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bpftool-perf.rst (2506B)


      1 ================
      2 bpftool-perf
      3 ================
      4 -------------------------------------------------------------------------------
      5 tool for inspection of perf related bpf prog attachments
      6 -------------------------------------------------------------------------------
      7 
      8 :Manual section: 8
      9 
     10 SYNOPSIS
     11 ========
     12 
     13 	**bpftool** [*OPTIONS*] **perf** *COMMAND*
     14 
     15 	*OPTIONS* := { [{ **-j** | **--json** }] [{ **-p** | **--pretty** }] }
     16 
     17 	*COMMANDS* :=
     18 	{ **show** | **list** | **help** }
     19 
     20 PERF COMMANDS
     21 =============
     22 
     23 |	**bpftool** **perf { show | list }**
     24 |	**bpftool** **perf help**
     25 
     26 DESCRIPTION
     27 ===========
     28 	**bpftool perf { show | list }**
     29 		  List all raw_tracepoint, tracepoint, kprobe attachment in the system.
     30 
     31 		  Output will start with process id and file descriptor in that process,
     32 		  followed by bpf program id, attachment information, and attachment point.
     33 		  The attachment point for raw_tracepoint/tracepoint is the trace probe name.
     34 		  The attachment point for k[ret]probe is either symbol name and offset,
     35 		  or a kernel virtual address.
     36 		  The attachment point for u[ret]probe is the file name and the file offset.
     37 
     38 	**bpftool perf help**
     39 		  Print short help message.
     40 
     41 OPTIONS
     42 =======
     43 	-h, --help
     44 		  Print short generic help message (similar to **bpftool help**).
     45 
     46 	-v, --version
     47 		  Print version number (similar to **bpftool version**).
     48 
     49 	-j, --json
     50 		  Generate JSON output. For commands that cannot produce JSON, this
     51 		  option has no effect.
     52 
     53 	-p, --pretty
     54 		  Generate human-readable JSON output. Implies **-j**.
     55 
     56 EXAMPLES
     57 ========
     58 
     59 | **# bpftool perf**
     60 
     61 ::
     62 
     63       pid 21711  fd 5: prog_id 5  kprobe  func __x64_sys_write  offset 0
     64       pid 21765  fd 5: prog_id 7  kretprobe  func __x64_sys_nanosleep  offset 0
     65       pid 21767  fd 5: prog_id 8  tracepoint  sys_enter_nanosleep
     66       pid 21800  fd 5: prog_id 9  uprobe  filename /home/yhs/a.out  offset 1159
     67 
     68 |
     69 | **# bpftool -j perf**
     70 
     71 ::
     72 
     73     [{"pid":21711,"fd":5,"prog_id":5,"fd_type":"kprobe","func":"__x64_sys_write","offset":0}, \
     74      {"pid":21765,"fd":5,"prog_id":7,"fd_type":"kretprobe","func":"__x64_sys_nanosleep","offset":0}, \
     75      {"pid":21767,"fd":5,"prog_id":8,"fd_type":"tracepoint","tracepoint":"sys_enter_nanosleep"}, \
     76      {"pid":21800,"fd":5,"prog_id":9,"fd_type":"uprobe","filename":"/home/yhs/a.out","offset":1159}]
     77 
     78 
     79 SEE ALSO
     80 ========
     81 	**bpf**\ (2),
     82 	**bpf-helpers**\ (7),
     83 	**bpftool**\ (8),
     84 	**bpftool-prog**\ (8),
     85 	**bpftool-map**\ (8),
     86 	**bpftool-cgroup**\ (8),
     87 	**bpftool-feature**\ (8),
     88 	**bpftool-net**\ (8)