[Xen-devel] [PATCH OSSTEST] ap-fetch-version-old: Fix qemu branch handling after mergin of qemu trees

[Ian Campbell <ian.campbell@xxxxxxxxxx>]

ap-fetch-version-old should always reference the output gate, but
99e92a6b3991 "Switch to merged qemu-xen{,-traditional}.git trees"
switched it to use TREE_QEMU_UPSTREAM directly, which can be
overridden by cr-daily-branch. This broke at least when
OSSTEST_BASELINES_ONLY=y since "cr-daily-branch qemu-mainline" ends up looking
for an "upstream-tested" branch in the qemu.org git tree, when it should be
looking at our output tree on xenbits.

Follow pattern of TREE_LINUX and set BASE_TREE_QEMU_UPSTREAM to the
output gate and then conditionally set TREE_QEMU_UPSTREAM to the
BASE_TREE if it is not already set. Switch ap-fetch-version-old to use
BASE_TREE.

I have confirmed that for
qemu-{mainline,upstream-unstable,4.6-testing} both
 TREE_QEMU_UPSTREAM=git://git.qemu.org/qemu.git OSSTEST_BASELINES_ONLY=y 
./ap-fetch-version-old $branch
and
 TREE_QEMU_UPSTREAM=git://git.qemu.org/qemu.git ./ap-fetch-version-old $branch
are consulting the correct trees (and produce the same answers) and that

./ap-fetch-version $branch is also correct in each case.

I have done a dummy cr-daily-branch qemu-mainline (with standalone make-flight)
with baselines forced and it now appears correct.

Signed-off-by: Ian Campbell <ian.campbell@xxxxxxxxxx>
---
We should consider force pushing to at least the mainline repo, if not
the Cambridge instance too.
---
 ap-common            | 6 +++++-
 ap-fetch-version-old | 6 +++---
 2 files changed, 8 insertions(+), 4 deletions(-)

diff --git a/ap-common b/ap-common
index 059b4b2..fc646ee 100644
--- a/ap-common
+++ b/ap-common
@@ -85,10 +85,14 @@ fi
 
 : ${TREEBASE_LINUX_XCP:=http://hg.uk.xensource.com/carbon/trunk/linux-2.6.27}
 
-: ${TREE_QEMU_UPSTREAM:=git://xenbits.xen.org/qemu-xen.git}
+: ${BASE_TREE_QEMU_UPSTREAM:=git://xenbits.xen.org/qemu-xen.git}
 : ${PUSH_TREE_QEMU_UPSTREAM=$XENBITS:/home/xen/git/qemu-xen.git}
 : ${LOCALREV_QEMU_UPSTREAM:=daily-cron.$branch}
 
+if [ "x${TREE_QEMU_UPSTREAM}" ]; then
+       : ${TREE_QEMU_UPSTREAM:=${BASE_TREE_QEMU_UPSTREAM}}
+fi
+
 : ${TREE_QEMU_MAINLINE:=git://git.qemu.org/qemu.git}
 
 info_linux_tree () {
diff --git a/ap-fetch-version-old b/ap-fetch-version-old
index ef079ba..e2c6b3b 100755
--- a/ap-fetch-version-old
+++ b/ap-fetch-version-old
@@ -61,17 +61,17 @@ xen-4.*-testing)
        ;;
 qemu-mainline)
         repo_tree_rev_fetch_git $branch \
-               $TREE_QEMU_UPSTREAM upstream-tested $LOCALREV_QEMU_UPSTREAM
+               $BASE_TREE_QEMU_UPSTREAM upstream-tested $LOCALREV_QEMU_UPSTREAM
         ;;
 qemu-upstream-unstable)
         repo_tree_rev_fetch_git $branch \
-               $TREE_QEMU_UPSTREAM master $LOCALREV_QEMU_UPSTREAM
+               $BASE_TREE_QEMU_UPSTREAM master $LOCALREV_QEMU_UPSTREAM
         ;;
 qemu-upstream-*-testing)
        branchcore=${branch#qemu-upstream-}
        branchcore=${branchcore%-testing}
         repo_tree_rev_fetch_git $branch \
-               $TREE_QEMU_UPSTREAM stable-$branchcore $LOCALREV_QEMU_UPSTREAM
+               $BASE_TREE_QEMU_UPSTREAM stable-$branchcore 
$LOCALREV_QEMU_UPSTREAM
         ;;
 linux)
        repo_tree_rev_fetch_git linux \
-- 
2.5.3


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