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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** } } *OPTIONS* := { { **-j** | **--json** } [{ **-p** | **--pretty** }] | { **-f** | **--bpffs** } }
*COMMANDS* := *COMMANDS* :=
{ **show** | **list** | **attach** | **detach** | **help** } { **show** | **list** | **tree** | **attach** | **detach** | **help** }
MAP COMMANDS MAP COMMANDS
============= =============
| **bpftool** **cgroup { show | list }** *CGROUP* | **bpftool** **cgroup { show | list }** *CGROUP*
| **bpftool** **cgroup tree** [*CGROUP_ROOT*]
| **bpftool** **cgroup attach** *CGROUP* *ATTACH_TYPE* *PROG* [*ATTACH_FLAGS*] | **bpftool** **cgroup attach** *CGROUP* *ATTACH_TYPE* *PROG* [*ATTACH_FLAGS*]
| **bpftool** **cgroup detach** *CGROUP* *ATTACH_TYPE* *PROG* | **bpftool** **cgroup detach** *CGROUP* *ATTACH_TYPE* *PROG*
| **bpftool** **cgroup help** | **bpftool** **cgroup help**
@ -39,6 +40,15 @@ DESCRIPTION
Output will start with program ID followed by attach type, Output will start with program ID followed by attach type,
attach flags and program name. 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*] **bpftool cgroup attach** *CGROUP* *ATTACH_TYPE* *PROG* [*ATTACH_FLAGS*]
Attach program *PROG* to the cgroup *CGROUP* with attach type Attach program *PROG* to the cgroup *CGROUP* with attach type
*ATTACH_TYPE* and optional *ATTACH_FLAGS*. *ATTACH_TYPE* and optional *ATTACH_FLAGS*.