Currently, the initial comm of the main thread is exported. Export also a
thread's current comm. That better supports the tracing of multi-threaded
applications that set different comms for different threads to make it
easier to distinguish them.

Signed-off-by: Adrian Hunter <[email protected]>
---
 tools/perf/util/db-export.c | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/tools/perf/util/db-export.c b/tools/perf/util/db-export.c
index 305adead3a1d..2220a60ad29e 100644
--- a/tools/perf/util/db-export.c
+++ b/tools/perf/util/db-export.c
@@ -298,6 +298,7 @@ int db_export__sample(struct db_export *dbe, union 
perf_event *event,
        };
        struct thread *main_thread;
        struct comm *comm = NULL;
+       struct comm *curr_comm;
        int err;
 
        err = db_export__evsel(dbe, evsel);
@@ -349,6 +350,13 @@ int db_export__sample(struct db_export *dbe, union 
perf_event *event,
                }
        }
 
+       curr_comm = thread__comm(thread);
+       if (curr_comm) {
+               err = db_export__comm(dbe, curr_comm, thread);
+               if (err)
+                       goto out_put;
+       }
+
        es.db_id = ++dbe->sample_last_db_id;
 
        err = db_ids_from_al(dbe, al, &es.dso_db_id, &es.sym_db_id, &es.offset);
-- 
2.17.1

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