Messages in this thread Patch in this message | | | From | Akihiro Nagai <> | Subject | [PATCH -tip v2 6/6] perf script: add option resolving vmlinux path | Date | Sun, 17 Jul 2011 18:31:15 +0900 |
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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
# perf script -f ip,dso ffffffff81467612 irq_return ([kernel.kallsyms]) ffffffff81467612 irq_return ([kernel.kallsyms]) 7f24fc02a6b3 _start (/lib64/ld-2.14.so) [snip]
With --show-kernel-path option
# perf script -f ip,dso --show-kernel-path ffffffff81467612 irq_return (/lib/modules/3.0.0-rc6-tip+/build/vmlinux) ffffffff81467612 irq_return (/lib/modules/3.0.0-rc6-tip+/build/vmlinux) 7f24fc02a6b3 _start (/lib64/ld-2.14.so) [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 | 2 ++ tools/perf/util/map.c | 7 +++++-- tools/perf/util/session.c | 2 ++ tools/perf/util/symbol.c | 1 + tools/perf/util/symbol.h | 1 + 6 files changed, 14 insertions(+), 2 deletions(-)
diff --git a/tools/perf/Documentation/perf-script.txt b/tools/perf/Documentation/perf-script.txt index ee4d477..5383671 100644 --- a/tools/perf/Documentation/perf-script.txt +++ b/tools/perf/Documentation/perf-script.txt @@ -188,6 +188,9 @@ OPTIONS CPUs are specified with -: 0-2. Default is to report samples on all CPUs. +--show-kernel-path:: + Try to resolve the path of [kernel.kallsyms] + 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 fd68185..0d04788 100644 --- a/tools/perf/builtin-script.c +++ b/tools/perf/builtin-script.c @@ -1099,6 +1099,8 @@ static const struct option options[] = { "addr,offs", parse_output_fields), OPT_STRING('c', "cpu", &cpu_list, "cpu", "list of cpus to profile"), + OPT_BOOLEAN('\0', "show-kernel-path", &show_kernel_path, + "Show the path of [kernel.kallsyms]"), OPT_END() }; diff --git a/tools/perf/util/map.c b/tools/perf/util/map.c index dddc0f3..1645967 100644 --- a/tools/perf/util/map.c +++ b/tools/perf/util/map.c @@ -204,9 +204,12 @@ void map__print_dsoname(struct map *self) { const char *dsoname; - if (self && self->dso && self->dso->name) + if (self && self->dso && (self->dso->name || self->dso->long_name)) { + if (show_kernel_path && self->dso->long_name) + dsoname = self->dso->long_name; + else if (self->dso->name) dsoname = self->dso->name; - else + } else dsoname = "[unknown]"; printf("%s", dsoname); diff --git a/tools/perf/util/session.c b/tools/perf/util/session.c index 3728e67..34c5887 100644 --- a/tools/perf/util/session.c +++ b/tools/perf/util/session.c @@ -14,6 +14,8 @@ #include "util.h" #include "cpumap.h" +bool show_kernel_path; + static int perf_session__open(struct perf_session *self, bool force) { struct stat input_stat; diff --git a/tools/perf/util/symbol.c b/tools/perf/util/symbol.c index abfecf6..3356d6e 100644 --- a/tools/perf/util/symbol.c +++ b/tools/perf/util/symbol.c @@ -41,6 +41,7 @@ static int dso__load_guest_kernel_sym(struct dso *dso, struct map *map, symbol_filter_t filter); static int vmlinux_path__nr_entries; static char **vmlinux_path; +bool show_kernel_path; struct symbol_conf symbol_conf = { .exclude_other = true, diff --git a/tools/perf/util/symbol.h b/tools/perf/util/symbol.h index 554b2fe..88000e5 100644 --- a/tools/perf/util/symbol.h +++ b/tools/perf/util/symbol.h @@ -96,6 +96,7 @@ struct symbol_conf { }; extern struct symbol_conf symbol_conf; +extern bool show_kernel_path; static inline void *symbol__priv(struct symbol *sym) {
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