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cpuset: Minor cgroup2 interface updates 

* Rename the partition file from "cpuset.sched.partition" to
  "cpuset.cpus.partition".

* When writing to the partition file, drop "0" and "1" and only accept
  "member" and "root".

Signed-off-by: Tejun Heo <tj@kernel.org>
Cc: Peter Zijlstra (Intel) <peterz@infradead.org>
Cc: Waiman Long <longman@redhat.com>
This commit is contained in:
Tejun Heo 2018-11-13 12:03:33 -08:00
parent 5cf8114d6e
commit b1e3aeb11c
2 changed files with 7 additions and 7 deletions
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6
Documentation/admin-guide/cgroup-v2.rst
View File

@ -1708,15 +1708,15 @@ Cpuset Interface Files
Its value will be affected by memory nodes hotplug events.
cpuset.sched.partition
cpuset.cpus.partition
A read-write single value file which exists on non-root
cpuset-enabled cgroups. This flag is owned by the parent cgroup
and is not delegatable.
It accepts only the following input values when written to.
"root" or "1" - a paritition root
"member" or "0" - a non-root member of a partition
"root" - a paritition root
"member" - a non-root member of a partition
When set to be a partition root, the current cgroup is the
root of a new partition or scheduling domain that comprises

8
kernel/cgroup/cpuset.c
View File

@ -2468,11 +2468,11 @@ static ssize_t sched_partition_write(struct kernfs_open_file *of, char *buf,
buf = strstrip(buf);
/*
* Convert "root"/"1" to 1, and convert "member"/"0" to 0.
* Convert "root" to ENABLED, and convert "member" to DISABLED.
*/
if (!strcmp(buf, "root") || !strcmp(buf, "1"))
if (!strcmp(buf, "root"))
val = PRS_ENABLED;
else if (!strcmp(buf, "member") || !strcmp(buf, "0"))
else if (!strcmp(buf, "member"))
val = PRS_DISABLED;
else
return -EINVAL;
@ -2631,7 +2631,7 @@ static struct cftype dfl_files[] = {
},
{
.name = "sched.partition",
.name = "cpus.partition",
.seq_show = sched_partition_show,
.write = sched_partition_write,
.private = FILE_PARTITION_ROOT,