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authorAdrian Hunter <adrian.hunter@intel.com>2019-07-10 11:57:53 +0300
committerArnaldo Carvalho de Melo <acme@redhat.com>2019-07-10 12:12:05 -0300
commit19207d86940db9dad5f2e0a270a2490f7da451e3 (patch)
tree03c2c6b83397d2a18fcf2627cd1246771ad36ea8 /tools/perf
parented5c0a16feb9f1a4347f109d5e9607f6f38688a0 (diff)
perf db-export: Export main_thread in db_export__sample()
Export main_thread in db_export__sample() because it makes the code easier to understand, and prepares db_export__thread() for further simplification. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Link: http://lkml.kernel.org/r/20190710085810.1650-5-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Diffstat (limited to 'tools/perf')
-rw-r--r--tools/perf/util/db-export.c30
1 files changed, 18 insertions, 12 deletions
diff --git a/tools/perf/util/db-export.c b/tools/perf/util/db-export.c
index 14501236c046..63f9edf65eee 100644
--- a/tools/perf/util/db-export.c
+++ b/tools/perf/util/db-export.c
@@ -71,16 +71,10 @@ int db_export__thread(struct db_export *dbe, struct thread *thread,
thread->db_id = ++dbe->thread_last_db_id;
if (main_thread) {
- if (main_thread != thread) {
- err = db_export__thread(dbe, main_thread, machine,
- comm, main_thread);
+ if (main_thread != thread && comm) {
+ err = db_export__comm_thread(dbe, comm, thread);
if (err)
return err;
- if (comm) {
- err = db_export__comm_thread(dbe, comm, thread);
- if (err)
- return err;
- }
}
main_thread_db_id = main_thread->db_id;
}
@@ -308,12 +302,24 @@ int db_export__sample(struct db_export *dbe, union perf_event *event,
return err;
main_thread = thread__main_thread(al->machine, thread);
- if (main_thread)
+ if (main_thread) {
comm = machine__thread_exec_comm(al->machine, main_thread);
+ /*
+ * A thread has a reference to the main thread, so export the
+ * main thread first.
+ */
+ err = db_export__thread(dbe, main_thread, al->machine, comm,
+ main_thread);
+ if (err)
+ goto out_put;
+ }
- err = db_export__thread(dbe, thread, al->machine, comm, main_thread);
- if (err)
- goto out_put;
+ if (thread != main_thread) {
+ err = db_export__thread(dbe, thread, al->machine, comm,
+ main_thread);
+ if (err)
+ goto out_put;
+ }
if (comm) {
err = db_export__exec_comm(dbe, comm, main_thread);