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    Subject[PATCH 05/52] perf c2c: Add report subcommand
    Date
    From: Jiri Olsa <jolsa@kernel.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@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>
    ---
    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
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