perf c2c: Add report subcommand

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@kernel.org>
Cc: Andi Kleen <andi@firstfloor.org>
Cc: David Ahern <dsahern@gmail.com>
Cc: Don Zickus <dzickus@redhat.com>
Cc: Joe Mario <jmario@redhat.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Link: http://lkml.kernel.org/r/1474558645-19956-13-git-send-email-jolsa@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

diff --git a/tools/perf/builtin-c2c.c b/tools/perf/builtin-c2c.c
index 58924c6..3fac3a2 100644 (file)
--- 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);
        }