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-rw-r--r--tools/bpf/bpftool/Documentation/bpftool-cgroup.rst12
1 files changed, 11 insertions, 1 deletions
diff --git a/tools/bpf/bpftool/Documentation/bpftool-cgroup.rst b/tools/bpf/bpftool/Documentation/bpftool-cgroup.rst
index 7b0e6d453e92..edbe81534c6d 100644
--- a/tools/bpf/bpftool/Documentation/bpftool-cgroup.rst
+++ b/tools/bpf/bpftool/Documentation/bpftool-cgroup.rst
@@ -15,12 +15,13 @@ SYNOPSIS
*OPTIONS* := { { **-j** | **--json** } [{ **-p** | **--pretty** }] | { **-f** | **--bpffs** } }
*COMMANDS* :=
- { **show** | **list** | **attach** | **detach** | **help** }
+ { **show** | **list** | **tree** | **attach** | **detach** | **help** }
MAP COMMANDS
=============
| **bpftool** **cgroup { show | list }** *CGROUP*
+| **bpftool** **cgroup tree** [*CGROUP_ROOT*]
| **bpftool** **cgroup attach** *CGROUP* *ATTACH_TYPE* *PROG* [*ATTACH_FLAGS*]
| **bpftool** **cgroup detach** *CGROUP* *ATTACH_TYPE* *PROG*
| **bpftool** **cgroup help**
@@ -39,6 +40,15 @@ DESCRIPTION
Output will start with program ID followed by attach type,
attach flags and program name.
+ **bpftool cgroup tree** [*CGROUP_ROOT*]
+ Iterate over all cgroups in *CGROUP_ROOT* and list all
+ attached programs. If *CGROUP_ROOT* is not specified,
+ bpftool uses cgroup v2 mountpoint.
+
+ The output is similar to the output of cgroup show/list
+ commands: it starts with absolute cgroup path, followed by
+ program ID, attach type, attach flags and program name.
+
**bpftool cgroup attach** *CGROUP* *ATTACH_TYPE* *PROG* [*ATTACH_FLAGS*]
Attach program *PROG* to the cgroup *CGROUP* with attach type
*ATTACH_TYPE* and optional *ATTACH_FLAGS*.