Re: Wrong Perf Backtraces

ahmadkhorrami <[email protected]>
Newsgroups org.kernel.vger.linux-trace-users
Message-ID <[email protected]>
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)");
lmpx.com only provides a reader for public news (NNTP) servers. It is not affiliated with the servers or forums shown here and is not responsible for the content of articles, which is written by their respective authors.