2024-05-25 09:51:44

by Xiu Jianfeng

[permalink] [raw]
Subject: [PATCH -next] cgroup/cpuset: Remove unnecessary zeroing

The struct cpuset is kzalloc'd, all the members are zeroed already,
so don't need nodes_clear() here.

No functional changes intended.

Signed-off-by: Xiu Jianfeng <[email protected]>
---
kernel/cgroup/cpuset.c | 2 --
1 file changed, 2 deletions(-)

diff --git a/kernel/cgroup/cpuset.c b/kernel/cgroup/cpuset.c
index c12b9fdb22a4..a553e3d46498 100644
--- a/kernel/cgroup/cpuset.c
+++ b/kernel/cgroup/cpuset.c
@@ -4009,8 +4009,6 @@ cpuset_css_alloc(struct cgroup_subsys_state *parent_css)
}

__set_bit(CS_SCHED_LOAD_BALANCE, &cs->flags);
- nodes_clear(cs->mems_allowed);
- nodes_clear(cs->effective_mems);
fmeter_init(&cs->fmeter);
cs->relax_domain_level = -1;
INIT_LIST_HEAD(&cs->remote_sibling);
--
2.34.1



2024-05-25 18:56:38

by Markus Elfring

[permalink] [raw]
Subject: Re: [PATCH -next] cgroup/cpuset: Remove unnecessary zeroing

> The struct cpuset is kzalloc'd, all the members are zeroed already,
> so don't need nodes_clear() here.

* How do you think about to convert a part of this change description
to an imperative wording?
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/tree/Documentation/process/submitting-patches.rst?h=v6.9#n94

* Please avoid a typo in the domain of an email address.

* Can the proposed source code cleanup be relevant for the addition
of the tag “Fixes”?


Regards,
Markus

2024-05-26 18:29:47

by Tejun Heo

[permalink] [raw]
Subject: Re: [PATCH -next] cgroup/cpuset: Remove unnecessary zeroing

On Sat, May 25, 2024 at 09:44:03AM +0000, Xiu Jianfeng wrote:
> The struct cpuset is kzalloc'd, all the members are zeroed already,
> so don't need nodes_clear() here.
>
> No functional changes intended.
>
> Signed-off-by: Xiu Jianfeng <[email protected]>

Applied to cgroup/for-6.11.

Thanks.

--
tejun