The patch titled
Subject: cgroup/cpuset: expose cpuset filesystem with cpuset v1 only
has been added to the -mm mm-unstable branch. Its filename is
cgroup-cpuset-expose-cpuset-filesystem-with-cpuset-v1-only.patch
This patch will shortly appear at
https://git.kernel.org/pub/scm/linux/kernel/git/akpm/25-new.git/tree/patches/cgroup-cpuset-expose-cpuset-filesystem-with-cpuset-v1-only.patch
This patch will later appear in the mm-unstable branch at
git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
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------------------------------------------------------
From: Michal Koutný <mkoutny@xxxxxxxx>
Subject: cgroup/cpuset: expose cpuset filesystem with cpuset v1 only
Date: Mon, 9 Sep 2024 18:32:21 +0200
The cpuset filesystem is a legacy interface to cpuset controller with
(pre-)v1 features. It makes little sense to co-mount it on systems
without cpuset v1, so do no build it when cpuset v1 is not built
neither.
Link: https://lkml.kernel.org/r/20240909163223.3693529-3-mkoutny@xxxxxxxx
Signed-off-by: Michal Koutný <mkoutny@xxxxxxxx>
Reviewed-by: Waiman Long <longman@xxxxxxxxxx>
Cc: Chen Ridong <chenridong@xxxxxxxxxx>
Cc: Johannes Weiner <hannes@xxxxxxxxxxx>
Cc: Michal Hocko <mhocko@xxxxxxxxxx>
Cc: Muchun Song <muchun.song@xxxxxxxxx>
Cc: Roman Gushchin <roman.gushchin@xxxxxxxxx>
Cc: Shakeel Butt <shakeel.butt@xxxxxxxxx>
Cc: Tejun Heo <tj@xxxxxxxxxx>
Cc: Zefan Li <lizefan.x@xxxxxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
kernel/cgroup/cgroup.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
--- a/kernel/cgroup/cgroup.c~cgroup-cpuset-expose-cpuset-filesystem-with-cpuset-v1-only
+++ a/kernel/cgroup/cgroup.c
@@ -2338,7 +2338,7 @@ static struct file_system_type cgroup2_f
.fs_flags = FS_USERNS_MOUNT,
};
-#ifdef CONFIG_CPUSETS
+#ifdef CONFIG_CPUSETS_V1
static const struct fs_context_operations cpuset_fs_context_ops = {
.get_tree = cgroup1_get_tree,
.free = cgroup_fs_context_free,
@@ -6187,7 +6187,7 @@ int __init cgroup_init(void)
WARN_ON(register_filesystem(&cgroup_fs_type));
WARN_ON(register_filesystem(&cgroup2_fs_type));
WARN_ON(!proc_create_single("cgroups", 0, NULL, proc_cgroupstats_show));
-#ifdef CONFIG_CPUSETS
+#ifdef CONFIG_CPUSETS_V1
WARN_ON(register_filesystem(&cpuset_fs_type));
#endif
_
Patches currently in -mm which might be from mkoutny@xxxxxxxx are
memcg-cleanup-with-config_memcg_v1.patch
cgroup-cpuset-expose-cpuset-filesystem-with-cpuset-v1-only.patch
cgroup-disallow-mounting-v1-hierarchies-without-controller-implementation.patch
cgroup-do-not-report-unavailable-v1-controllers-in-proc-cgroups.patch
