mirror of https://gitee.com/openkylin/linux.git
82 lines
2.3 KiB
ReStructuredText
82 lines
2.3 KiB
ReStructuredText
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bpftool-perf
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================
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-------------------------------------------------------------------------------
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tool for inspection of perf related bpf prog attachments
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-------------------------------------------------------------------------------
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:Manual section: 8
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SYNOPSIS
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========
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**bpftool** [*OPTIONS*] **perf** *COMMAND*
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*OPTIONS* := { [{ **-j** | **--json** }] [{ **-p** | **--pretty** }] }
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*COMMANDS* :=
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{ **show** | **list** | **help** }
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PERF COMMANDS
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=============
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| **bpftool** **perf { show | list }**
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| **bpftool** **perf help**
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DESCRIPTION
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===========
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**bpftool perf { show | list }**
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List all raw_tracepoint, tracepoint, kprobe attachment in the system.
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Output will start with process id and file descriptor in that process,
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followed by bpf program id, attachment information, and attachment point.
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The attachment point for raw_tracepoint/tracepoint is the trace probe name.
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The attachment point for k[ret]probe is either symbol name and offset,
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or a kernel virtual address.
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The attachment point for u[ret]probe is the file name and the file offset.
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**bpftool perf help**
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Print short help message.
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OPTIONS
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=======
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-h, --help
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Print short generic help message (similar to **bpftool help**).
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-v, --version
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Print version number (similar to **bpftool version**).
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-j, --json
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Generate JSON output. For commands that cannot produce JSON, this
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option has no effect.
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-p, --pretty
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Generate human-readable JSON output. Implies **-j**.
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EXAMPLES
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========
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| **# bpftool perf**
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::
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pid 21711 fd 5: prog_id 5 kprobe func __x64_sys_write offset 0
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pid 21765 fd 5: prog_id 7 kretprobe func __x64_sys_nanosleep offset 0
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pid 21767 fd 5: prog_id 8 tracepoint sys_enter_nanosleep
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pid 21800 fd 5: prog_id 9 uprobe filename /home/yhs/a.out offset 1159
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| **# bpftool -j perf**
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::
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[{"pid":21711,"fd":5,"prog_id":5,"fd_type":"kprobe","func":"__x64_sys_write","offset":0}, \
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{"pid":21765,"fd":5,"prog_id":7,"fd_type":"kretprobe","func":"__x64_sys_nanosleep","offset":0}, \
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{"pid":21767,"fd":5,"prog_id":8,"fd_type":"tracepoint","tracepoint":"sys_enter_nanosleep"}, \
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{"pid":21800,"fd":5,"prog_id":9,"fd_type":"uprobe","filename":"/home/yhs/a.out","offset":1159}]
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SEE ALSO
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========
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**bpftool**\ (8), **bpftool-prog**\ (8), **bpftool-map**\ (8)
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