cgroup: add documentation for the PIDs controller
Add documentation derived from kernel/cgroup_pids.c to the relevant
Documentation/ directory, along with a few examples of how to use the
PIDs controller as well an explanation of its peculiarities.
Signed-off-by: Aleksa Sarai <cyphar@cyphar.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
diff --git a/Documentation/cgroups/00-INDEX b/Documentation/cgroups/00-INDEX
index 96ce071..3f5a40f 100644
--- a/Documentation/cgroups/00-INDEX
+++ b/Documentation/cgroups/00-INDEX
@@ -22,6 +22,8 @@
- Network classifier cgroups details and usages.
net_prio.txt
- Network priority cgroups details and usages.
+pids.txt
+ - Process number cgroups details and usages.
resource_counter.txt
- Resource Counter API.
unified-hierarchy.txt