perf trace: Extract the comm/tid printing for syscall enter
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>
diff --git a/tools/perf/builtin-trace.c b/tools/perf/builtin-trace.c
index bcf882a..92488ed 100644
--- a/tools/perf/builtin-trace.c
+++ b/tools/perf/builtin-trace.c
@@ -1144,11 +1144,9 @@
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 @@
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)
{