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perf script: Initialize callchain_param.record_mode 

Milian Wolff reported non functional DWARF unwind under perf script. The
reason is that perf script does not properly configure
callchain_param.record_mode, which is needed by unwind code.

Stealing the code from report and leaving the place for more
initialization code in a hope we could merge it with
report__setup_sample_type one day.

Reported-by: Milian Wolff <mail@milianw.de>
Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Tested-by: Milian Wolff <milian.wolff@kdab.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Link: http://lkml.kernel.org/r/20150813071724.GA21322@krava.brq.redhat.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
This commit is contained in:
Jiri Olsa 2015-08-13 09:17:24 +02:00 committed by Arnaldo Carvalho de Melo
parent 7f4f800131
commit 7322d6c98d
1 changed files with 17 additions and 0 deletions
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17
tools/perf/builtin-script.c
View File

@ -1561,6 +1561,22 @@ static int have_cmd(int argc, const char **argv)
return 0; return 0;
} }
static void script__setup_sample_type(struct perf_script *script)
{
struct perf_session *session = script->session;
u64 sample_type = perf_evlist__combined_sample_type(session->evlist);
if (symbol_conf.use_callchain || symbol_conf.cumulate_callchain) {
if ((sample_type & PERF_SAMPLE_REGS_USER) &&
(sample_type & PERF_SAMPLE_STACK_USER))
callchain_param.record_mode = CALLCHAIN_DWARF;
else if (sample_type & PERF_SAMPLE_BRANCH_STACK)
callchain_param.record_mode = CALLCHAIN_LBR;
else
callchain_param.record_mode = CALLCHAIN_FP;
}
}
int cmd_script(int argc, const char **argv, const char *prefix __maybe_unused) int cmd_script(int argc, const char **argv, const char *prefix __maybe_unused)
{ {
bool show_full_info = false; bool show_full_info = false;
@ -1849,6 +1865,7 @@ int cmd_script(int argc, const char **argv, const char *prefix __maybe_unused)
goto out_delete; goto out_delete;
script.session = session; script.session = session;
script__setup_sample_type(&script);
session->itrace_synth_opts = &itrace_synth_opts; session->itrace_synth_opts = &itrace_synth_opts;