torture: Change KVM environment variable to RCUTORTURE

The torture-test scripting's long-standing use of KVM as the environment
variable tracking the pathname of the rcutorture directory now conflicts
with allmodconfig builds due to the virt/kvm/Makefile.kvm file's use
of this as a makefile variable.  This commit therefore changes the
torture-test scripting from KVM to RCUTORTURE, avoiding the name conflict.

Reported-by: Zhouyi Zhou <zhouzhouyi@gmail.com>
Tested-by: Zhouyi Zhou <zhouzhouyi@gmail.com>
Signed-off-by: Paul E. McKenney <paulmck@kernel.org>

tools/testing/selftests/rcutorture/bin/kvm-again.sh

@@ -47,8 +47,8 @@ else
 	exit 1
 fi
 
-KVM="`pwd`/tools/testing/selftests/rcutorture"; export KVM
-PATH=${KVM}/bin:$PATH; export PATH
+RCUTORTURE="`pwd`/tools/testing/selftests/rcutorture"; export RCUTORTURE
+PATH=${RCUTORTURE}/bin:$PATH; export PATH
 . functions.sh
 
 dryrun=

tools/testing/selftests/rcutorture/bin/kvm-check-branches.sh

@@ -49,8 +49,8 @@ fi
 mkdir $resdir/$ds
 echo Results directory: $resdir/$ds
 
-KVM="`pwd`/tools/testing/selftests/rcutorture"; export KVM
-PATH=${KVM}/bin:$PATH; export PATH
+RCUTORTURE="`pwd`/tools/testing/selftests/rcutorture"; export RCUTORTURE
+PATH=${RCUTORTURE}/bin:$PATH; export PATH
 . functions.sh
 echo Using all `identify_qemu_vcpus` CPUs.
 

tools/testing/selftests/rcutorture/bin/kvm-end-run-stats.sh

@@ -22,8 +22,8 @@ T=${TMPDIR-/tmp}/kvm-end-run-stats.sh.$$
 trap 'rm -rf $T' 0
 mkdir $T
 
-KVM="`pwd`/tools/testing/selftests/rcutorture"; export KVM
-PATH=${KVM}/bin:$PATH; export PATH
+RCUTORTURE="`pwd`/tools/testing/selftests/rcutorture"; export RCUTORTURE
+PATH=${RCUTORTURE}/bin:$PATH; export PATH
 . functions.sh
 default_starttime="`get_starttime`"
 starttime="${2-default_starttime}"

tools/testing/selftests/rcutorture/bin/kvm-remote.sh

@@ -19,8 +19,8 @@ then
 	exit 1
 fi
 
-KVM="`pwd`/tools/testing/selftests/rcutorture"; export KVM
-PATH=${KVM}/bin:$PATH; export PATH
+RCUTORTURE="`pwd`/tools/testing/selftests/rcutorture"; export RCUTORTURE
+PATH=${RCUTORTURE}/bin:$PATH; export PATH
 . functions.sh
 
 starttime="`get_starttime`"
@@ -108,8 +108,8 @@ else
 		cat $T/kvm-again.sh.out | tee -a "$oldrun/remote-log"
 		exit 2
 	fi
-	cp -a "$rundir" "$KVM/res/"
-	oldrun="$KVM/res/$ds"
+	cp -a "$rundir" "$RCUTORTURE/res/"
+	oldrun="$RCUTORTURE/res/$ds"
 fi
 echo | tee -a "$oldrun/remote-log"
 echo " ----" kvm-again.sh output: "(`date`)" | tee -a "$oldrun/remote-log"

tools/testing/selftests/rcutorture/bin/kvm.sh

@@ -25,15 +25,15 @@ LANG=en_US.UTF-8; export LANG
 
 dur=$((30*60))
 dryrun=""
-KVM="`pwd`/tools/testing/selftests/rcutorture"; export KVM
-PATH=${KVM}/bin:$PATH; export PATH
+RCUTORTURE="`pwd`/tools/testing/selftests/rcutorture"; export RCUTORTURE
+PATH=${RCUTORTURE}/bin:$PATH; export PATH
 . functions.sh
 
 TORTURE_ALLOTED_CPUS="`identify_qemu_vcpus`"
 TORTURE_DEFCONFIG=defconfig
 TORTURE_BOOT_IMAGE=""
 TORTURE_BUILDONLY=
-TORTURE_INITRD="$KVM/initrd"; export TORTURE_INITRD
+TORTURE_INITRD="$RCUTORTURE/initrd"; export TORTURE_INITRD
 TORTURE_KCONFIG_ARG=""
 TORTURE_KCONFIG_GDB_ARG=""
 TORTURE_BOOT_GDB_ARG=""
@@ -262,7 +262,7 @@ else
 	exit 1
 fi
 
-CONFIGFRAG=${KVM}/configs/${TORTURE_SUITE}; export CONFIGFRAG
+CONFIGFRAG=${RCUTORTURE}/configs/${TORTURE_SUITE}; export CONFIGFRAG
 
 defaultconfigs="`tr '\012' ' ' < $CONFIGFRAG/CFLIST`"
 if test -z "$configs"
@@ -272,7 +272,7 @@ fi
 
 if test -z "$resdir"
 then
-	resdir=$KVM/res
+	resdir=$RCUTORTURE/res
 fi
 
 # Create a file of test-name/#cpus pairs, sorted by decreasing #cpus.
@@ -386,7 +386,7 @@ END {
 # Generate a script to execute the tests in appropriate batches.
 cat << ___EOF___ > $T/script
 CONFIGFRAG="$CONFIGFRAG"; export CONFIGFRAG
-KVM="$KVM"; export KVM
+RCUTORTURE="$RCUTORTURE"; export RCUTORTURE
 PATH="$PATH"; export PATH
 TORTURE_ALLOTED_CPUS="$TORTURE_ALLOTED_CPUS"; export TORTURE_ALLOTED_CPUS
 TORTURE_BOOT_IMAGE="$TORTURE_BOOT_IMAGE"; export TORTURE_BOOT_IMAGE
@@ -569,7 +569,7 @@ ___EOF___
 awk < $T/cfgcpu.pack \
 	-v TORTURE_BUILDONLY="$TORTURE_BUILDONLY" \
 	-v CONFIGDIR="$CONFIGFRAG/" \
-	-v KVM="$KVM" \
+	-v RCUTORTURE="$RCUTORTURE" \
 	-v ncpus=$cpus \
 	-v jitter="$jitter" \
 	-v rd=$resdir/$ds/ \

tools/testing/selftests/rcutorture/bin/torture.sh

@@ -13,8 +13,8 @@
 scriptname=$0
 args="$*"
 
-KVM="`pwd`/tools/testing/selftests/rcutorture"; export KVM
-PATH=${KVM}/bin:$PATH; export PATH
+RCUTORTURE="`pwd`/tools/testing/selftests/rcutorture"; export RCUTORTURE
+PATH=${RCUTORTURE}/bin:$PATH; export PATH
 . functions.sh
 
 TORTURE_ALLOTED_CPUS="`identify_qemu_vcpus`"