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authorWaiman Long <longman@redhat.com>2024-04-23 21:00:20 -0400
committerTejun Heo <tj@kernel.org>2024-04-23 17:31:18 -1000
commit04d63da4da53e6064683f4970d34ce997f9daee3 (patch)
treedff497d03e8e739fb9a00a7a139c0b0ef2b6560d
parente8784765fae6edc47efb68d425c65e3633d70cd6 (diff)
cgroup/cpuset: Fix incorrect top_cpuset flags
Commit 8996f93fc388 ("cgroup/cpuset: Statically initialize more members of top_cpuset") uses an incorrect "<" relational operator for the CS_SCHED_LOAD_BALANCE bit when initializing the top_cpuset. This results in load_balancing turned off by default in the top cpuset which is bad for performance. Fix this by using the BIT() helper macro to set the desired top_cpuset flags and avoid similar mistake from being made in the future. Fixes: 8996f93fc388 ("cgroup/cpuset: Statically initialize more members of top_cpuset") Signed-off-by: Waiman Long <longman@redhat.com> Signed-off-by: Tejun Heo <tj@kernel.org>
-rw-r--r--kernel/cgroup/cpuset.c4
1 files changed, 2 insertions, 2 deletions
diff --git a/kernel/cgroup/cpuset.c b/kernel/cgroup/cpuset.c
index 032fcc93f2b8..f5443c039619 100644
--- a/kernel/cgroup/cpuset.c
+++ b/kernel/cgroup/cpuset.c
@@ -368,8 +368,8 @@ static inline void notify_partition_change(struct cpuset *cs, int old_prs)
}
static struct cpuset top_cpuset = {
- .flags = ((1 << CS_ONLINE) | (1 << CS_CPU_EXCLUSIVE) |
- (1 << CS_MEM_EXCLUSIVE) | (1 < CS_SCHED_LOAD_BALANCE)),
+ .flags = BIT(CS_ONLINE) | BIT(CS_CPU_EXCLUSIVE) |
+ BIT(CS_MEM_EXCLUSIVE) | BIT(CS_SCHED_LOAD_BALANCE),
.partition_root_state = PRS_ROOT,
.relax_domain_level = -1,
.remote_sibling = LIST_HEAD_INIT(top_cpuset.remote_sibling),