Yonghong Song 2057c92bc9 bpf: Support bpf tracing/iter programs for BPF_LINK_UPDATE
Added BPF_LINK_UPDATE support for tracing/iter programs.
This way, a file based bpf iterator, which holds a reference
to the link, can have its bpf program updated without
creating new files.

Signed-off-by: Yonghong Song <yhs@fb.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Acked-by: Andrii Nakryiko <andriin@fb.com>
Link: https://lore.kernel.org/bpf/20200509175902.2475262-1-yhs@fb.com
2020-05-09 17:05:26 -07:00
..
2020-04-26 09:43:05 -07:00
2020-03-13 12:49:52 -07:00
2020-04-26 09:43:05 -07:00