diff options
| author | Arnaldo Carvalho de Melo <acme@redhat.com> | 2011-02-23 17:08:59 +0300 |
|---|---|---|
| committer | Arnaldo Carvalho de Melo <acme@redhat.com> | 2011-02-23 18:13:39 +0300 |
| commit | 170ae6bc24e1d7f9bd921a484ec9ea2825497970 (patch) | |
| tree | 1bb087d36ced6cca9beabee151f8095617ebfd48 /tools/perf | |
| parent | 9848caf26dafefcec7881f0e3c35fc81c454ba59 (diff) | |
| download | linux-170ae6bc24e1d7f9bd921a484ec9ea2825497970.tar.xz | |
perf annotate: Show better message when no vmlinux is found
In both --tui and --stdio, in 'annotate', 'top', 'report' when trying to
annotate a kernel symbol having just access to a kallsyms file, that
doesn't have the DWARF info needed for annotation.
Suggested-by: Ingo Molnar <mingo@elte.hu>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
Cc: Tom Zanussi <tzanussi@gmail.com>
LKML-Reference: <new-submission>
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Diffstat (limited to 'tools/perf')
| -rw-r--r-- | tools/perf/util/annotate.c | 15 | ||||
| -rw-r--r-- | tools/perf/util/ui/browsers/hists.c | 8 |
2 files changed, 13 insertions, 10 deletions
diff --git a/tools/perf/util/annotate.c b/tools/perf/util/annotate.c index 70ec422ddb64..0d0830c98cd7 100644 --- a/tools/perf/util/annotate.c +++ b/tools/perf/util/annotate.c @@ -295,12 +295,23 @@ fallback: } if (dso->origin == DSO__ORIG_KERNEL) { + char bf[BUILD_ID_SIZE * 2 + 16] = " with build id "; + char *build_id_msg = NULL; + if (dso->annotate_warned) goto out_free_filename; + + if (dso->has_build_id) { + build_id__sprintf(dso->build_id, + sizeof(dso->build_id), bf + 15); + build_id_msg = bf; + } err = -ENOENT; dso->annotate_warned = 1; - pr_err("Can't annotate %s: No vmlinux file was found in the " - "path\n", sym->name); + pr_err("Can't annotate %s: No vmlinux file%s was found in the " + "path.\nPlease use 'perf buildid-cache -av vmlinux' or " + "--vmlinux vmlinux.\n", + sym->name, build_id_msg ?: ""); goto out_free_filename; } diff --git a/tools/perf/util/ui/browsers/hists.c b/tools/perf/util/ui/browsers/hists.c index 294b49538522..497b3c4076a3 100644 --- a/tools/perf/util/ui/browsers/hists.c +++ b/tools/perf/util/ui/browsers/hists.c @@ -924,14 +924,6 @@ int hists__browse(struct hists *self, const char *helpline, if (choice == annotate) { struct hist_entry *he; do_annotate: - if (browser->selection->map->dso->origin == DSO__ORIG_KERNEL) { - browser->selection->map->dso->annotate_warned = 1; - ui_helpline__puts("No vmlinux file found, can't " - "annotate with just a " - "kallsyms file"); - continue; - } - he = hist_browser__selected_entry(browser); if (he == NULL) continue; |