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| author | Kui-Feng Lee <thinker.li@gmail.com> | 2023-04-20 03:28:22 +0300 |
|---|---|---|
| committer | Alexei Starovoitov <ast@kernel.org> | 2023-04-21 21:10:10 +0300 |
| commit | 45cea721ea36d83969473d2abd29bcc2321cacdd (patch) | |
| tree | 12fa0e18e09ac92e1122d2c034bcf3106adcfc1f /tools/bpf | |
| parent | 0232b788978652571c4f4e57dc26ff8e4837926a (diff) | |
| download | linux-45cea721ea36d83969473d2abd29bcc2321cacdd.tar.xz | |
bpftool: Update doc to explain struct_ops register subcommand.
The "struct_ops register" subcommand now allows for an optional *LINK_DIR*
to be included. This specifies the directory path where bpftool will pin
struct_ops links with the same name as their corresponding map names.
Signed-off-by: Kui-Feng Lee <kuifeng@meta.com>
Reviewed-by: Quentin Monnet <quentin@isovalent.com>
Link: https://lore.kernel.org/r/20230420002822.345222-2-kuifeng@meta.com
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Diffstat (limited to 'tools/bpf')
| -rw-r--r-- | tools/bpf/bpftool/Documentation/bpftool-struct_ops.rst | 12 |
1 files changed, 8 insertions, 4 deletions
diff --git a/tools/bpf/bpftool/Documentation/bpftool-struct_ops.rst b/tools/bpf/bpftool/Documentation/bpftool-struct_ops.rst index ee53a122c0c7..8022b5321dbe 100644 --- a/tools/bpf/bpftool/Documentation/bpftool-struct_ops.rst +++ b/tools/bpf/bpftool/Documentation/bpftool-struct_ops.rst @@ -26,7 +26,7 @@ STRUCT_OPS COMMANDS | **bpftool** **struct_ops { show | list }** [*STRUCT_OPS_MAP*] | **bpftool** **struct_ops dump** [*STRUCT_OPS_MAP*] -| **bpftool** **struct_ops register** *OBJ* +| **bpftool** **struct_ops register** *OBJ* [*LINK_DIR*] | **bpftool** **struct_ops unregister** *STRUCT_OPS_MAP* | **bpftool** **struct_ops help** | @@ -51,10 +51,14 @@ DESCRIPTION for the given struct_ops. Otherwise, it dumps all struct_ops currently existing in the system. - **bpftool struct_ops register** *OBJ* + **bpftool struct_ops register** *OBJ* [*LINK_DIR*] Register bpf struct_ops from *OBJ*. All struct_ops under - the ELF section ".struct_ops" will be registered to - its kernel subsystem. + the ELF section ".struct_ops" and ".struct_ops.link" will + be registered to its kernel subsystem. For each + struct_ops in the ".struct_ops.link" section, a link + will be created. You can give *LINK_DIR* to provide a + directory path where these links will be pinned with the + same name as their corresponding map name. **bpftool struct_ops unregister** *STRUCT_OPS_MAP* Unregister the *STRUCT_OPS_MAP* from the kernel subsystem. |