Commit b1e3aeb1 authored by Tejun Heo's avatar Tejun Heo
Browse files

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: default avatarTejun Heo <tj@kernel.org>
Cc: Peter Zijlstra (Intel) <peterz@infradead.org>
Cc: Waiman Long <longman@redhat.com>
parent 5cf8114d

Documentation/admin-guide/cgroup-v2.rst

+3 −3
Original line number Diff line number Diff line
@@ -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

kernel/cgroup/cpuset.c

+4 −4
Original line number Diff line number Diff line
@@ -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,

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