blob: 6e6a8b22c8594f42e9727c81a8e4b4adc8301e43 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
|
perf-ftrace(1)
=============
NAME
----
perf-ftrace - simple wrapper for kernel's ftrace functionality
SYNOPSIS
--------
[verse]
'perf ftrace' <command>
DESCRIPTION
-----------
The 'perf ftrace' command is a simple wrapper of kernel's ftrace
functionality. It only supports single thread tracing currently and
just reads trace_pipe in text and then write it to stdout.
The following options apply to perf ftrace.
OPTIONS
-------
-t::
--tracer=::
Tracer to use: function_graph or function.
-v::
--verbose=::
Verbosity level.
-p::
--pid=::
Trace on existing process id (comma separated list).
-a::
--all-cpus::
Force system-wide collection. Scripts run without a <command>
normally use -a by default, while scripts run with a <command>
normally don't - this option allows the latter to be run in
system-wide mode.
-C::
--cpu=::
Only trace for the list of CPUs provided. Multiple CPUs can
be provided as a comma separated list with no space like: 0,1.
Ranges of CPUs are specified with -: 0-2.
Default is to trace on all online CPUs.
SEE ALSO
--------
linkperf:perf-record[1], linkperf:perf-trace[1]
|
