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perf script: Add option resolving vmlinux path

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Add the option get the path of [kernel.kallsyms].
Specify '--show-kernel-path' option to use this function.
This patch enables other applications to use this output easily.

Without --show-kernel-path  option

ffffffff81467612 irq_return ([kernel.kallsyms])
ffffffff81467612 irq_return ([kernel.kallsyms])
    7f24fc02a6b3 _start (/lib64/ld-2.14.so)
[snip]

With --show-kernel-path option

ffffffff81467612 irq_return (/lib/modules/3.2.0+/build/vmlinux)
ffffffff81467612 irq_return (/lib/modules/3.2.0+/build/vmlinux)
    7f24fc02a6b3 _start (/lib64/ld-2.14.so)
[snip]

Cc: David Ahern <dsahern@gmail.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: yrl.pp-manager.tt@hitachi.com
Link: http://lkml.kernel.org/r/20120130044320.2384.73322.stgit@linux3
Signed-off-by: Akihiro Nagai <akihiro.nagai.hw@hitachi.com>
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
This commit is contained in:
Akihiro Nagai 2012-01-30 13:43:20 +09:00 committed by Arnaldo Carvalho de Melo
parent a978f2ab41
commit 0bc8d20580
4 changed files with 13 additions and 3 deletions
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3
tools/perf/Documentation/perf-script.txt
View file

@ -200,6 +200,9 @@ OPTIONS
It currently includes: cpu and numa topology of the host system.
It can only be used with the perf script report mode.
--show-kernel-path::
Try to resolve the path of [kernel.kallsyms]
SEE ALSO
--------
linkperf:perf-record[1], linkperf:perf-script-perl[1],

3
tools/perf/builtin-script.c
View file

@ -1155,6 +1155,9 @@ static const struct option options[] = {
"only display events for these comms"),
OPT_BOOLEAN('I', "show-info", &show_full_info,
"display extended information from perf.data file"),
OPT_BOOLEAN('\0', "show-kernel-path", &symbol_conf.show_kernel_path,
"Show the path of [kernel.kallsyms]"),
OPT_END()
};

9
tools/perf/util/map.c
View file

@ -216,9 +216,12 @@ size_t map__fprintf_dsoname(struct map *map, FILE *fp)
{
const char *dsoname;
if (map && map->dso && map->dso->name)
dsoname = map->dso->name;
else
if (map && map->dso && (map->dso->name || map->dso->long_name)) {
if (symbol_conf.show_kernel_path && map->dso->long_name)
dsoname = map->dso->long_name;
else if (map->dso->name)
dsoname = map->dso->name;
} else
dsoname = "[unknown]";
return fprintf(fp, "%s", dsoname);

1
tools/perf/util/symbol.h
View file

@ -70,6 +70,7 @@ struct symbol_conf {
unsigned short priv_size;
unsigned short nr_events;
bool try_vmlinux_path,
show_kernel_path,
use_modules,
sort_by_name,
show_nr_samples,