linux-kernel - [PATCH 05/52] perf c2c: Add report subcommand

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Message-Id: <1476975876-2522-6-git-send-email-acme@kernel.org>
Date:   Thu, 20 Oct 2016 12:03:49 -0300
From:   Arnaldo Carvalho de Melo <acme@...nel.org>
To:     Ingo Molnar <mingo@...nel.org>
Cc:     linux-kernel@...r.kernel.org, Linux Weekly News <lwn@....net>,
        Jiri Olsa <jolsa@...nel.org>, Andi Kleen <andi@...stfloor.org>,
        David Ahern <dsahern@...il.com>,
        Don Zickus <dzickus@...hat.com>, Joe Mario <jmario@...hat.com>,
        Namhyung Kim <namhyung@...nel.org>,
        Peter Zijlstra <a.p.zijlstra@...llo.nl>,
        Arnaldo Carvalho de Melo <acme@...hat.com>
Subject: [PATCH 05/52] perf c2c: Add report subcommand

From: Jiri Olsa <jolsa@...nel.org>

Adding c2c report subcommand. It reads the perf.data and displays shared
data analysis.

This patch adds report basic wirings. It gets fully implemented in
following patches.

Signed-off-by: Jiri Olsa <jolsa@...nel.org>
Cc: Andi Kleen <andi@...stfloor.org>
Cc: David Ahern <dsahern@...il.com>
Cc: Don Zickus <dzickus@...hat.com>
Cc: Joe Mario <jmario@...hat.com>
Cc: Namhyung Kim <namhyung@...nel.org>
Cc: Peter Zijlstra <a.p.zijlstra@...llo.nl>
Link: http://lkml.kernel.org/r/1474558645-19956-13-git-send-email-jolsa@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@...hat.com>
---
 tools/perf/builtin-c2c.c | 66 +++++++++++++++++++++++++++++++++++++++++++++++-
 1 file changed, 65 insertions(+), 1 deletion(-)

diff --git a/tools/perf/builtin-c2c.c b/tools/perf/builtin-c2c.c
index 58924c67f818..3fac3a294bdd 100644
--- a/tools/perf/builtin-c2c.c
+++ b/tools/perf/builtin-c2c.c
@@ -5,12 +5,74 @@
 #include "builtin.h"
 #include <subcmd/parse-options.h>
 #include "mem-events.h"
+#include "session.h"
+#include "hist.h"
+#include "tool.h"
+#include "data.h"
+
+struct perf_c2c {
+	struct perf_tool tool;
+};
+
+static struct perf_c2c c2c;
 
 static const char * const c2c_usage[] = {
-	"perf c2c",
+	"perf c2c {record|report}",
 	NULL
 };
 
+static const char * const __usage_report[] = {
+	"perf c2c report",
+	NULL
+};
+
+static const char * const *report_c2c_usage = __usage_report;
+
+static int perf_c2c__report(int argc, const char **argv)
+{
+	struct perf_session *session;
+	struct perf_data_file file = {
+		.mode = PERF_DATA_MODE_READ,
+	};
+	const struct option c2c_options[] = {
+	OPT_STRING('k', "vmlinux", &symbol_conf.vmlinux_name,
+		   "file", "vmlinux pathname"),
+	OPT_INCR('v', "verbose", &verbose,
+		 "be more verbose (show counter open errors, etc)"),
+	OPT_STRING('i', "input", &input_name, "file",
+		   "the input file to process"),
+	OPT_END()
+	};
+	int err = 0;
+
+	argc = parse_options(argc, argv, c2c_options, report_c2c_usage,
+			     PARSE_OPT_STOP_AT_NON_OPTION);
+	if (!argc)
+		usage_with_options(report_c2c_usage, c2c_options);
+
+	file.path = input_name;
+
+	session = perf_session__new(&file, 0, &c2c.tool);
+	if (session == NULL) {
+		pr_debug("No memory for session\n");
+		goto out;
+	}
+
+	if (symbol__init(&session->header.env) < 0)
+		goto out_session;
+
+	/* No pipe support at the moment. */
+	if (perf_data_file__is_pipe(session->file)) {
+		pr_debug("No pipe support at the moment.\n");
+		goto out_session;
+	}
+
+out_session:
+	perf_session__delete(session);
+out:
+	return err;
+}
+
 static int parse_record_events(const struct option *opt __maybe_unused,
 			       const char *str, int unset __maybe_unused)
 {
@@ -129,6 +191,8 @@ int cmd_c2c(int argc, const char **argv, const char *prefix __maybe_unused)
 
 	if (!strncmp(argv[0], "rec", 3)) {
 		return perf_c2c__record(argc, argv);
+	} else if (!strncmp(argv[0], "rep", 3)) {
+		return perf_c2c__report(argc, argv);
 	} else {
 		usage_with_options(c2c_usage, c2c_options);
 	}
-- 
2.7.4