diff options
| -rw-r--r-- | tools/perf/Documentation/perf-probe.txt | 7 | ||||
| -rw-r--r-- | tools/perf/util/probe-event.c | 15 |
2 files changed, 16 insertions, 6 deletions
diff --git a/tools/perf/Documentation/perf-probe.txt b/tools/perf/Documentation/perf-probe.txt index 81c3220e04f3..02bafce4b341 100644 --- a/tools/perf/Documentation/perf-probe.txt +++ b/tools/perf/Documentation/perf-probe.txt @@ -16,7 +16,7 @@ or or 'perf probe' --list or -'perf probe' [options] --line='FUNC[:RLN[+NUM|:RLN2]]|SRC:ALN[+NUM|:ALN2]' +'perf probe' [options] --line='LINE' or 'perf probe' [options] --vars='PROBEPOINT' @@ -128,13 +128,14 @@ LINE SYNTAX ----------- Line range is described by following syntax. - "FUNC[:RLN[+NUM|-RLN2]]|SRC[:ALN[+NUM|-ALN2]]" + "FUNC[@SRC][:RLN[+NUM|-RLN2]]|SRC[:ALN[+NUM|-ALN2]]" FUNC specifies the function name of showing lines. 'RLN' is the start line number from function entry line, and 'RLN2' is the end line number. As same as probe syntax, 'SRC' means the source file path, 'ALN' is start line number, and 'ALN2' is end line number in the file. It is also possible to specify how -many lines to show by using 'NUM'. +many lines to show by using 'NUM'. Moreover, 'FUNC@SRC' combination is good +for searching a specific function when several functions share same name. So, "source.c:100-120" shows lines between 100th to l20th in source.c file. And "func:10+20" shows 20 lines from 10th line of func function. LAZY MATCHING diff --git a/tools/perf/util/probe-event.c b/tools/perf/util/probe-event.c index 9d237e3cff5d..cbd76507a56f 100644 --- a/tools/perf/util/probe-event.c +++ b/tools/perf/util/probe-event.c @@ -595,11 +595,11 @@ static int parse_line_num(char **ptr, int *val, const char *what) * The line range syntax is described by: * * SRC[:SLN[+NUM|-ELN]] - * FNC[:SLN[+NUM|-ELN]] + * FNC[@SRC][:SLN[+NUM|-ELN]] */ int parse_line_range_desc(const char *arg, struct line_range *lr) { - char *range, *name = strdup(arg); + char *range, *file, *name = strdup(arg); int err; if (!name) @@ -649,7 +649,16 @@ int parse_line_range_desc(const char *arg, struct line_range *lr) } } - if (strchr(name, '.')) + file = strchr(name, '@'); + if (file) { + *file = '\0'; + lr->file = strdup(++file); + if (lr->file == NULL) { + err = -ENOMEM; + goto err; + } + lr->function = name; + } else if (strchr(name, '.')) lr->file = name; else lr->function = name; |