linux-kernel - [PATCH v2] perf annotate: Add itrace options support

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Date:   Mon, 7 Jun 2021 10:59:18 +0800
From:   Yang Jihong <yangjihong1@...wei.com>
To:     <peterz@...radead.org>, <mingo@...hat.com>, <acme@...nel.org>,
        <mark.rutland@....com>, <alexander.shishkin@...ux.intel.com>,
        <jolsa@...hat.com>, <namhyung@...nel.org>,
        <linux-perf-users@...r.kernel.org>, <linux-kernel@...r.kernel.org>
CC:     <yangjihong1@...wei.com>
Subject: [PATCH v2] perf annotate: Add itrace options support

The "auxtrace_info" and "auxtrace" functions are not set in "tool" member of
"annotate". As a result, perf annotate does not support parsing itrace data.

A simple example is as follows:

  # perf record -e arm_spe_0/branch_filter=1/ -a sleep 1
  [ perf record: Woken up 9 times to write data ]
  [ perf record: Captured and wrote 20.874 MB perf.data ]
  # perf annotate --stdio
  Error:
  The perf.data data has no samples!

Solution:
1.Add itrace options in help,
2.Set hook functions of "auxtrace_info" and "auxtrace" in perf_tool.

Signed-off-by: Yang Jihong <yangjihong1@...wei.com>
---

Changes since v1:
 - Adjust spaces to maintain alignment in "tool".

 tools/perf/builtin-annotate.c | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/tools/perf/builtin-annotate.c b/tools/perf/builtin-annotate.c
index 49627a7bed7c..8f87658eff31 100644
--- a/tools/perf/builtin-annotate.c
+++ b/tools/perf/builtin-annotate.c
@@ -474,6 +474,8 @@ int cmd_annotate(int argc, const char **argv)
 			.attr	= perf_event__process_attr,
 			.build_id = perf_event__process_build_id,
 			.tracing_data   = perf_event__process_tracing_data,
+			.auxtrace_info	= perf_event__process_auxtrace_info,
+			.auxtrace	= perf_event__process_auxtrace,
 			.feature	= process_feature_event,
 			.ordered_events = true,
 			.ordering_requires_timestamps = true,
@@ -483,6 +485,9 @@ int cmd_annotate(int argc, const char **argv)
 	struct perf_data data = {
 		.mode  = PERF_DATA_MODE_READ,
 	};
+	struct itrace_synth_opts itrace_synth_opts = {
+		.set = 0,
+	};
 	struct option options[] = {
 	OPT_STRING('i', "input", &input_name, "file",
 		    "input file name"),
@@ -547,6 +552,9 @@ int cmd_annotate(int argc, const char **argv)
 	OPT_CALLBACK(0, "percent-type", &annotate.opts, "local-period",
 		     "Set percent type local/global-period/hits",
 		     annotate_parse_percent_type),
+	OPT_CALLBACK_OPTARG(0, "itrace", &itrace_synth_opts, NULL, "opts",
+			    "Instruction Tracing options\n" ITRACE_HELP,
+			    itrace_parse_synth_opts),
 
 	OPT_END()
 	};
@@ -591,6 +599,8 @@ int cmd_annotate(int argc, const char **argv)
 	if (IS_ERR(annotate.session))
 		return PTR_ERR(annotate.session);
 
+	annotate.session->itrace_synth_opts = &itrace_synth_opts;
+
 	annotate.has_br_stack = perf_header__has_feat(&annotate.session->header,
 						      HEADER_BRANCH_STACK);
 
-- 
2.30.GIT