From 877c737db9355acaa1ec2fd2b8dbdaff82605df7 Mon Sep 17 00:00:00 2001 From: Waiman Long Date: Mon, 27 Nov 2023 14:51:05 -0500 Subject: cgroup/cpuset: Expose cpuset.cpus.isolated The root-only cpuset.cpus.isolated control file shows the current set of isolated CPUs in isolated partitions. This control file is currently exposed only with the cgroup_debug boot command line option which also adds the ".__DEBUG__." prefix. This is actually a useful control file if users want to find out which CPUs are currently in an isolated state by the cpuset controller. Remove CFTYPE_DEBUG flag for this control file and make it available by default without any prefix. The test_cpuset_prs.sh test script and the cgroup-v2.rst documentation file are also updated accordingly. Minor code change is also made in test_cpuset_prs.sh to avoid false test failure when running on debug kernel. Signed-off-by: Waiman Long Signed-off-by: Tejun Heo --- Documentation/admin-guide/cgroup-v2.rst | 7 +++++++ 1 file changed, 7 insertions(+) (limited to 'Documentation/admin-guide') diff --git a/Documentation/admin-guide/cgroup-v2.rst b/Documentation/admin-guide/cgroup-v2.rst index cf5651a11df8..30f6ff2eba47 100644 --- a/Documentation/admin-guide/cgroup-v2.rst +++ b/Documentation/admin-guide/cgroup-v2.rst @@ -2316,6 +2316,13 @@ Cpuset Interface Files treated to have an implicit value of "cpuset.cpus" in the formation of local partition. + cpuset.cpus.isolated + A read-only and root cgroup only multiple values file. + + This file shows the set of all isolated CPUs used in existing + isolated partitions. It will be empty if no isolated partition + is created. + 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 -- cgit v1.2.3