linux-kernel - [PATCH] perf script/intel-pt: set synth_opts.callchain for use

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Date:   Mon, 10 Jun 2019 16:42:16 -0700
From:   Song Liu <songliubraving@...com>
To:     <linux-kernel@...r.kernel.org>
CC:     <kernel-team@...com>, <davidca@...com>,
        Song Liu <songliubraving@...com>,
        Milian Wolff <milian.wolff@...b.com>,
        Jiri Olsa <jolsa@...nel.org>,
        Arnaldo Carvalho de Melo <acme@...hat.com>,
        Adrian Hunter <adrian.hunter@...el.com>
Subject: [PATCH] perf script/intel-pt: set synth_opts.callchain for use_browser > 0

Currently, intel_pt_process_auxtrace_info() sets synth_opts.callchain for
use_browser != -1, which is not accurate after we set use_browser to 0 in
cmd_script(). As a result, the following commands sees a lot more errors
like:

  perf record -e intel_pt//u -C 10 -- sleep 3
  perf script

  ...
  instruction trace error type 1 time ...
  ...

This patch fixes this by checking use_browser > 0 instead.

Fixes: c1c9b9695cc8 ("perf script: Allow extended console debug output")
Reported-by: David Carrillo Cisneros <davidca@...com>
Cc: Milian Wolff <milian.wolff@...b.com>
Cc: Jiri Olsa <jolsa@...nel.org>
Cc: Arnaldo Carvalho de Melo <acme@...hat.com>
Cc: Adrian Hunter <adrian.hunter@...el.com>
Signed-off-by: Song Liu <songliubraving@...com>
---
 tools/perf/util/intel-pt.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/tools/perf/util/intel-pt.c b/tools/perf/util/intel-pt.c
index 6d288237887b..15692c104ca8 100644
--- a/tools/perf/util/intel-pt.c
+++ b/tools/perf/util/intel-pt.c
@@ -2588,7 +2588,7 @@ int intel_pt_process_auxtrace_info(union perf_event *event,
 	} else {
 		itrace_synth_opts__set_default(&pt->synth_opts,
 				session->itrace_synth_opts->default_no_sample);
-		if (use_browser != -1) {
+		if (use_browser > 0) {
 			pt->synth_opts.branches = false;
 			pt->synth_opts.callchain = true;
 		}
-- 
2.17.1