[PATCH v1 3/4] perf report: Show inline stack in stdio mode

Jin Yao
2016-11-29T06:58:03Z

If the address belongs to an inlined function, the source information
back to the first non-inlined function will be printed.

For example:

0.05% test2 test2 [.] main
|
---/home/jinyao/perf-dev/test/test2.c:27 (inline)
/home/jinyao/perf-dev/test/test2.c:35 (inline)
/home/jinyao/perf-dev/test/test2.c:45 (inline)
/home/jinyao/perf-dev/test/test2.c:61 (inline)

The tag "inline" indicates these items are the entries in inline stack.

Signed-off-by: Jin Yao <yao.jin@linux.intel.com>
---
tools/perf/ui/stdio/hist.c | 56 +++++++++++++++++++++++++++++++++++++++++++++-
1 file changed, 55 insertions(+), 1 deletion(-)

diff --git a/tools/perf/ui/stdio/hist.c b/tools/perf/ui/stdio/hist.c
index 668f4ae..e74eda0 100644
--- a/tools/perf/ui/stdio/hist.c
+++ b/tools/perf/ui/stdio/hist.c
@@ -400,6 +400,53 @@ static size_t hist_entry_callchain__fprintf(struct hist_entry *he,
return 0;
}

+static size_t hist_entry_inline__fprintf(struct hist_entry *he,
+ int left_margin,
+ FILE *fp)
+{
+ struct dso *dso;
+ struct inline_node *node;
+ struct inline_list *ilist;
+ int ret = 0, i = 0;
+
+ if (he->ms.map == NULL)
+ return 0;
+
+ dso = he->ms.map->dso;
+ if (dso == NULL)
+ return 0;
+
+ if (dso->kernel != DSO_TYPE_USER)
+ return 0;
+
+ node = get_inline_node(dso, map__rip_2objdump(he->ms.map, he->ip));
+ if (node == NULL)
+ return 0;
+
+ ret += callchain__fprintf_left_margin(fp, left_margin);
+ ret += fprintf(fp, "|\n");
+ ret += callchain__fprintf_left_margin(fp, left_margin);
+ ret += fprintf(fp, "---");
+ left_margin += 3;
+
+ list_for_each_entry(ilist, &node->val, list) {
+ if (ilist->filename != NULL) {
+ if (i++ > 0)
+ ret = callchain__fprintf_left_margin(fp,
+ left_margin);
+ ret += fprintf(fp, "%s:%d (inline)",
+ ilist->filename, ilist->line_nr);
+ ret += fprintf(fp, "\n");
+ }
+ }
+
+ if (i > 0)
+ ret += fprintf(fp, "\n");
+
+ free_inline_node(node);
+ return ret;
+}
+
int __hist_entry__snprintf(struct hist_entry *he, struct perf_hpp *hpp,
struct perf_hpp_list *hpp_list)
{
@@ -529,6 +576,7 @@ static int hist_entry__fprintf(struct hist_entry *he, size_t size,
bool use_callchain)
{
int ret;
+ int callchain_ret = 0;
struct perf_hpp hpp = {
.buf = bf,
.size = size,
@@ -547,7 +595,13 @@ static int hist_entry__fprintf(struct hist_entry *he, size_t size,
ret = fprintf(fp, "%s\n", bf);

if (use_callchain)
- ret += hist_entry_callchain__fprintf(he, total_period, 0, fp);
+ callchain_ret = hist_entry_callchain__fprintf(he, total_period,
+ 0, fp);
+
+ if ((callchain_ret == 0) && symbol_conf.show_inline)
+ ret += hist_entry_inline__fprintf(he, 0, fp);
+ else
+ ret += callchain_ret;

return ret;
}
--
2.7.4