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| author | Chen Ridong <chenridong@huawei.com> | 2025-12-18 09:31:39 +0000 |
|---|---|---|
| committer | Tejun Heo <tj@kernel.org> | 2025-12-18 08:36:15 -1000 |
| commit | cb33f8814c4af3c917fa249cd9ef34b17a5ef562 (patch) | |
| tree | df2a4c427c035bf0c9d8197420c88e300d68a6f4 /kernel/cgroup/cpuset-v1.c | |
| parent | 4ef42c645f0ec9b56f0715204013a27c2fec801e (diff) | |
| download | linux-next-cb33f8814c4af3c917fa249cd9ef34b17a5ef562.tar.gz linux-next-cb33f8814c4af3c917fa249cd9ef34b17a5ef562.zip | |
cpuset: move update_domain_attr_tree to cpuset_v1.c
Since relax_domain_level is only applicable to v1, move
update_domain_attr_tree() to cpuset-v1.c, which solely updates
relax_domain_level,
Additionally, relax_domain_level is now initialized in cpuset1_inited.
Accordingly, the initialization of relax_domain_level in top_cpuset is
removed. The unnecessary remote_partition initialization in top_cpuset
is also cleaned up.
As a result, relax_domain_level can be defined in cpuset only when
CONFIG_CPUSETS_V1=y.
Signed-off-by: Chen Ridong <chenridong@huawei.com>
Reviewed-by: Waiman Long <longman@redhat.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
Diffstat (limited to 'kernel/cgroup/cpuset-v1.c')
| -rw-r--r-- | kernel/cgroup/cpuset-v1.c | 28 |
1 files changed, 28 insertions, 0 deletions
diff --git a/kernel/cgroup/cpuset-v1.c b/kernel/cgroup/cpuset-v1.c index 84f00ab9c81f..a4f8f1c3cfaa 100644 --- a/kernel/cgroup/cpuset-v1.c +++ b/kernel/cgroup/cpuset-v1.c @@ -502,6 +502,7 @@ out_unlock: void cpuset1_init(struct cpuset *cs) { fmeter_init(&cs->fmeter); + cs->relax_domain_level = -1; } void cpuset1_online_css(struct cgroup_subsys_state *css) @@ -552,6 +553,33 @@ void cpuset1_online_css(struct cgroup_subsys_state *css) cpuset_callback_unlock_irq(); } +static void +update_domain_attr(struct sched_domain_attr *dattr, struct cpuset *c) +{ + if (dattr->relax_domain_level < c->relax_domain_level) + dattr->relax_domain_level = c->relax_domain_level; +} + +void update_domain_attr_tree(struct sched_domain_attr *dattr, + struct cpuset *root_cs) +{ + struct cpuset *cp; + struct cgroup_subsys_state *pos_css; + + rcu_read_lock(); + cpuset_for_each_descendant_pre(cp, pos_css, root_cs) { + /* skip the whole subtree if @cp doesn't have any CPU */ + if (cpumask_empty(cp->cpus_allowed)) { + pos_css = css_rightmost_descendant(pos_css); + continue; + } + + if (is_sched_load_balance(cp)) + update_domain_attr(dattr, cp); + } + rcu_read_unlock(); +} + /* * for the common functions, 'private' gives the type of file */ |