On Thu, Feb 27, 2014 at 08:22:26PM -0800, Andi Kleen wrote:
> From: Andi Kleen <a...@linux.intel.com>
>
SNIP
> +
> static int machine__resolve_callchain_sample(struct machine *machine,
> struct thread *thread,
> struct ip_callchain *chain,
> + struct branch_stack *branch,
> struct symbol **parent,
> struct addr_location *root_al,
> int max_stack)
> @@ -1283,17 +1365,73 @@ static int machine__resolve_callchain_sample(struct
> machine *machine,
> int chain_nr = min(max_stack, (int)chain->nr);
> int i;
> int err;
> + int first_call = 0;
>
> callchain_cursor_reset(&callchain_cursor);
>
> + /*
> + * Add branches to call stack for easier browsing. This gives
> + * more context for a sample than just the callers.
> + *
> + * This uses individual histograms of paths compared to the
> + * aggregated histograms the normal LBR mode uses.
> + *
> + * Limitations for now:
> + * - No extra filters
> + * - No annotations (should annotate somehow)
> + */
> +
> + if (branch->nr > PERF_MAX_BRANCH_DEPTH) {
> + pr_warning("corrupted branch chain. skipping...\n");
> + return 0;
> + }
segfaults here..
[jolsa@krava perf]$ ./perf record -g sleep 1
[ perf record: Woken up 1 times to write data ]
[ perf record: Captured and wrote 0.013 MB perf.data (~567 samples) ]
[jolsa@krava perf]$ ./perf report
perf: Segmentation fault
[jolsa@krava perf]$
jirka
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