With the addition of the syscall prog type we should now
be able to see feature probe info for that prog type:

    $ bpftool feature probe kernel
    ...
    eBPF program_type syscall is available
    ...
    eBPF helpers supported for program type syscall:
        ...
        - bpf_sys_bpf
        - bpf_sys_close

And for the link types, their names should aid in
the output.

Before:
    $ bpftool link show
    50: type 7  prog 5042
	    bpf_cookie 0
	    pids vfsstat(394433)

After:
    $ bpftool link show
    57: perf_event  prog 5058
	    bpf_cookie 0
	    pids vfsstat(394725)

Milan Landaverde (3):
  bpf/bpftool: add syscall prog type
  bpf/bpftool: add missing link types
  bpf/bpftool: handle libbpf_probe_prog_type errors

 tools/bpf/bpftool/feature.c | 2 +-
 tools/bpf/bpftool/link.c    | 2 ++
 tools/bpf/bpftool/prog.c    | 1 +
 3 files changed, 4 insertions(+), 1 deletion(-)

--
2.32.0

Hello:

This series was applied to bpf/bpf-next.git (master)
by Andrii Nakryiko <andrii@kernel.org>:

On Thu, 31 Mar 2022 11:45:52 -0400 you wrote:
> With the addition of the syscall prog type we should now
> be able to see feature probe info for that prog type:
> 
>     $ bpftool feature probe kernel
>     ...
>     eBPF program_type syscall is available
>     ...
>     eBPF helpers supported for program type syscall:
>         ...
>         - bpf_sys_bpf
>         - bpf_sys_close
> 
> [...]

Here is the summary with links:
  - [bpf-next,1/3] bpf/bpftool: add syscall prog type
    https://git.kernel.org/bpf/bpf-next/c/380341637ebb
  - [bpf-next,2/3] bpf/bpftool: add missing link types
    https://git.kernel.org/bpf/bpf-next/c/fff3dfab1786
  - [bpf-next,3/3] bpf/bpftool: handle libbpf_probe_prog_type errors
    https://git.kernel.org/bpf/bpf-next/c/7b53eaa656c3

You are awesome, thank you!
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