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authorArnaldo Carvalho de Melo <acme@redhat.com>2010-05-23 19:12:25 -0300
committerArnaldo Carvalho de Melo <acme@redhat.com>2010-05-23 22:35:07 -0300
commit44bf460649a9b91f291176097e9d7e846e8c001e (patch)
tree9ae7d7df29e058fc43e9ca8cee25ff9fc19a0973 /tools
parentc392c4c6dccf7c64c113b473c7eceedf25eddd51 (diff)
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perf annotate: Fix up usage of the build id cache
It was assuming that the cache was always available and also wasn't checking if the file found in the build id cache was just a kallsyms file, that is not supported by objdump for disassembly. Reported-by: Ingo Molnar <mingo@elte.hu> Cc: Frédéric Weisbecker <fweisbec@gmail.com> Cc: Mike Galbraith <efault@gmx.de> Cc: Paul Mackerras <paulus@samba.org> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> 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')
-rw-r--r--tools/perf/util/hist.c13
1 files changed, 11 insertions, 2 deletions
diff --git a/tools/perf/util/hist.c b/tools/perf/util/hist.c
index 682a6d88862..cbf7eae2ce0 100644
--- a/tools/perf/util/hist.c
+++ b/tools/perf/util/hist.c
@@ -990,6 +990,7 @@ int hist_entry__annotate(struct hist_entry *self, struct list_head *head)
struct map *map = self->ms.map;
struct dso *dso = map->dso;
char *filename = dso__build_id_filename(dso, NULL, 0);
+ bool free_filename = true;
char command[PATH_MAX * 2];
FILE *file;
int err = 0;
@@ -1001,11 +1002,19 @@ int hist_entry__annotate(struct hist_entry *self, struct list_head *head)
sym->name);
return -ENOMEM;
}
+ goto fallback;
+ } else if (readlink(filename, command, sizeof(command)) < 0 ||
+ strstr(command, "[kernel.kallsyms]") ||
+ access(filename, R_OK)) {
+ free(filename);
+fallback:
/*
- * If we don't have build-ids, well, lets hope that this
+ * If we don't have build-ids or the build-id file isn't in the
+ * cache, or is just a kallsyms file, well, lets hope that this
* DSO is the same as when 'perf record' ran.
*/
filename = dso->long_name;
+ free_filename = false;
}
if (dso->origin == DSO__ORIG_KERNEL) {
@@ -1045,7 +1054,7 @@ int hist_entry__annotate(struct hist_entry *self, struct list_head *head)
pclose(file);
out_free_filename:
- if (dso->has_build_id)
+ if (free_filename)
free(filename);
return err;
}