On Sat, 26 Oct 2013 16:25:35 +0200, Jiri Olsa wrote:
> Adding call-graph option support into .perfconfig file,
> so it's now possible use call-graph option like:
>
> [top]
> call-graph = fp
>
> [record]
> call-graph = dwarf,8192
>
> Above options ONLY setup the unwind method. To enable
> perf record/top to actually use it the command line
> option -g/-G must be specified.
>
> The --call-graph option overloads .perfconfig setup.
>
> Assuming above configuration:
>
> $ perf record -g ls
> - enables dwarf unwind with user stack size dump 8192 bytes
>
> $ perf top -G
> - enables frame pointer unwind
>
> $ perf record --call-graph=fp ls
> - enables frame pointer unwind
>
> $ perf top --call-graph=dwarf,4096 ls
> - enables dwarf unwind with user stack size dump 4096 bytes
>
[SNIP]
> --- a/tools/perf/builtin-record.c
> +++ b/tools/perf/builtin-record.c
> @@ -750,6 +750,8 @@ int record_parse_callchain_opt(const struct option *opt,
> struct perf_record_opts *opts = opt->value;
> int ret;
>
> + opts->call_graph_enabled = !unset;
> +
Why not just using symbol_conf.use_callchain?
Thanks,
Namhyung
> /* --no-call-graph */
> if (unset) {
> opts->call_graph = CALLCHAIN_NONE;
> @@ -770,6 +772,8 @@ int record_callchain_opt(const struct option *opt,
> {
> struct perf_record_opts *opts = opt->value;
>
> + opts->call_graph_enabled = !unset;
> +
> if (opts->call_graph == CALLCHAIN_NONE)
> opts->call_graph = CALLCHAIN_FP;
>
> @@ -777,6 +781,16 @@ int record_callchain_opt(const struct option *opt,
> return 0;
> }
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