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Date: Sun, 17 Jul 2011 10:36:40 -0600 From: David Ahern <dsahern@...il.com> To: Akihiro Nagai <akihiro.nagai.hw@...achi.com> CC: Arnaldo Carvalho de Melo <acme@...radead.org>, Ingo Molnar <mingo@...e.hu>, Peter Zijlstra <peterz@...radead.org>, Frederic Weisbecker <fweisbec@...il.com>, linux-kernel@...r.kernel.org, Masami Hiramatsu <masami.hiramatsu.pt@...achi.com>, yrl.pp-manager.tt@...achi.com, Paul Mackerras <paulus@...ba.org> Subject: Re: [PATCH -tip v2 6/6] perf script: add option resolving vmlinux path On 07/17/2011 03:31 AM, Akihiro Nagai wrote: > 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@...achi.com> > Cc: Peter Zijlstra <peterz@...radead.org> > Cc: Frederic Weisbecker <fweisbec@...il.com> > Cc: Paul Mackerras <paulus@...ba.org> > Cc: Ingo Molnar <mingo@...e.hu> > Cc: Arnaldo Carvalho de Melo <acme@...radead.org> > Cc: David Ahern <dsahern@...il.com> > Cc: Masami Hiramatsu <masami.hiramatsu.pt@...achi.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; declared twice. See above in session.c. I suggest removing the one in session.c David > > 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) > { > -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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