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cpuset: use rebuild_sched_domains() in cpuset_hotplug_workfn() 

In cpuset_hotplug_workfn(), partition_sched_domains() is called without
hotplug lock held, which is actually needed (stated in the function
header of partition_sched_domains()).

This patch tries to use rebuild_sched_domains() to solve the above
issue, and makes the code looks a little simpler.

Signed-off-by: Li Zhong <zhong@linux.vnet.ibm.com>
Signed-off-by: Li Zefan <lizefan@huawei.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
This commit is contained in:
Li Zhong 2013-04-27 06:52:43 -07:00 committed by Tejun Heo
parent 7ef70e4873
commit e0e80a02e5
1 changed files with 2 additions and 11 deletions
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13
kernel/cpuset.c
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@ -2172,17 +2172,8 @@ static void cpuset_hotplug_workfn(struct work_struct *work)
flush_workqueue(cpuset_propagate_hotplug_wq); flush_workqueue(cpuset_propagate_hotplug_wq);
/* rebuild sched domains if cpus_allowed has changed */ /* rebuild sched domains if cpus_allowed has changed */
if (cpus_updated) { if (cpus_updated)
struct sched_domain_attr *attr; rebuild_sched_domains();
cpumask_var_t *doms;
int ndoms;
mutex_lock(&cpuset_mutex);
ndoms = generate_sched_domains(&doms, &attr);
mutex_unlock(&cpuset_mutex);
partition_sched_domains(ndoms, doms, attr);
}
} }
void cpuset_update_active_cpus(bool cpu_online) void cpuset_update_active_cpus(bool cpu_online)