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

I originally modified the krait mainloop prefetch from cacheline * 8 to * 2.
This causes a perf degradation for copies bigger than will fit in the cache.
Fixing this back to the original * 8. I tried other multiples, but * 8 is th
sweet spot on krait.

Bug: 11221806

(cherry picked from commit c3c58fb560)

Change-Id: I369f81d91ba97a3fcecac84ac57dec921b4758c8

libc/arch-arm/cortex-a15/bionic/memcpy_base.S

@@ -74,8 +74,10 @@ ENTRY(MEMCPY_BASE)
         cmp     r2, #16
         blo     .L_copy_less_than_16_unknown_align
 
-        cmp     r2, #832
-        bge     .L_check_alignment
+        // TODO: The aligned copy code is extremely slow copying some large
+        //       buffers so always go through the unaligned path for now.
+        //cmp     r2, #832
+        //bge     .L_check_alignment
 
 .L_copy_unknown_alignment:
         // Unknown alignment of src and dst.

libc/arch-arm/krait/bionic/memcpy_base.S

@@ -79,7 +79,7 @@ ENTRY(MEMCPY_BASE)
 1:      /* The main loop copies 64 bytes at a time */
         vld1.8      {d0  - d3},   [r1]!
         vld1.8      {d4  - d7},   [r1]!
-        pld         [r1, #(32*2)]
+        pld         [r1, #(32*8)]
         subs        r2, r2, #64
         vst1.8      {d0  - d3},   [r0, :128]!
         vst1.8      {d4  - d7},   [r0, :128]!

tests/Android.mk

@@ -122,13 +122,36 @@ include $(BUILD_NATIVE_TEST)
 include $(CLEAR_VARS)
 LOCAL_MODULE := bionic-unit-tests-static
 LOCAL_ADDITIONAL_DEPENDENCIES := $(LOCAL_PATH)/Android.mk
-LOCAL_CFLAGS += $(test_c_flags)
 LOCAL_FORCE_STATIC_EXECUTABLE := true
-LOCAL_SRC_FILES := $(test_src_files)
-LOCAL_STATIC_LIBRARIES += libstlport_static libstdc++ libm libc bionic-unit-tests-unwind-test-impl
-LOCAL_WHOLE_STATIC_LIBRARIES := $(test_fortify_static_libraries)
+LOCAL_WHOLE_STATIC_LIBRARIES += libBionicTests
+LOCAL_STATIC_LIBRARIES += libstlport_static libstdc++ libm libc
 include $(BUILD_NATIVE_TEST)
 
+# -----------------------------------------------------------------------------
+# We build the static unit tests as a library so they can be used both for
+# bionic-unit-tests-static and also as part of CTS.
+# -----------------------------------------------------------------------------
+
+include $(CLEAR_VARS)
+LOCAL_MODULE := libBionicTests
+LOCAL_ADDITIONAL_DEPENDENCIES := $(LOCAL_PATH)/Android.mk
+LOCAL_CFLAGS += $(test_c_flags)
+LOCAL_SRC_FILES := $(test_src_files)
+LOCAL_CFLAGS += \
+    -DGTEST_OS_LINUX_ANDROID \
+    -DGTEST_HAS_STD_STRING \
+
+LOCAL_C_INCLUDES += \
+    bionic bionic/libstdc++/include \
+    external/gtest/include \
+    external/stlport/stlport \
+
+LOCAL_WHOLE_STATIC_LIBRARIES := \
+    $(test_fortify_static_libraries) \
+    bionic-unit-tests-unwind-test-impl \
+
+include $(BUILD_STATIC_LIBRARY)
+
 # -----------------------------------------------------------------------------
 # Test library for the unit tests.
 # -----------------------------------------------------------------------------

tests/property_benchmark.cpp

@@ -32,10 +32,10 @@ struct LocalPropertyTestState {
     LocalPropertyTestState(int nprops) : nprops(nprops), valid(false) {
         static const char prop_name_chars[] = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ.-_";
 
-        char dir_template[] = "/data/nativetest/prop-XXXXXX";
+        char dir_template[] = "/data/local/tmp/prop-XXXXXX";
         char *dirname = mkdtemp(dir_template);
         if (!dirname) {
-            perror("making temp file for test state failed (is /data/nativetest writable?)");
+            perror("making temp file for test state failed (is /data/local/tmp writable?)");
             return;
         }
 

tests/statvfs_test.cpp

@@ -35,7 +35,7 @@ TEST(statvfs, statvfs) {
 #endif
 
 #if __BIONIC__
-  ASSERT_EQ(0, statvfs("/data/data", &sb));
+  ASSERT_EQ(0, statvfs("/data/local/tmp", &sb));
   ASSERT_NE(0U, sb.f_bfree);
   ASSERT_NE(0U, sb.f_ffree);
   ASSERT_NE(0U, sb.f_fsid);
@@ -59,7 +59,7 @@ TEST(statvfs, fstatvfs) {
 #endif
 
 #if __BIONIC__
-  fd = open("/data/data", O_RDONLY);
+  fd = open("/data/local/tmp", O_RDONLY);
   ASSERT_EQ(0, fstatvfs(fd, &sb));
   close(fd);
   ASSERT_NE(0U, sb.f_bfree);

tests/system_properties_test.cpp

@@ -28,10 +28,10 @@ extern void *__system_property_area__;
 
 struct LocalPropertyTestState {
     LocalPropertyTestState() : valid(false) {
-        char dir_template[] = "/data/nativetest/prop-XXXXXX";
+        char dir_template[] = "/data/local/tmp/prop-XXXXXX";
         char *dirname = mkdtemp(dir_template);
         if (!dirname) {
-            perror("making temp file for test state failed (is /data/nativetest writable?)");
+            perror("making temp file for test state failed (is /data/local/tmp writable?)");
             return;
         }