perf callchain: Factor out adding new call chain entries
Move the code to resolve and add a new callchain entry into a new
add_callchain_ip function. This will be used in the next patches to add
LBRs too.
No change in behavior.
Signed-off-by: Andi Kleen <ak@linux.intel.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Link: http://lkml.kernel.org/r/1415844328-4884-2-git-send-email-andi@firstfloor.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
diff --git a/tools/perf/util/machine.c b/tools/perf/util/machine.c
index 52e9490..84390ee 100644
--- a/tools/perf/util/machine.c
+++ b/tools/perf/util/machine.c
@@ -1381,6 +1381,34 @@
return mi;
}
+static int add_callchain_ip(struct thread *thread,
+ struct symbol **parent,
+ struct addr_location *root_al,
+ int cpumode,
+ u64 ip)
+{
+ struct addr_location al;
+
+ al.filtered = 0;
+ al.sym = NULL;
+ thread__find_addr_location(thread, cpumode, MAP__FUNCTION,
+ ip, &al);
+ if (al.sym != NULL) {
+ if (sort__has_parent && !*parent &&
+ symbol__match_regex(al.sym, &parent_regex))
+ *parent = al.sym;
+ else if (have_ignore_callees && root_al &&
+ symbol__match_regex(al.sym, &ignore_callees_regex)) {
+ /* Treat this symbol as the root,
+ forgetting its callees. */
+ *root_al = al;
+ callchain_cursor_reset(&callchain_cursor);
+ }
+ }
+
+ return callchain_cursor_append(&callchain_cursor, ip, al.map, al.sym);
+}
+
struct branch_info *sample__resolve_bstack(struct perf_sample *sample,
struct addr_location *al)
{
@@ -1427,7 +1455,6 @@
for (i = 0; i < chain_nr; i++) {
u64 ip;
- struct addr_location al;
if (callchain_param.order == ORDER_CALLEE)
j = i;
@@ -1464,24 +1491,10 @@
continue;
}
- al.filtered = 0;
- thread__find_addr_location(thread, cpumode,
- MAP__FUNCTION, ip, &al);
- if (al.sym != NULL) {
- if (sort__has_parent && !*parent &&
- symbol__match_regex(al.sym, &parent_regex))
- *parent = al.sym;
- else if (have_ignore_callees && root_al &&
- symbol__match_regex(al.sym, &ignore_callees_regex)) {
- /* Treat this symbol as the root,
- forgetting its callees. */
- *root_al = al;
- callchain_cursor_reset(&callchain_cursor);
- }
- }
-
- err = callchain_cursor_append(&callchain_cursor,
- ip, al.map, al.sym);
+ err = add_callchain_ip(thread, parent, root_al,
+ cpumode, ip);
+ if (err == -EINVAL)
+ break;
if (err)
return err;
}