kbuild: "PREEMPT" in UTS_VERSION

From: Matt Mackall <mpm@selenic.com>

Add PREEMPT to UTS_VERSION where enabled as is done for SMP to make
preempt kernels easily identifiable.
Added SMP PREEMPT as comment in compile.h to force it to be
updated when they change (sam).

Signed-off-by: Matt Mackall <mpm@selenic.com>
Signed-off-by: Sam Ravnborg <sam@ravnborg.org>

diff --git a/init/Makefile b/init/Makefile
index 93a53fbdbe79637b4111b73cc54a9d6bec44409e..a2300078f2b7d98f97a603678e40a39d034bdea5 100644 (file)
--- a/init/Makefile
+++ b/init/Makefile
@@ -25,4 +25,5 @@ $(obj)/version.o: include/linux/compile.h
 
 include/linux/compile.h: FORCE
        @echo '  CHK     $@'
-       @$(CONFIG_SHELL) $(srctree)/scripts/mkcompile_h $@ "$(UTS_MACHINE)" "$(CONFIG_SMP)" "$(CC) $(CFLAGS)"
+       $(Q)$(CONFIG_SHELL) $(srctree)/scripts/mkcompile_h $@ \
+       "$(UTS_MACHINE)" "$(CONFIG_SMP)" "$(CONFIG_PREEMPT)" "$(CC) $(CFLAGS)"

diff --git a/scripts/mkcompile_h b/scripts/mkcompile_h
index 8d118d1819508cf9a14d252086a89108cb8f4e0d..d7b8a384b4a7991960d33c7c01c60d6f58f92fd6 100755 (executable)
--- a/scripts/mkcompile_h
+++ b/scripts/mkcompile_h
@@ -1,7 +1,8 @@
 TARGET=$1
 ARCH=$2
 SMP=$3
-CC=$4
+PREEMPT=$4
+CC=$5
 
 # If compile.h exists already and we don't own autoconf.h
 # (i.e. we're not the same user who did make *config), don't
@@ -26,8 +27,10 @@ fi
 
 
 UTS_VERSION="#$VERSION"
-if [ -n "$SMP" ] ; then UTS_VERSION="$UTS_VERSION SMP"; fi
-UTS_VERSION="$UTS_VERSION `LC_ALL=C LANG=C date`"
+CONFIG_FLAGS=""
+if [ -n "$SMP" ] ; then CONFIG_FLAGS="SMP"; fi
+if [ -n "$PREEMPT" ] ; then CONFIG_FLAGS="$CONFIG_FLAGS PREEMPT"; fi
+UTS_VERSION="$UTS_VERSION $CONFIG_FLAGS `LC_ALL=C LANG=C date`"
 
 # Truncate to maximum length
 
@@ -37,7 +40,8 @@ UTS_TRUNCATE="sed -e s/\(.\{1,$UTS_LEN\}\).*/\1/"
 # Generate a temporary compile.h
 
 ( echo /\* This file is auto generated, version $VERSION \*/
-
+  if [ -n "$CONFIG_FLAGS" ] ; then echo "/* $CONFIG_FLAGS */"; fi
+  
   echo \#define UTS_MACHINE \"$ARCH\"
 
   echo \#define UTS_VERSION \"`echo $UTS_VERSION | $UTS_TRUNCATE`\"