Skip to content

Latest commit

 

History

History
69 lines (49 loc) · 2.02 KB

bpftool-perf.rst

File metadata and controls

69 lines (49 loc) · 2.02 KB
Raw

bpftool-perf

tool for inspection of perf related bpf prog attachments

Manual section:8

SYNOPSIS

bpftool [OPTIONS] perf COMMAND

OPTIONS := { |COMMON_OPTIONS| }

COMMANDS := { show | list | help }

PERF COMMANDS

bpftool perf { show | list }
bpftool perf help

DESCRIPTION

bpftool perf { show | list }

List all raw_tracepoint, tracepoint, kprobe attachment in the system.

Output will start with process id and file descriptor in that process, followed by bpf program id, attachment information, and attachment point. The attachment point for raw_tracepoint/tracepoint is the trace probe name. The attachment point for k[ret]probe is either symbol name and offset, or a kernel virtual address. The attachment point for u[ret]probe is the file name and the file offset.

bpftool perf help
Print short help message.

OPTIONS

EXAMPLES

# bpftool perf
pid 21711  fd 5: prog_id 5  kprobe  func __x64_sys_write  offset 0
pid 21765  fd 5: prog_id 7  kretprobe  func __x64_sys_nanosleep  offset 0
pid 21767  fd 5: prog_id 8  tracepoint  sys_enter_nanosleep
pid 21800  fd 5: prog_id 9  uprobe  filename /home/yhs/a.out  offset 1159

# bpftool -j perf
[{"pid":21711,"fd":5,"prog_id":5,"fd_type":"kprobe","func":"__x64_sys_write","offset":0}, \
 {"pid":21765,"fd":5,"prog_id":7,"fd_type":"kretprobe","func":"__x64_sys_nanosleep","offset":0}, \
 {"pid":21767,"fd":5,"prog_id":8,"fd_type":"tracepoint","tracepoint":"sys_enter_nanosleep"}, \
 {"pid":21800,"fd":5,"prog_id":9,"fd_type":"uprobe","filename":"/home/yhs/a.out","offset":1159}]