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    Subject[PATCH 04/77] perf trace: Extract the comm/tid printing for syscall enter
    Date
    From: Arnaldo Carvalho de Melo <acme@redhat.com>

    Will be used with augmented syscalls, where we haven't transitioned
    completely to combining sys_enter_FOO with sys_exit_FOO, so we'll go
    as far as having it similar to the end result, strace like, as possible.

    Cc: Adrian Hunter <adrian.hunter@intel.com>
    Cc: David Ahern <dsahern@gmail.com>
    Cc: Jiri Olsa <jolsa@kernel.org>
    Cc: Namhyung Kim <namhyung@kernel.org>
    Cc: Wang Nan <wangnan0@huawei.com>
    Link: https://lkml.kernel.org/n/tip-canomaoiybkswwnhj69u9ae4@git.kernel.org
    Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
    ---
    tools/perf/builtin-trace.c | 14 ++++++++++----
    1 file changed, 10 insertions(+), 4 deletions(-)

    diff --git a/tools/perf/builtin-trace.c b/tools/perf/builtin-trace.c
    index bcf882afd6d0..92488edd00eb 100644
    --- a/tools/perf/builtin-trace.c
    +++ b/tools/perf/builtin-trace.c
    @@ -1144,11 +1144,9 @@ static void sig_handler(int sig)
    interrupted = sig == SIGINT;
    }

    -static size_t trace__fprintf_entry_head(struct trace *trace, struct thread *thread,
    - u64 duration, bool duration_calculated, u64 tstamp, FILE *fp)
    +static size_t trace__fprintf_comm_tid(struct trace *trace, struct thread *thread, FILE *fp)
    {
    - size_t printed = trace__fprintf_tstamp(trace, tstamp, fp);
    - printed += fprintf_duration(duration, duration_calculated, fp);
    + size_t printed = 0;

    if (trace->multiple_threads) {
    if (trace->show_comm)
    @@ -1159,6 +1157,14 @@ static size_t trace__fprintf_entry_head(struct trace *trace, struct thread *thre
    return printed;
    }

    +static size_t trace__fprintf_entry_head(struct trace *trace, struct thread *thread,
    + u64 duration, bool duration_calculated, u64 tstamp, FILE *fp)
    +{
    + size_t printed = trace__fprintf_tstamp(trace, tstamp, fp);
    + printed += fprintf_duration(duration, duration_calculated, fp);
    + return printed + trace__fprintf_comm_tid(trace, thread, fp);
    +}
    +
    static int trace__process_event(struct trace *trace, struct machine *machine,
    union perf_event *event, struct perf_sample *sample)
    {
    --
    2.14.4
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