Merge branch 'setlocalversion-speedup' into kbuild/rc-fixes

Conflicts:
	Makefile

2 files changed, 133 insertions, 48 deletions

diff --git a/scripts/package/Makefile b/scripts/package/Makefile
index 62fcc3a7f4d3..3a681ef25306 100644
--- a/scripts/package/Makefile
+++ b/scripts/package/Makefile
@@ -44,7 +44,7 @@ rpm-pkg rpm: $(objtree)/kernel.spec FORCE
         fi
         $(MAKE) clean
         $(PREV) ln -sf $(srctree) $(KERNELPATH)
-        $(CONFIG_SHELL) $(srctree)/scripts/setlocalversion > $(objtree)/.scmversion
+        $(CONFIG_SHELL) $(srctree)/scripts/setlocalversion --scm-only > $(objtree)/.scmversion
         $(PREV) tar -cz $(RCS_TAR_IGNORE) -f $(KERNELPATH).tar.gz $(KERNELPATH)/.
         $(PREV) rm $(KERNELPATH)
         rm -f $(objtree)/.scmversion
diff --git a/scripts/setlocalversion b/scripts/setlocalversion
index 46989b88d734..d6a866ed1835 100755
--- a/scripts/setlocalversion
+++ b/scripts/setlocalversion
@@ -10,73 +10,158 @@
 #
 
 usage() {
-        echo "Usage: $0 [srctree]" >&2
+        echo "Usage: $0 [--scm-only] [srctree]" >&2
         exit 1
 }
 
-cd "${1:-.}" || usage
+scm_only=false
+srctree=.
+if test "$1" = "--scm-only"; then
+        scm_only=true
+        shift
+fi
+if test $# -gt 0; then
+        srctree=$1
+        shift
+fi
+if test $# -gt 0 -o ! -d "$srctree"; then
+        usage
+fi
 
-# Check for git and a git repo.
-if head=`git rev-parse --verify --short HEAD 2>/dev/null`; then
+scm_version()
+{
+        local short=false
 
-        # If we are at a tagged commit (like "v2.6.30-rc6"), we ignore it,
-        # because this version is defined in the top level Makefile.
-        if [ -z "`git describe --exact-match 2>/dev/null`" ]; then
+        cd "$srctree"
+        if test -e .scmversion; then
+                cat "$_"
+                return
+        fi
+        if test "$1" = "--short"; then
+                short=true
+        fi
 
-                # If we are past a tagged commit (like "v2.6.30-rc5-302-g72357d5"),
-                # we pretty print it.
-                if atag="`git describe 2>/dev/null`"; then
-                        echo "$atag" | awk -F- '{printf("-%05d-%s", $(NF-1),$(NF))}'
+        # Check for git and a git repo.
+        if head=`git rev-parse --verify --short HEAD 2>/dev/null`; then
+
+                # If we are at a tagged commit (like "v2.6.30-rc6"), we ignore
+                # it, because this version is defined in the top level Makefile.
+                if [ -z "`git describe --exact-match 2>/dev/null`" ]; then
+
+                        # If only the short version is requested, don't bother
+                        # running further git commands
+                        if $short; then
+                                echo "+"
+                                return
+                        fi
+                        # If we are past a tagged commit (like
+                        # "v2.6.30-rc5-302-g72357d5"), we pretty print it.
+                        if atag="`git describe 2>/dev/null`"; then
+                                echo "$atag" | awk -F- '{printf("-%05d-%s", $(NF-1),$(NF))}'
+
+                        # If we don't have a tag at all we print -g{commitish}.
+                        else
+                                printf '%s%s' -g $head
+                        fi
+                fi
 
-                # If we don't have a tag at all we print -g{commitish}.
-                else
-                        printf '%s%s' -g $head
+                # Is this git on svn?
+                if git config --get svn-remote.svn.url >/dev/null; then
+                        printf -- '-svn%s' "`git svn find-rev $head`"
                 fi
-        fi
 
-        # Is this git on svn?
-        if git config --get svn-remote.svn.url >/dev/null; then
-                printf -- '-svn%s' "`git svn find-rev $head`"
-        fi
+                # Update index only on r/w media
+                [ -w . ] && git update-index --refresh --unmerged > /dev/null
 
-        # Update index only on r/w media
-        [ -w . ] && git update-index --refresh --unmerged > /dev/null
+                # Check for uncommitted changes
+                if git diff-index --name-only HEAD | grep -v "^scripts/package" \
+                    | read dummy; then
+                        printf '%s' -dirty
+                fi
 
-        # Check for uncommitted changes
-        if git diff-index --name-only HEAD | grep -v "^scripts/package" \
-            | read dummy; then
-                printf '%s' -dirty
+                # All done with git
+                return
         fi
 
-        # All done with git
-        exit
-fi
+        # Check for mercurial and a mercurial repo.
+        if hgid=`hg id 2>/dev/null`; then
+                tag=`printf '%s' "$hgid" | cut -d' ' -f2`
+
+                # Do we have an untagged version?
+                if [ -z "$tag" -o "$tag" = tip ]; then
+                        id=`printf '%s' "$hgid" | sed 's/[+ ].*//'`
+                        printf '%s%s' -hg "$id"
+                fi
 
-# Check for mercurial and a mercurial repo.
-if hgid=`hg id 2>/dev/null`; then
-        tag=`printf '%s' "$hgid" | cut -d' ' -f2`
+                # Are there uncommitted changes?
+                # These are represented by + after the changeset id.
+                case "$hgid" in
+                        *+|*+\ *) printf '%s' -dirty ;;
+                esac
 
-        # Do we have an untagged version?
-        if [ -z "$tag" -o "$tag" = tip ]; then
-                id=`printf '%s' "$hgid" | sed 's/[+ ].*//'`
-                printf '%s%s' -hg "$id"
+                # All done with mercurial
+                return
         fi
 
-        # Are there uncommitted changes?
-        # These are represented by + after the changeset id.
-        case "$hgid" in
-                *+|*+\ *) printf '%s' -dirty ;;
-        esac
+        # Check for svn and a svn repo.
+        if rev=`svn info 2>/dev/null | grep '^Last Changed Rev'`; then
+                rev=`echo $rev | awk '{print $NF}'`
+                printf -- '-svn%s' "$rev"
 
-        # All done with mercurial
+                # All done with svn
+                return
+        fi
+}
+
+collect_files()
+{
+        local file res
+
+        for file; do
+                case "$file" in
+                *\~*)
+                        continue
+                        ;;
+                esac
+                if test -e "$file"; then
+                        res="$res$(cat "$file")"
+                fi
+        done
+        echo "$res"
+}
+
+if $scm_only; then
+        scm_version
         exit
 fi
 
-# Check for svn and a svn repo.
-if rev=`svn info 2>/dev/null | grep '^Last Changed Rev'`; then
-        rev=`echo $rev | awk '{print $NF}'`
-        printf -- '-svn%s' "$rev"
+if test -e include/config/auto.conf; then
+        source "$_"
+else
+        echo "Error: kernelrelease not valid - run 'make prepare' to update it"
+        exit 1
+fi
 
-        # All done with svn
-        exit
+# localversion* files in the build and source directory
+res="$(collect_files localversion*)"
+if test ! "$srctree" -ef .; then
+        res="$res$(collect_files "$srctree"/localversion*)"
+fi
+
+# CONFIG_LOCALVERSION and LOCALVERSION (if set)
+res="${res}${CONFIG_LOCALVERSION}${LOCALVERSION}"
+
+# scm version string if not at a tagged commit
+if test "$CONFIG_LOCALVERSION_AUTO" = "y"; then
+        # full scm version string
+        res="$res$(scm_version)"
+else
+        # apped a plus sign if the repository is not in a clean tagged
+        # state and  LOCALVERSION= is not specified
+        if test "${LOCALVERSION+set}" != "set"; then
+                scm=$(scm_version --short)
+                res="$res${scm:++}"
+        fi
 fi
+
+echo "$res"