Re: Wrong Perf Backtraces

ahmadkhorrami <ahmadkhorrami@xxxxxxxx> · Sun, 29 Mar 2020 16:22:27 +0430

Hi,

Thanks. Still no change. Sorry, I forgot to say that you should 

initialize the "perfCMD" variable to your perf binary path.

Regards.

On 2020-03-29 15:49, Jiri Olsa wrote:


On Sun, Mar 29, 2020 at 05:46:57AM +0430, ahmadkhorrami wrote:


Hi,

Each line is correct. I mean addresses match symbols. But some callers 

and

callees do not match. Perhaps callchain misses some callers in 

between.

Regards


right, I missed another case.. how about the change below?
your script is silent now on my data

jirka

---

diff --git a/tools/perf/util/evsel_fprintf.c 

b/tools/perf/util/evsel_fprintf.c

index 3b4842840db0..fc4fb88937ed 100644
--- a/tools/perf/util/evsel_fprintf.c
+++ b/tools/perf/util/evsel_fprintf.c

@@ -173,6 +173,8 @@ int sample__fprintf_callchain(struct perf_sample 

*sample, int left_alignment,


if (print_srcline)
printed += map__fprintf_srcline(map, addr, "\n  ", fp);
+            else if (node->srcline)
+                printed += fprintf(fp, " %s", node->srcline);

if (sym && sym->inlined)
printed += fprintf(fp, " (inlined)");



