Lines Matching refs:probe
1 perf-probe(1)
6 perf-probe - Define new dynamic tracepoints
11 'perf probe' [options] --add='PROBE' [...]
13 'perf probe' [options] PROBE
15 'perf probe' [options] --del='[GROUP:]EVENT' [...]
17 'perf probe' --list[=[GROUP:]EVENT]
19 'perf probe' [options] --line='LINE'
21 'perf probe' [options] --vars='PROBEPOINT'
23 'perf probe' [options] --funcs
25 'perf probe' [options] --definition='PROBE' [...]
44 Specify module name in which perf-probe searches probe points
45 or lines. If a path of module file is passed, perf-probe
46 treat it as an offline module (this means you can add a probe on
65 Define a probe event (see PROBE SYNTAX for detail).
69 Delete probe events. This accepts glob wildcards('*', '?') and character
74 List up current probe events. This can also accept filtering patterns of
86 Show available local variables at given probe point. The argument
105 Show trace-event definition converted from given probe-event instead
131 Set the maximum number of probe points for an event. Default is 128.
151 In absence of -m/-x options, perf probe checks if the first argument after
152 the options is an absolute path name. If its an absolute path, perf probe
153 uses it as a target module/target user space binary to probe.
173 …tion name. You can also specify a group name by 'GROUP', if omitted, set 'probe' is used for kprob…
176 …hing pattern (see LAZY MATCHING). Note that ';PTN' must be the end of the probe point definition. …
177 It is also possible to specify a probe point by the source line number or lazy matching by using 'S…
178 'ARG' specifies the arguments of this probe point, (see PROBE ARGUMENT).
188 In the probe syntax, '=', '@', '+', ':' and ';' are treated as a special character. You can use a b…
189 This is useful if you need to probe on a specific versioned symbols, like @GLIBC_... suffixes, or a…
195 Each probe argument follows below syntax.
200 …local variables (including function parameters) which can access at given probe point. '$params' i…
201 'TYPE' casts the type of this argument (optional). If omitted, perf probe automatically set the typ…
206 …r 'u' to specify only signedness and leave its size auto-detected by perf probe. Moreover, you can…
220 probe syntax, 'SRC' means the source file path, 'ALN' is start line number,
233 This provides some sort of flexibility and robustness to probe point definitions against minor code…
241 With --filter "foo* | bar*", perf probe -V shows variables which start with "foo" or "bar".
242 …With --filter "!foo* & *bar", perf probe -V shows variables which don't start with "foo" and end w…
248 ./perf probe --line schedule
250 Add a probe on schedule() function 12th line with recording cpu local variable:
252 ./perf probe schedule:12 cpu
254 ./perf probe --add='schedule:12 cpu'
258 ./perf probe schedule*
260 ./perf probe --add='schedule*'
264 ./perf probe 'schedule;update_rq_clock*'
266 ./perf probe --add='schedule;update_rq_clock*'
270 ./perf probe --del='schedule*'
274 ./perf probe -x /bin/zsh zfree or ./perf probe /bin/zsh zfree
278 ./perf probe -x /lib/libc.so.6 malloc or ./perf probe /lib/libc.so.6 malloc
282 ./perf probe --target-ns <target pid> -x /lib64/libc.so.6 malloc
284 Add a USDT probe to a target process running in a different mount namespace
286 …./perf probe --target-ns <target pid> -x /usr/lib/jvm/java-1.8.0-openjdk-1.8.0.121-0.b13.el7_3.x86…
288 Add a probe on specific versioned symbol by backslash escape
290 ./perf probe -x /lib64/libc-2.25.so 'malloc_get_state\@GLIBC_2.2.5'
292 Add a probe in a source file using special characters by backslash escape
294 ./perf probe -x /opt/test/a.out 'foo\+bar.c:4'