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bpftool: document cgroup tree command

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Describe cgroup tree command in the corresponding bpftool man page.

Signed-off-by: Roman Gushchin <guro@fb.com>
Acked-by: Jakub Kicinski <jakub.kicinski@netronome.com>
Cc: Quentin Monnet <quentin.monnet@netronome.com>
Cc: Daniel Borkmann <daniel@iogearbox.net>
Cc: Alexei Starovoitov <ast@kernel.org>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
This commit is contained in:
Roman Gushchin 2018-07-06 14:28:15 -07:00 committed by Daniel Borkmann
parent 2058b38371
commit 7d31a0a168
1 changed files with 11 additions and 1 deletions
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12
tools/bpf/bpftool/Documentation/bpftool-cgroup.rst
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@ -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*.