1BPFTOOL-PERF(8)                                                BPFTOOL-PERF(8)
2
3
4

NAME

6       bpftool-perf - tool for inspection of perf related bpf prog attachments
7

SYNOPSIS

9          bpftool [OPTIONS] perf COMMAND
10
11          OPTIONS  := { { -j | --json } [{ -p | --pretty }] | { -d | --debug }
12          }
13
14          COMMANDS := { show | list | help }
15

PERF COMMANDS

17       bpftool perf { show | list }
18       bpftool perf help
19
20

DESCRIPTION

22          bpftool perf { show | list }
23                 List all raw_tracepoint, tracepoint, kprobe attachment in the
24                 system.
25
26                 Output will start with process id and file descriptor in that
27                 process, followed by bpf program id, attachment  information,
28                 and  attachment  point.   The attachment point for raw_trace‐
29                 point/tracepoint is the trace  probe  name.   The  attachment
30                 point  for k[ret]probe is either symbol name and offset, or a
31                 kernel virtual address.  The attachment point for u[ret]probe
32                 is the file name and the file offset.
33
34          bpftool perf help
35                 Print short help message.
36

OPTIONS

38          -h, --help
39                 Print short help message (similar to bpftool help).
40
41          -V, --version
42                 Print  version  number  (similar to bpftool version), and op‐
43                 tional features that were included when bpftool was compiled.
44                 Optional  features  include linking against libbfd to provide
45                 the disassembler for  JIT-ted  programs  (bpftool  prog  dump
46                 jited) and usage of BPF skeletons (some features like bpftool
47                 prog profile or showing pids associated to  BPF  objects  may
48                 rely on it).
49
50          -j, --json
51                 Generate  JSON output. For commands that cannot produce JSON,
52                 this option has no effect.
53
54          -p, --pretty
55                 Generate human-readable JSON output. Implies -j.
56
57          -d, --debug
58                 Print all logs available, even debug-level information.  This
59                 includes  logs from libbpf as well as from the verifier, when
60                 attempting to load programs.
61

EXAMPLES

63       # bpftool perf
64
65
66          pid 21711  fd 5: prog_id 5  kprobe  func __x64_sys_write  offset 0
67          pid 21765  fd 5: prog_id 7  kretprobe  func __x64_sys_nanosleep  offset 0
68          pid 21767  fd 5: prog_id 8  tracepoint  sys_enter_nanosleep
69          pid 21800  fd 5: prog_id 9  uprobe  filename /home/yhs/a.out  offset 1159
70
71       # bpftool -j perf
72
73
74          [{"pid":21711,"fd":5,"prog_id":5,"fd_type":"kprobe","func":"__x64_sys_write","offset":0}, \
75           {"pid":21765,"fd":5,"prog_id":7,"fd_type":"kretprobe","func":"__x64_sys_nanosleep","offset":0}, \
76           {"pid":21767,"fd":5,"prog_id":8,"fd_type":"tracepoint","tracepoint":"sys_enter_nanosleep"}, \
77           {"pid":21800,"fd":5,"prog_id":9,"fd_type":"uprobe","filename":"/home/yhs/a.out","offset":1159}]
78

SEE ALSO

80          bpf(2),      bpf-helpers(7),       bpftool(8),       bpftool-btf(8),
81          bpftool-cgroup(8),        bpftool-feature(8),        bpftool-gen(8),
82          bpftool-iter(8),  bpftool-link(8),  bpftool-map(8),  bpftool-net(8),
83          bpftool-prog(8), bpftool-struct_ops(8)
84
85
86
87
88                                                               BPFTOOL-PERF(8)
Impressum