[PATCH tip/core/rcu 29/88] rcutorture: Add "git diff" output to testid.txt file

From: Paul E. McKenney
Date: Thu May 25 2017 - 18:22:57 EST


Currently, when running from a git archive, the testid.txt file contains
only the branch name, the output of "git status", and the SHA-1 of
the current HEAD. This is useful, but does not uniquely identify the
source code that was built. This commit therefore adds the output of
"git diff HEAD", which means that if two testid.txt files compare equal,
they correspond to exactly the same source code. Give or take the
possibility of SHA-1 collisions, that is. ;-)

Signed-off-by: Paul E. McKenney <paulmck@xxxxxxxxxxxxxxxxxx>
---
tools/testing/selftests/rcutorture/bin/kvm.sh | 5 +----
1 file changed, 1 insertion(+), 4 deletions(-)

diff --git a/tools/testing/selftests/rcutorture/bin/kvm.sh b/tools/testing/selftests/rcutorture/bin/kvm.sh
index 3b3c1b693ee1..50091de3a911 100755
--- a/tools/testing/selftests/rcutorture/bin/kvm.sh
+++ b/tools/testing/selftests/rcutorture/bin/kvm.sh
@@ -296,10 +296,7 @@ if test -d .git
then
git status >> $resdir/$ds/testid.txt
git rev-parse HEAD >> $resdir/$ds/testid.txt
- if ! git diff HEAD > $T/git-diff 2>&1
- then
- cp $T/git-diff $resdir/$ds
- fi
+ git diff HEAD >> $resdir/$ds/testid.txt
fi
___EOF___
awk < $T/cfgcpu.pack \
--
2.5.2