| perf-probe.txt (d4bbf7e7759afc172e2bfbc5c416324590049cdd) | perf-probe.txt (225466f1c2d816c33b4341008f45dfdc83a9f0cb) |
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| 1perf-probe(1) 2============= 3 4NAME 5---- 6perf-probe - Define new dynamic tracepoints 7 8SYNOPSIS --- 63 unchanged lines hidden (view full) --- 72 syntax is same as PROBE SYNTAX, but NO ARGs. 73 74--externs:: 75 (Only for --vars) Show external defined variables in addition to local 76 variables. 77 78-F:: 79--funcs:: | 1perf-probe(1) 2============= 3 4NAME 5---- 6perf-probe - Define new dynamic tracepoints 7 8SYNOPSIS --- 63 unchanged lines hidden (view full) --- 72 syntax is same as PROBE SYNTAX, but NO ARGs. 73 74--externs:: 75 (Only for --vars) Show external defined variables in addition to local 76 variables. 77 78-F:: 79--funcs:: |
| 80 Show available functions in given module or kernel. | 80 Show available functions in given module or kernel. With -x/--exec, 81 can also list functions in a user space executable / shared library. |
| 81 82--filter=FILTER:: 83 (Only for --vars and --funcs) Set filter. FILTER is a combination of glob 84 pattern, see FILTER PATTERN for detail. 85 Default FILTER is "!__k???tab_* & !__crc_*" for --vars, and "!_*" 86 for --funcs. 87 If several filters are specified, only the last filter is used. 88 --- 4 unchanged lines hidden (view full) --- 93-n:: 94--dry-run:: 95 Dry run. With this option, --add and --del doesn't execute actual 96 adding and removal operations. 97 98--max-probes:: 99 Set the maximum number of probe points for an event. Default is 128. 100 | 82 83--filter=FILTER:: 84 (Only for --vars and --funcs) Set filter. FILTER is a combination of glob 85 pattern, see FILTER PATTERN for detail. 86 Default FILTER is "!__k???tab_* & !__crc_*" for --vars, and "!_*" 87 for --funcs. 88 If several filters are specified, only the last filter is used. 89 --- 4 unchanged lines hidden (view full) --- 94-n:: 95--dry-run:: 96 Dry run. With this option, --add and --del doesn't execute actual 97 adding and removal operations. 98 99--max-probes:: 100 Set the maximum number of probe points for an event. Default is 128. 101 |
| 102-x:: 103--exec=PATH:: 104 Specify path to the executable or shared library file for user 105 space tracing. Can also be used with --funcs option. 106 |
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| 101PROBE SYNTAX 102------------ 103Probe points are defined by following syntax. 104 105 1) Define event based on function name 106 [EVENT=]FUNC[@SRC][:RLN|+OFFS|%return|;PTN] [ARG ...] 107 108 2) Define event based on source file with line number --- 68 unchanged lines hidden (view full) --- 177 ./perf probe 'schedule;update_rq_clock*' 178 or 179 ./perf probe --add='schedule;update_rq_clock*' 180 181Delete all probes on schedule(). 182 183 ./perf probe --del='schedule*' 184 | 107PROBE SYNTAX 108------------ 109Probe points are defined by following syntax. 110 111 1) Define event based on function name 112 [EVENT=]FUNC[@SRC][:RLN|+OFFS|%return|;PTN] [ARG ...] 113 114 2) Define event based on source file with line number --- 68 unchanged lines hidden (view full) --- 183 ./perf probe 'schedule;update_rq_clock*' 184 or 185 ./perf probe --add='schedule;update_rq_clock*' 186 187Delete all probes on schedule(). 188 189 ./perf probe --del='schedule*' 190 |
| 191Add probes at zfree() function on /bin/zsh |
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| 185 | 192 |
| 193 ./perf probe -x /bin/zsh zfree 194 195Add probes at malloc() function on libc 196 197 ./perf probe -x /lib/libc.so.6 malloc 198 |
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| 186SEE ALSO 187-------- 188linkperf:perf-trace[1], linkperf:perf-record[1] | 199SEE ALSO 200-------- 201linkperf:perf-trace[1], linkperf:perf-record[1] |