perf thread: Adopt get_main_thread from db-export.c

Move the get_main_thread function from db-export.c to thread.c so that
it can be used elsewhere.

Signed-off-by: Andi Kleen <ak@linux.intel.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Link: http://lkml.kernel.org/r/1464051145-19968-2-git-send-email-andi@firstfloor.org
[ Removed leftover bits from db-export.h ]
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

3 files changed, 14 insertions, 12 deletions

diff --git a/tools/perf/util/db-export.c b/tools/perf/util/db-export.c
index c9a6dc173e74..b0c2b5c5d337 100644
--- a/tools/perf/util/db-export.c
+++ b/tools/perf/util/db-export.c
@@ -233,17 +233,6 @@ int db_export__symbol(struct db_export *dbe, struct symbol *sym,
         return 0;
 }
 
-static struct thread *get_main_thread(struct machine *machine, struct thread *thread)
-{
-        if (thread->pid_ == thread->tid)
-                return thread__get(thread);
-
-        if (thread->pid_ == -1)
-                return NULL;
-
-        return machine__find_thread(machine, thread->pid_, thread->pid_);
-}
-
 static int db_ids_from_al(struct db_export *dbe, struct addr_location *al,
                           u64 *dso_db_id, u64 *sym_db_id, u64 *offset)
 {
@@ -382,7 +371,7 @@ int db_export__sample(struct db_export *dbe, union perf_event *event,
         if (err)
                 return err;
 
-        main_thread = get_main_thread(al->machine, thread);
+        main_thread = thread__main_thread(al->machine, thread);
         if (main_thread)
                 comm = machine__thread_exec_comm(al->machine, main_thread);
 
diff --git a/tools/perf/util/thread.c b/tools/perf/util/thread.c
index 45fcb715a36b..ada58e6070bf 100644
--- a/tools/perf/util/thread.c
+++ b/tools/perf/util/thread.c
@@ -265,3 +265,14 @@ void thread__find_cpumode_addr_location(struct thread *thread,
                         break;
         }
 }
+
+struct thread *thread__main_thread(struct machine *machine, struct thread *thread)
+{
+        if (thread->pid_ == thread->tid)
+                return thread__get(thread);
+
+        if (thread->pid_ == -1)
+                return NULL;
+
+        return machine__find_thread(machine, thread->pid_, thread->pid_);
+}
diff --git a/tools/perf/util/thread.h b/tools/perf/util/thread.h
index 45fba13c800b..08fcb14cf637 100644
--- a/tools/perf/util/thread.h
+++ b/tools/perf/util/thread.h
@@ -81,6 +81,8 @@ void thread__insert_map(struct thread *thread, struct map *map);
 int thread__fork(struct thread *thread, struct thread *parent, u64 timestamp);
 size_t thread__fprintf(struct thread *thread, FILE *fp);
 
+struct thread *thread__main_thread(struct machine *machine, struct thread *thread);
+
 void thread__find_addr_map(struct thread *thread,
                            u8 cpumode, enum map_type type, u64 addr,
                            struct addr_location *al);