torture: Compress KCSAN as well as KASAN vmlinux files

Compressing KASAN vmlinux files reduces torture.sh res file size from
about 100G to about 50G, which is good, but the KCSAN vmlinux files
are also large.  Compressing them reduces their size from about 700M to
about 100M (but of course your mileage may vary).  This commit therefore
compresses both KASAN and KCSAN vmlinux files.

Signed-off-by: Paul E. McKenney <paulmck@kernel.org>

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

@@ -37,7 +37,7 @@ configs_scftorture=
 kcsan_kmake_args=
 
 # Default compression, duration, and apportionment.
-compress_kasan_vmlinux="`identify_qemu_vcpus`"
+compress_concurrency="`identify_qemu_vcpus`"
 duration_base=10
 duration_rcutorture_frac=7
 duration_locktorture_frac=1
@@ -67,7 +67,7 @@ function doyesno () {
 
 usage () {
 	echo "Usage: $scriptname optional arguments:"
-	echo "       --compress-kasan-vmlinux concurrency"
+	echo "       --compress-concurrency concurrency"
 	echo "       --configs-rcutorture \"config-file list w/ repeat factor (3*TINY01)\""
 	echo "       --configs-locktorture \"config-file list w/ repeat factor (10*LOCK01)\""
 	echo "       --configs-scftorture \"config-file list w/ repeat factor (2*CFLIST)\""
@@ -91,9 +91,9 @@ usage () {
 while test $# -gt 0
 do
 	case "$1" in
-	--compress-kasan-vmlinux)
-		checkarg --compress-kasan-vmlinux "(concurrency level)" $# "$2" '^[0-9][0-9]*$' '^error'
-		compress_kasan_vmlinux=$2
+	--compress-concurrency)
+		checkarg --compress-concurrency "(concurrency level)" $# "$2" '^[0-9][0-9]*$' '^error'
+		compress_concurrency=$2
 		shift
 		;;
 	--config-rcutorture|--configs-rcutorture)
@@ -435,11 +435,11 @@ then
 	echo "  All bugs were KCSAN failures."
 fi
 tdir="`cat $T/successes $T/failures | head -1 | awk '{ print $NF }' | sed -e 's,/[^/]\+/*$,,'`"
-if test -n "$tdir" && test $compress_kasan_vmlinux -gt 0
+if test -n "$tdir" && test $compress_concurrency -gt 0
 then
 	# KASAN vmlinux files can approach 1GB in size, so compress them.
-	echo Looking for KASAN files to compress: `date` > "$tdir/log-xz" 2>&1
-	find "$tdir" -type d -name '*-kasan' -print > $T/xz-todo
+	echo Looking for K[AC]SAN files to compress: `date` > "$tdir/log-xz" 2>&1
+	find "$tdir" -type d -name '*-k[ac]san' -print > $T/xz-todo
 	ncompresses=0
 	batchno=1
 	if test -s $T/xz-todo
@@ -457,7 +457,7 @@ then
 			do
 				xz "$j" >> "$tdir/log-xz" 2>&1 &
 				ncompresses=$((ncompresses+1))
-				if test $ncompresses -ge $compress_kasan_vmlinux
+				if test $ncompresses -ge $compress_concurrency
 				then
 					echo Waiting for batch $batchno of $ncompresses compressions `date` | tee -a "$tdir/log-xz" | tee -a $T/log
 					wait