On Wed, Aug 19, 2015 at 10:38:26AM +0200, Stephane Eranian wrote:
> This patch improves perf script by enabling printing of the
> branch stack via the 'brstack' argument to the field selection
> option -F. The option is off by default and operates only if the
> perf.data file has branch stack content.
Thanks that's very useful. I wanted that several times.
>
> +static void print_sample_brstack(union perf_event *event __maybe_unused,
> + struct perf_sample *sample,
> + struct thread *thread __maybe_unused,
> + struct perf_event_attr *attr __maybe_unused)
> +{
> + struct branch_stack *br = sample->branch_stack;
> + u64 i;
> +
> + if (!(br && br->nr))
> + return;
> +
> + for (i = 0; i < br->nr; i++) {
> + printf(" 0x%"PRIx64"/0x%"PRIx64" ", br->entries[i].from,
> br->entries[i].to);
Should print the various flags too. Also tip just added cycles information.
Also it would be good to resolve the addresses to symbol + offset
(and perhaps have support for srcline too).
-Andi
--
a...@linux.intel.com -- Speaking for myself only
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