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Diffstat (limited to 'tools/bpf/bpftool/Documentation/bpftool-feature.rst')
| -rw-r--r-- | tools/bpf/bpftool/Documentation/bpftool-feature.rst | 13 |
1 files changed, 11 insertions, 2 deletions
diff --git a/tools/bpf/bpftool/Documentation/bpftool-feature.rst b/tools/bpf/bpftool/Documentation/bpftool-feature.rst index 255e3b3629a0..53092995f46b 100644 --- a/tools/bpf/bpftool/Documentation/bpftool-feature.rst +++ b/tools/bpf/bpftool/Documentation/bpftool-feature.rst @@ -19,15 +19,24 @@ SYNOPSIS MAP COMMANDS ============= -| **bpftool** **feature probe** [**kernel**] +| **bpftool** **feature probe** [**kernel**] [**macros** [**prefix** *PREFIX*]] | **bpftool** **feature help** DESCRIPTION =========== - **bpftool feature probe** [**kernel**] + **bpftool feature probe** [**kernel**] [**macros** [**prefix** *PREFIX*]] Probe the running kernel and dump a number of eBPF-related parameters, such as availability of the **bpf()** system call. + If the **macros** keyword (but not the **-j** option) is + passed, a subset of the output is dumped as a list of + **#define** macros that are ready to be included in a C + header file, for example. If, additionally, **prefix** is + used to define a *PREFIX*, the provided string will be used + as a prefix to the names of the macros: this can be used to + avoid conflicts on macro names when including the output of + this command as a header file. + Keyword **kernel** can be omitted. Note that when probed, some eBPF helpers (e.g. |