Messages in this thread Patch in this message | | | From | Akihiro Nagai <> | Subject | [PATCH -tip 3/4] perf script: add the option to show the offset of symbols | Date | Tue, 28 Jun 2011 16:40:44 +0900 |
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Add the option '--show-symbol-offset' to show the offset from the symbols in the output of perf-script. We can get the more detailed address information.
Output sample: # perf script -f ip,addr,sym --show-symbol-offset 301ec016b0 ffffffff81467612 irq_return+0x0 301ec016b0 _start+0x0 ffffffff81467612 irq_return+0x0 301ec04b70 _dl_start+0x0 301ec016b3 _start+0x3 301ec04b70 _dl_start+0x0 ffffffff81467612 irq_return+0x0 301ec04b96 _dl_start+0x26 ffffffff81467612 irq_return+0x0 301ec04b9d _dl_start+0x2d ffffffff81467612 irq_return+0x0 301ec04c0d _dl_start+0x9d 301ec04beb _dl_start+0x7b 301ec04bf0 _dl_start+0x80 301ec04c11 _dl_start+0xa1 [snip]
Signed-off-by: Akihiro Nagai <akihiro.nagai.hw@hitachi.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Paul Mackerras <paulus@samba.org> Cc: Ingo Molnar <mingo@elte.hu> Cc: Arnaldo Carvalho de Melo <acme@infradead.org> Cc: David Ahern <dsahern@gmail.com> Cc: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com> ---
tools/perf/Documentation/perf-script.txt | 3 +++ tools/perf/builtin-script.c | 20 ++++++++++++++------ tools/perf/util/session.c | 16 ++++++++++------ tools/perf/util/session.h | 3 ++- 4 files changed, 29 insertions(+), 13 deletions(-)
diff --git a/tools/perf/Documentation/perf-script.txt b/tools/perf/Documentation/perf-script.txt index c6068cb..39c4721 100644 --- a/tools/perf/Documentation/perf-script.txt +++ b/tools/perf/Documentation/perf-script.txt @@ -182,6 +182,9 @@ OPTIONS --hide-call-graph:: When printing symbols do not display call chain. +--show-symbol-offset:: + Show the offset of the symbols. + SEE ALSO -------- linkperf:perf-record[1], linkperf:perf-script-perl[1], diff --git a/tools/perf/builtin-script.c b/tools/perf/builtin-script.c index 2d68086..f9b7047 100644 --- a/tools/perf/builtin-script.c +++ b/tools/perf/builtin-script.c @@ -21,6 +21,7 @@ static u64 last_timestamp; static u64 nr_unordered; extern const struct option record_options[]; static bool no_callchain; +static bool show_symbol_offset; enum perf_output_field { PERF_OUTPUT_COMM = 1U << 0, @@ -324,6 +325,7 @@ static void print_sample_addr(union perf_event *event, struct addr_location al; u8 cpumode = event->header.misc & PERF_RECORD_MISC_CPUMODE_MASK; const char *symname, *dsoname; + unsigned long offset; printf("%16" PRIx64, sample->addr); @@ -346,12 +348,15 @@ static void print_sample_addr(union perf_event *event, al.sym = map__find_symbol(al.map, al.addr, NULL); if (PRINT_FIELD(SYM)) { - if (al.sym && al.sym->name) + printf(" "); + if (al.sym && al.sym->name) { symname = al.sym->name; - else - symname = ""; - - printf(" %16s", symname); + offset = al.addr - al.sym->start; + if (show_symbol_offset) + printf("%16s+0x%lx", symname, offset); + else + printf("%16s", symname); + } } if (PRINT_FIELD(DSO)) { @@ -390,7 +395,8 @@ static void process_event(union perf_event *event __unused, else printf("\n"); perf_session__print_ip(event, sample, session, - PRINT_FIELD(SYM), PRINT_FIELD(DSO)); + PRINT_FIELD(SYM), PRINT_FIELD(DSO), + show_symbol_offset); } printf("\n"); @@ -1084,6 +1090,8 @@ static const struct option options[] = { OPT_CALLBACK('f', "fields", NULL, "str", "comma separated output fields prepend with 'type:'. Valid types: hw,sw,trace,raw. Fields: comm,tid,pid,time,cpu,event,trace,ip,sym,dso,addr", parse_output_fields), + OPT_BOOLEAN('\0', "show-symbol-offset", &show_symbol_offset, + "Show the offset of the symbol."), OPT_END() }; diff --git a/tools/perf/util/session.c b/tools/perf/util/session.c index 632266f..bb522ed 100644 --- a/tools/perf/util/session.c +++ b/tools/perf/util/session.c @@ -1205,10 +1205,11 @@ struct perf_evsel *perf_session__find_first_evtype(struct perf_session *session, void perf_session__print_ip(union perf_event *event, struct perf_sample *sample, struct perf_session *session, - int print_sym, int print_dso) + int print_sym, int print_dso, int print_offset) { struct addr_location al; const char *symname, *dsoname; + unsigned long offset; struct callchain_cursor *cursor = &session->callchain_cursor; struct callchain_cursor_node *node; @@ -1259,12 +1260,15 @@ void perf_session__print_ip(union perf_event *event, } else { printf("%16" PRIx64, sample->ip); if (print_sym) { - if (al.sym && al.sym->name) + printf(" "); + if (al.sym && al.sym->name) { symname = al.sym->name; - else - symname = ""; - - printf(" %s", symname); + offset = al.addr - al.sym->start; + if (print_offset) + printf("%s+0x%lx", symname, offset); + else + printf("%s", symname); + } } if (print_dso) { diff --git a/tools/perf/util/session.h b/tools/perf/util/session.h index de4178d..8187e68 100644 --- a/tools/perf/util/session.h +++ b/tools/perf/util/session.h @@ -170,6 +170,7 @@ struct perf_evsel *perf_session__find_first_evtype(struct perf_session *session, void perf_session__print_ip(union perf_event *event, struct perf_sample *sample, struct perf_session *session, - int print_sym, int print_dso); + int print_sym, int print_dso, + int print_offset); #endif /* __PERF_SESSION_H */
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