[tip: core/rcu] torture: Print proper vmlinux path for kvm-again.sh runs

[tip-bot2 for Paul E. McKenney]

The following commit has been merged into the core/rcu branch of tip:

Commit-ID:     03edf700db335b9375c18310d59d0a0ab6c850df
Gitweb:        https://git.kernel.org/tip/03edf700db335b9375c18310d59d0a0ab6c850df
Author:        Paul E. McKenney <paulmck@xxxxxxxxxx>
AuthorDate:    Tue, 23 Feb 2021 13:12:41 -08:00
Committer:     Paul E. McKenney <paulmck@xxxxxxxxxx>
CommitterDate: Mon, 22 Mar 2021 08:29:20 -07:00

torture: Print proper vmlinux path for kvm-again.sh runs

The kvm-again.sh script does not copy over the vmlinux files due to
their large size.  This means that a gdb run must use the vmlinux file
from the original "res" directory.  This commit therefore finds that
directory and prints it out so that the user can copy and pasted the
gdb command just as for the initial run.

Signed-off-by: Paul E. McKenney <paulmck@xxxxxxxxxx>
---
 tools/testing/selftests/rcutorture/bin/kvm-again.sh           | 5 ++++-
 tools/testing/selftests/rcutorture/bin/kvm-test-1-run-qemu.sh | 6 +++++-
 2 files changed, 9 insertions(+), 2 deletions(-)

diff --git a/tools/testing/selftests/rcutorture/bin/kvm-again.sh b/tools/testing/selftests/rcutorture/bin/kvm-again.sh
index f1c80b0..668636e 100755
--- a/tools/testing/selftests/rcutorture/bin/kvm-again.sh
+++ b/tools/testing/selftests/rcutorture/bin/kvm-again.sh
@@ -159,7 +159,10 @@ do
 	then
 		echo "# seconds=$dur" >> $i
 	fi
-	echo "# TORTURE_KCONFIG_GDB_ARG=''" >> $i
+	if test -n "$arg_remote"
+	then
+		echo "# TORTURE_KCONFIG_GDB_ARG=''" >> $i
+	fi
 done
 
 # Extract settings from the last qemu-cmd file transformed above.
diff --git a/tools/testing/selftests/rcutorture/bin/kvm-test-1-run-qemu.sh b/tools/testing/selftests/rcutorture/bin/kvm-test-1-run-qemu.sh
index 576a9b7..5b1aa2a 100755
--- a/tools/testing/selftests/rcutorture/bin/kvm-test-1-run-qemu.sh
+++ b/tools/testing/selftests/rcutorture/bin/kvm-test-1-run-qemu.sh
@@ -67,7 +67,11 @@ then
 	base_resdir=`echo $resdir | sed -e 's/\.[0-9]\+$//'`
 	if ! test -f $base_resdir/vmlinux
 	then
-		base_resdir=/path/to
+		base_resdir="`cat re-run`/$resdir"
+		if ! test -f $base_resdir/vmlinux
+		then
+			base_resdir=/path/to
+		fi
 	fi
 	echo Waiting for you to attach a debug session, for example: > /dev/tty
 	echo "    gdb $base_resdir/vmlinux" > /dev/tty