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 93a53fb..a230007 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 8d118d1..d7b8a38 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`\"