merge in mnc-release history after reset to mnc-dev

Bug: http://b/22047255
Bug: http://b/22091640
Change-Id: I6c51cff43287a6ac4b25fa9ce6a6fc3d232fd047

tests/Android.mk

@@ -241,12 +241,7 @@ libBionicCtsGtestMain_src_files := gtest_main.cpp
 
 libBionicCtsGtestMain_cflags := $(test_cflags)
 
-libBionicCtsGtestMain_cppflags := $(test_cppflags) -DUSING_GTEST_OUTPUT_FORMAT \
-
-# Temporarily fix the job count to 1 for CTS since on some devices the
-# number of online cores is incorrectly read as the total number of cores
-# in the system. When b/24376925 is fixed, this should be removed.
-libBionicCtsGtestMain_cppflags += -DJOB_COUNT_FIXED=1
+libBionicCtsGtestMain_cppflags := $(test_cppflags) -DUSING_GTEST_OUTPUT_FORMAT
 
 module := libBionicCtsGtestMain
 module_tag := optional

tests/gtest_main.cpp

@@ -59,7 +59,7 @@ using testing::internal::COLOR_GREEN;
 using testing::internal::COLOR_YELLOW;
 using testing::internal::ColoredPrintf;
 
-constexpr int DEFAULT_GLOBAL_TEST_RUN_DEADLINE_MS = 90000;
+constexpr int DEFAULT_GLOBAL_TEST_RUN_DEADLINE_MS = 60000;
 constexpr int DEFAULT_GLOBAL_TEST_RUN_WARNLINE_MS = 2000;
 
 // The time each test can run before killed for the reason of timeout.
@@ -839,12 +839,8 @@ static bool RunTestInSeparateProc(int argc, char** argv, std::vector<TestCase>&
   return all_tests_passed;
 }
 
-static size_t GetDefaultJobCount() {
-#if defined(JOB_COUNT_FIXED)
-  return JOB_COUNT_FIXED;
-#else
+static size_t GetProcessorCount() {
   return static_cast<size_t>(sysconf(_SC_NPROCESSORS_ONLN));
-#endif
 }
 
 static void AddPathSeparatorInTestProgramPath(std::vector<char*>& args) {
@@ -954,7 +950,7 @@ static bool PickOptions(std::vector<char*>& args, IsolationTestOptions& options)
   }
 
   // Init default isolation test options.
-  options.job_count = GetDefaultJobCount();
+  options.job_count = GetProcessorCount();
   options.test_deadline_ms = DEFAULT_GLOBAL_TEST_RUN_DEADLINE_MS;
   options.test_warnline_ms = DEFAULT_GLOBAL_TEST_RUN_WARNLINE_MS;
   options.gtest_color = testing::GTEST_FLAG(color);

tests/pthread_test.cpp

@@ -1244,11 +1244,8 @@ TEST(pthread, pthread_attr_getstack_18908062) {
 }
 
 #if defined(__BIONIC__)
-static pthread_mutex_t gettid_mutex;
 static void* pthread_gettid_np_helper(void* arg) {
-  pthread_mutex_lock(&gettid_mutex);
   *reinterpret_cast<pid_t*>(arg) = gettid();
-  pthread_mutex_unlock(&gettid_mutex);
   return NULL;
 }
 #endif
@@ -1259,15 +1256,11 @@ TEST(pthread, pthread_gettid_np) {
 
   pid_t t_gettid_result;
   pthread_t t;
-  pthread_mutex_init(&gettid_mutex, NULL);
-  pthread_mutex_lock(&gettid_mutex);
   pthread_create(&t, NULL, pthread_gettid_np_helper, &t_gettid_result);
 
   pid_t t_pthread_gettid_np_result = pthread_gettid_np(t);
-  pthread_mutex_unlock(&gettid_mutex);
 
   pthread_join(t, NULL);
-  pthread_mutex_destroy(&gettid_mutex);
 
   ASSERT_EQ(t_gettid_result, t_pthread_gettid_np_result);
 #else