diff options
Diffstat (limited to 'tools/perf/builtin-probe.c')
| -rw-r--r-- | tools/perf/builtin-probe.c | 76 |
1 files changed, 63 insertions, 13 deletions
diff --git a/tools/perf/builtin-probe.c b/tools/perf/builtin-probe.c index ffdd3fe87b4..1d3a99ea5ce 100644 --- a/tools/perf/builtin-probe.c +++ b/tools/perf/builtin-probe.c @@ -55,11 +55,13 @@ static struct { bool need_dwarf; bool list_events; bool force_add; + bool show_lines; int nr_probe; struct probe_point probes[MAX_PROBES]; struct strlist *dellist; struct perf_session *psession; struct map *kmap; + struct line_range line_range; } session; @@ -116,6 +118,15 @@ static int opt_del_probe_event(const struct option *opt __used, return 0; } +static int opt_show_lines(const struct option *opt __used, + const char *str, int unset __used) +{ + if (str) + parse_line_range_desc(str, &session.line_range); + INIT_LIST_HEAD(&session.line_range.line_list); + session.show_lines = true; + return 0; +} /* Currently just checking function name from symbol map */ static void evaluate_probe_point(struct probe_point *pp) { @@ -144,6 +155,7 @@ static const char * const probe_usage[] = { "perf probe [<options>] --add 'PROBEDEF' [--add 'PROBEDEF' ...]", "perf probe [<options>] --del '[GROUP:]EVENT' ...", "perf probe --list", + "perf probe --line 'LINEDESC'", NULL }; @@ -182,9 +194,32 @@ static const struct option options[] = { opt_add_probe_event), OPT_BOOLEAN('f', "force", &session.force_add, "forcibly add events" " with existing name"), +#ifndef NO_LIBDWARF + OPT_CALLBACK('L', "line", NULL, + "FUNC[:RLN[+NUM|:RLN2]]|SRC:ALN[+NUM|:ALN2]", + "Show source code lines.", opt_show_lines), +#endif OPT_END() }; +/* Initialize symbol maps for vmlinux */ +static void init_vmlinux(void) +{ + symbol_conf.sort_by_name = true; + if (symbol_conf.vmlinux_name == NULL) + symbol_conf.try_vmlinux_path = true; + else + pr_debug("Use vmlinux: %s\n", symbol_conf.vmlinux_name); + if (symbol__init() < 0) + die("Failed to init symbol map."); + session.psession = perf_session__new(NULL, O_WRONLY, false); + if (session.psession == NULL) + die("Failed to init perf_session."); + session.kmap = session.psession->vmlinux_maps[MAP__FUNCTION]; + if (!session.kmap) + die("Could not find kernel map.\n"); +} + int cmd_probe(int argc, const char **argv, const char *prefix __used) { int i, ret; @@ -203,7 +238,8 @@ int cmd_probe(int argc, const char **argv, const char *prefix __used) parse_probe_event_argv(argc, argv); } - if ((!session.nr_probe && !session.dellist && !session.list_events)) + if ((!session.nr_probe && !session.dellist && !session.list_events && + !session.show_lines)) usage_with_options(probe_usage, options); if (debugfs_valid_mountpoint(debugfs_path) < 0) @@ -215,10 +251,34 @@ int cmd_probe(int argc, const char **argv, const char *prefix __used) " --add/--del.\n"); usage_with_options(probe_usage, options); } + if (session.show_lines) { + pr_warning(" Error: Don't use --list with --line.\n"); + usage_with_options(probe_usage, options); + } show_perf_probe_events(); return 0; } +#ifndef NO_LIBDWARF + if (session.show_lines) { + if (session.nr_probe != 0 || session.dellist) { + pr_warning(" Error: Don't use --line with" + " --add/--del.\n"); + usage_with_options(probe_usage, options); + } + init_vmlinux(); + fd = open_vmlinux(); + if (fd < 0) + die("Could not open debuginfo file."); + ret = find_line_range(fd, &session.line_range); + if (ret <= 0) + die("Source line is not found.\n"); + close(fd); + show_line_range(&session.line_range); + return 0; + } +#endif + if (session.dellist) { del_trace_kprobe_events(session.dellist); strlist__delete(session.dellist); @@ -226,18 +286,8 @@ int cmd_probe(int argc, const char **argv, const char *prefix __used) return 0; } - /* Initialize symbol maps for vmlinux */ - symbol_conf.sort_by_name = true; - if (symbol_conf.vmlinux_name == NULL) - symbol_conf.try_vmlinux_path = true; - if (symbol__init() < 0) - die("Failed to init symbol map."); - session.psession = perf_session__new(NULL, O_WRONLY, false); - if (session.psession == NULL) - die("Failed to init perf_session."); - session.kmap = session.psession->vmlinux_maps[MAP__FUNCTION]; - if (!session.kmap) - die("Could not find kernel map.\n"); + /* Add probes */ + init_vmlinux(); if (session.need_dwarf) #ifdef NO_LIBDWARF |