diff --git a/adb/fdevent.cpp b/adb/fdevent.cpp
index 5cd4988..a8abade 100644
--- a/adb/fdevent.cpp
+++ b/adb/fdevent.cpp
@@ -234,7 +234,7 @@
 
 #else /* USE_SELECT */
 
-#ifdef HAVE_WINSOCK
+#if defined(_WIN32)
 #include <winsock2.h>
 #else
 #include <sys/select.h>
@@ -617,7 +617,7 @@
     fde->func = func;
     fde->arg = arg;
 
-#ifndef HAVE_WINSOCK
+#if !defined(_WIN32)
     fcntl(fd, F_SETFL, O_NONBLOCK);
 #endif
     fdevent_register(fde);
diff --git a/adb/services.cpp b/adb/services.cpp
index 82efb1c..708ef42 100644
--- a/adb/services.cpp
+++ b/adb/services.cpp
@@ -443,7 +443,7 @@
             return -1;
 #endif
         }
-#ifndef HAVE_WINSOCK   /* winsock doesn't implement unix domain sockets */
+#if !defined(_WIN32)   /* winsock doesn't implement unix domain sockets */
     } else if(!strncmp(name, "local:", 6)) {
         ret = socket_local_client(name + 6,
                 ANDROID_SOCKET_NAMESPACE_RESERVED, SOCK_STREAM);
diff --git a/include/cutils/sockets.h b/include/cutils/sockets.h
index 07d1351..2d3c743 100644
--- a/include/cutils/sockets.h
+++ b/include/cutils/sockets.h
@@ -23,7 +23,7 @@
 #include <string.h>
 #include <stdbool.h>
 
-#ifdef HAVE_WINSOCK
+#if defined(_WIN32)
 #include <winsock2.h>
 typedef int  socklen_t;
 #else
diff --git a/include/utils/ByteOrder.h b/include/utils/ByteOrder.h
index baa3a83..44ea13d 100644
--- a/include/utils/ByteOrder.h
+++ b/include/utils/ByteOrder.h
@@ -21,7 +21,7 @@
 
 #include <stdint.h>
 #include <sys/types.h>
-#ifdef HAVE_WINSOCK
+#if defined(_WIN32)
 #include <winsock2.h>
 #else
 #include <netinet/in.h>
diff --git a/include/utils/FileMap.h b/include/utils/FileMap.h
index f70fc92..afd7bfd 100644
--- a/include/utils/FileMap.h
+++ b/include/utils/FileMap.h
@@ -26,7 +26,7 @@
 
 #if defined(__MINGW32__)
 // Ensure that we always pull in winsock2.h before windows.h
-#ifdef HAVE_WINSOCK
+#if defined(_WIN32)
 #include <winsock2.h>
 #endif
 #include <windows.h>
diff --git a/init/readme.txt b/init/readme.txt
index 5a758d7..d70c6f3 100644
--- a/init/readme.txt
+++ b/init/readme.txt
@@ -377,6 +377,29 @@
 bootanimation ends at: 33790 31230 (-2560)
 
 
+Systrace
+--------
+Systrace [1] can be used for obtaining performance analysis reports during boot
+time on userdebug or eng builds.
+Here is an example of trace events of "wm" and "am" categories:
+
+  $ANDROID_BUILD_TOP/external/chromium-trace/systrace.py wm am --boot
+
+This command will cause the device to reboot. After the device is rebooted and
+the boot sequence has finished, the trace report is obtained from the device
+and written as trace.html on the host by hitting Ctrl+C.
+
+LIMITATION
+Recording trace events is started after persistent properties are loaded, so
+the trace events that are emitted before that are not recorded. Several
+services such as vold, surfaceflinger, and servicemanager are affected by this
+limitation since they are started before persistent properties are loaded.
+Zygote initialization and the processes that are forked from the zygote are not
+affected.
+
+[1] http://developer.android.com/tools/help/systrace.html
+
+
 Debugging init
 --------------
 By default, programs executed by init will drop stdout and stderr into
diff --git a/libcutils/record_stream.c b/libcutils/record_stream.c
index 6994904..2bc4226 100644
--- a/libcutils/record_stream.c
+++ b/libcutils/record_stream.c
@@ -22,7 +22,7 @@
 #include <cutils/record_stream.h>
 #include <string.h>
 #include <stdint.h>
-#ifdef HAVE_WINSOCK
+#if defined(_WIN32)
 #include <winsock2.h>   /* for ntohl */
 #else
 #include <netinet/in.h>
diff --git a/libcutils/socket_inaddr_any_server.c b/libcutils/socket_inaddr_any_server.c
index 6c849de..7f0ccb8 100644
--- a/libcutils/socket_inaddr_any_server.c
+++ b/libcutils/socket_inaddr_any_server.c
@@ -20,7 +20,7 @@
 #include <string.h>
 #include <unistd.h>
 
-#ifndef HAVE_WINSOCK
+#if !defined(_WIN32)
 #include <sys/socket.h>
 #include <sys/select.h>
 #include <sys/types.h>
diff --git a/libcutils/socket_local_client.c b/libcutils/socket_local_client.c
index 7b42daa..2526146 100644
--- a/libcutils/socket_local_client.c
+++ b/libcutils/socket_local_client.c
@@ -22,7 +22,7 @@
 
 #include <cutils/sockets.h>
 
-#ifdef HAVE_WINSOCK
+#if defined(_WIN32)
 
 int socket_local_client(const char *name, int namespaceId, int type)
 {
@@ -30,7 +30,7 @@
     return -1;
 }
 
-#else /* !HAVE_WINSOCK */
+#else /* !_WIN32 */
 
 #include <sys/socket.h>
 #include <sys/un.h>
@@ -165,4 +165,4 @@
     return s;
 }
 
-#endif /* !HAVE_WINSOCK */
+#endif /* !_WIN32 */
diff --git a/libcutils/socket_local_server.c b/libcutils/socket_local_server.c
index 60eb86b..c9acdad 100644
--- a/libcutils/socket_local_server.c
+++ b/libcutils/socket_local_server.c
@@ -23,7 +23,7 @@
 #include <errno.h>
 #include <stddef.h>
 
-#ifdef HAVE_WINSOCK
+#if defined(_WIN32)
 
 int socket_local_server(const char *name, int namespaceId, int type)
 {
@@ -31,7 +31,7 @@
     return -1;
 }
 
-#else /* !HAVE_WINSOCK */
+#else /* !_WIN32 */
 
 #include <sys/socket.h>
 #include <sys/un.h>
@@ -123,4 +123,4 @@
     return s;
 }
 
-#endif /* !HAVE_WINSOCK */
+#endif /* !_WIN32 */
diff --git a/libcutils/socket_loopback_client.c b/libcutils/socket_loopback_client.c
index 9aed7b7..e14cffb 100644
--- a/libcutils/socket_loopback_client.c
+++ b/libcutils/socket_loopback_client.c
@@ -20,7 +20,7 @@
 #include <string.h>
 #include <unistd.h>
 
-#ifndef HAVE_WINSOCK
+#if !defined(_WIN32)
 #include <sys/socket.h>
 #include <sys/select.h>
 #include <sys/types.h>
diff --git a/libcutils/socket_loopback_server.c b/libcutils/socket_loopback_server.c
index 71afce7..b600e34 100644
--- a/libcutils/socket_loopback_server.c
+++ b/libcutils/socket_loopback_server.c
@@ -22,7 +22,7 @@
 
 #define LISTEN_BACKLOG 4
 
-#ifndef HAVE_WINSOCK
+#if !defined(_WIN32)
 #include <sys/socket.h>
 #include <sys/select.h>
 #include <sys/types.h>
diff --git a/liblog/log_read.c b/liblog/log_read.c
index 9c4af30..cfc8a7a 100644
--- a/liblog/log_read.c
+++ b/liblog/log_read.c
@@ -37,7 +37,7 @@
 /* branchless on many architectures. */
 #define min(x,y) ((y) ^ (((x) ^ (y)) & -((x) < (y))))
 
-#if (defined(USE_MINGW) || defined(HAVE_WINSOCK))
+#if defined(_WIN32)
 #define WEAK static
 #else
 #define WEAK __attribute__((weak))
@@ -48,7 +48,7 @@
 
 /* Private copy of ../libcutils/socket_local_client.c prevent library loops */
 
-#ifdef HAVE_WINSOCK
+#if defined(_WIN32)
 
 int WEAK socket_local_client(const char *name, int namespaceId, int type)
 {
@@ -56,7 +56,7 @@
     return -ENOSYS;
 }
 
-#else /* !HAVE_WINSOCK */
+#else /* !_WIN32 */
 
 #include <sys/socket.h>
 #include <sys/un.h>
@@ -193,7 +193,7 @@
     return s;
 }
 
-#endif /* !HAVE_WINSOCK */
+#endif /* !_WIN32 */
 /* End of ../libcutils/socket_local_client.c */
 
 #define logger_for_each(logger, logger_list) \
diff --git a/libutils/Unicode.cpp b/libutils/Unicode.cpp
index fb876c9..6f4b721 100644
--- a/libutils/Unicode.cpp
+++ b/libutils/Unicode.cpp
@@ -18,7 +18,7 @@
 
 #include <stddef.h>
 
-#ifdef HAVE_WINSOCK
+#if defined(_WIN32)
 # undef  nhtol
 # undef  htonl
 # undef  nhtos
diff --git a/rootdir/init.rc b/rootdir/init.rc
index f5febde..12999bd 100644
--- a/rootdir/init.rc
+++ b/rootdir/init.rc
@@ -259,6 +259,7 @@
     chmod 0660 /data/misc/wifi/wpa_supplicant.conf
     mkdir /data/local 0751 root root
     mkdir /data/misc/media 0700 media media
+    mkdir /data/misc/boottrace 0771 system shell
 
     # For security reasons, /data/local/tmp should always be empty.
     # Do not place files or directories in /data/local/tmp
diff --git a/rootdir/init.trace.rc b/rootdir/init.trace.rc
index 50944e6..ed4629e 100644
--- a/rootdir/init.trace.rc
+++ b/rootdir/init.trace.rc
@@ -33,3 +33,11 @@
 # Allow only the shell group to read and truncate the kernel trace.
     chown root shell /sys/kernel/debug/tracing/trace
     chmod 0660 /sys/kernel/debug/tracing/trace
+
+on property:persist.debug.atrace.boottrace=1
+    start boottrace
+
+# Run atrace with the categories written in a file
+service boottrace /system/bin/atrace --async_start -f /data/misc/boottrace/categories
+    disabled
+    oneshot