-t, --tracer=
Tracer to use when neither -G nor -F option is not specified:
function_graph or function.
-v, --verbose
Increase the verbosity level.
-F, --funcs
List available functions to trace. It accepts a pattern to
only list interested functions.
-p, --pid=
Trace on existing process id (comma separated list).
--tid=
Trace on existing thread id (comma separated list).
-D, --delay
Time (ms) to wait before starting tracing after program
start.
-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.
-m, --buffer-size
Set the size of per-cpu tracing buffer, <size> is expected to
be a number with appended unit character - B/K/M/G.
--inherit
Trace children processes spawned by our target.
-T, --trace-funcs=
Select function tracer and set function filter on the given
function (or a glob pattern). Multiple functions can be given
by using this option more than once. The function argument
also can be a glob pattern. It will be passed to
set_ftrace_filter in tracefs.
-N, --notrace-funcs=
Select function tracer and do not trace functions given by
the argument. Like -T option, this can be used more than once
to specify multiple functions (or glob patterns). It will be
passed to set_ftrace_notrace in tracefs.
--func-opts
List of options allowed to set: call-graph - Display kernel
stack trace for function tracer. irq-info - Display irq
context info for function tracer.
-G, --graph-funcs=
Select function_graph tracer and set graph filter on the
given function (or a glob pattern). This is useful to trace
for functions executed from the given function. This can be
used more than once to specify multiple functions. It will be
passed to set_graph_function in tracefs.
-g, --nograph-funcs=
Select function_graph tracer and set graph notrace filter on
the given function (or a glob pattern). Like -G option, this
is useful for the function_graph tracer only and disables
tracing for function executed from the given function. This
can be used more than once to specify multiple functions. It
will be passed to set_graph_notrace in tracefs.
--graph-opts
List of options allowed to set: nosleep-time - Measure on-CPU
time only for function_graph tracer. noirqs - Ignore
functions that happen inside interrupt. verbose - Show
process names, PIDs, timestamps, etc. thresh=<n> - Setup
trace duration threshold in microseconds. depth=<n> - Set max
depth for function graph tracer to follow.
