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cgroup: Replace deprecated CPU-hotplug functions.
The functions get_online_cpus() and put_online_cpus() have been deprecated during the CPU hotplug rework. They map directly to cpus_read_lock() and cpus_read_unlock(). Replace deprecated CPU-hotplug functions with the official version. The behavior remains unchanged. Cc: Zefan Li <lizefan.x@bytedance.com> Cc: Tejun Heo <tj@kernel.org> Cc: Johannes Weiner <hannes@cmpxchg.org> Cc: cgroups@vger.kernel.org Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de> Signed-off-by: Tejun Heo <tj@kernel.org>
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@ -979,7 +979,7 @@ partition_and_rebuild_sched_domains(int ndoms_new, cpumask_var_t doms_new[],
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* 'cpus' is removed, then call this routine to rebuild the
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* scheduler's dynamic sched domains.
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*
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* Call with cpuset_mutex held. Takes get_online_cpus().
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* Call with cpuset_mutex held. Takes cpus_read_lock().
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*/
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static void rebuild_sched_domains_locked(void)
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{
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@ -1040,11 +1040,11 @@ static void rebuild_sched_domains_locked(void)
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void rebuild_sched_domains(void)
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{
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get_online_cpus();
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cpus_read_lock();
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percpu_down_write(&cpuset_rwsem);
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rebuild_sched_domains_locked();
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percpu_up_write(&cpuset_rwsem);
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put_online_cpus();
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cpus_read_unlock();
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}
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/**
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@ -2288,7 +2288,7 @@ static int cpuset_write_u64(struct cgroup_subsys_state *css, struct cftype *cft,
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cpuset_filetype_t type = cft->private;
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int retval = 0;
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get_online_cpus();
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cpus_read_lock();
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percpu_down_write(&cpuset_rwsem);
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if (!is_cpuset_online(cs)) {
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retval = -ENODEV;
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@ -2326,7 +2326,7 @@ static int cpuset_write_u64(struct cgroup_subsys_state *css, struct cftype *cft,
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}
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out_unlock:
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percpu_up_write(&cpuset_rwsem);
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put_online_cpus();
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cpus_read_unlock();
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return retval;
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}
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@ -2337,7 +2337,7 @@ static int cpuset_write_s64(struct cgroup_subsys_state *css, struct cftype *cft,
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cpuset_filetype_t type = cft->private;
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int retval = -ENODEV;
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get_online_cpus();
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cpus_read_lock();
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percpu_down_write(&cpuset_rwsem);
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if (!is_cpuset_online(cs))
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goto out_unlock;
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@ -2352,7 +2352,7 @@ static int cpuset_write_s64(struct cgroup_subsys_state *css, struct cftype *cft,
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}
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out_unlock:
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percpu_up_write(&cpuset_rwsem);
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put_online_cpus();
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cpus_read_unlock();
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return retval;
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}
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@ -2391,7 +2391,7 @@ static ssize_t cpuset_write_resmask(struct kernfs_open_file *of,
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kernfs_break_active_protection(of->kn);
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flush_work(&cpuset_hotplug_work);
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get_online_cpus();
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cpus_read_lock();
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percpu_down_write(&cpuset_rwsem);
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if (!is_cpuset_online(cs))
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goto out_unlock;
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@ -2417,7 +2417,7 @@ static ssize_t cpuset_write_resmask(struct kernfs_open_file *of,
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free_cpuset(trialcs);
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out_unlock:
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percpu_up_write(&cpuset_rwsem);
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put_online_cpus();
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cpus_read_unlock();
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kernfs_unbreak_active_protection(of->kn);
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css_put(&cs->css);
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flush_workqueue(cpuset_migrate_mm_wq);
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@ -2548,7 +2548,7 @@ static ssize_t sched_partition_write(struct kernfs_open_file *of, char *buf,
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return -EINVAL;
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css_get(&cs->css);
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get_online_cpus();
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cpus_read_lock();
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percpu_down_write(&cpuset_rwsem);
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if (!is_cpuset_online(cs))
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goto out_unlock;
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@ -2556,7 +2556,7 @@ static ssize_t sched_partition_write(struct kernfs_open_file *of, char *buf,
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retval = update_prstate(cs, val);
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out_unlock:
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percpu_up_write(&cpuset_rwsem);
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put_online_cpus();
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cpus_read_unlock();
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css_put(&cs->css);
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return retval ?: nbytes;
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}
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@ -2762,7 +2762,7 @@ static int cpuset_css_online(struct cgroup_subsys_state *css)
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if (!parent)
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return 0;
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get_online_cpus();
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cpus_read_lock();
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percpu_down_write(&cpuset_rwsem);
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set_bit(CS_ONLINE, &cs->flags);
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@ -2815,7 +2815,7 @@ static int cpuset_css_online(struct cgroup_subsys_state *css)
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spin_unlock_irq(&callback_lock);
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out_unlock:
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percpu_up_write(&cpuset_rwsem);
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put_online_cpus();
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cpus_read_unlock();
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return 0;
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}
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@ -2834,7 +2834,7 @@ static void cpuset_css_offline(struct cgroup_subsys_state *css)
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{
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struct cpuset *cs = css_cs(css);
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get_online_cpus();
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cpus_read_lock();
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percpu_down_write(&cpuset_rwsem);
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if (is_partition_root(cs))
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@ -2855,7 +2855,7 @@ static void cpuset_css_offline(struct cgroup_subsys_state *css)
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clear_bit(CS_ONLINE, &cs->flags);
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percpu_up_write(&cpuset_rwsem);
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put_online_cpus();
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cpus_read_unlock();
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}
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static void cpuset_css_free(struct cgroup_subsys_state *css)
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