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| author | Yonghong Song <yhs@fb.com> | 2020-08-21 11:44:18 -0700 |
|---|---|---|
| committer | Alexei Starovoitov <ast@kernel.org> | 2020-08-21 14:01:39 -0700 |
| commit | 6b0a249a301e2af9adda84adbced3a2988248b95 (patch) | |
| tree | 889c95fb17b222cd9b2d1809845b6e988692525b /tools/testing/selftests/bpf/prog_tests/perf_buffer.c | |
| parent | 149cb3395504736485df1b93133e710dcf215c56 (diff) | |
bpf: Implement link_query for bpf iterators
This patch implemented bpf_link callback functions
show_fdinfo and fill_link_info to support link_query
interface.
The general interface for show_fdinfo and fill_link_info
will print/fill the target_name. Each targets can
register show_fdinfo and fill_link_info callbacks
to print/fill more target specific information.
For example, the below is a fdinfo result for a bpf
task iterator.
$ cat /proc/1749/fdinfo/7
pos: 0
flags: 02000000
mnt_id: 14
link_type: iter
link_id: 11
prog_tag: 990e1f8152f7e54f
prog_id: 59
target_name: task
Signed-off-by: Yonghong Song <yhs@fb.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Link: https://lore.kernel.org/bpf/20200821184418.574122-1-yhs@fb.com
Diffstat (limited to 'tools/testing/selftests/bpf/prog_tests/perf_buffer.c')
0 files changed, 0 insertions, 0 deletions