs->effective_{cpus,mems} Li Zefan
2013-10-11 9:51 ` [PATCH v2 08/12] cpuset: make cs->{cpus,mems}_allowed as user-configured masks Li Zefan
2013-10-11 9:51 ` [PATCH v2 09/12] cpuset: refactor cpuset_hotplug_update_tasks() Li Zefan
2013-10-11 9:51 ` [PATCH v2 10/12] cpuset: enable onlined cpu/node in effective masks Li Zefan
2013-10-11 9:51 ` [PATCH v2 11/12] cpuset: allow writing offlined masks to cpuset.cpus/mems Li Zefan
2013-10-15 15:36 ` Tejun Heo
2013-10-11 9:52 ` [PATCH v2 12/12] cpuset: export effective masks to userspace Li Zefan
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