rcutorture: Handle multiple runs of the same test

This commit fixes handling numbering of multiple runs of the same test
so as to disambiguate output.
Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Reviewed-by: Josh Triplett <josh@joshtriplett.org>

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

@@ -238,42 +238,39 @@ function dump(first, pastlast)
 	jn=1
 	for (j = first; j < pastlast; j++) {
 		builddir=KVM "/b" jn
-		print "echo ", cf[j], cpus[j] ": Starting build."
-		print "rm -f " builddir ".*"
-		print "touch " builddir ".wait"
-		print "mkdir " builddir " > /dev/null 2>&1 || :"
+		cpusr[jn] = cpus[j];
 		if (cfrep[cf[j]] == "") {
-			cfr[j] = cf[j];
+			cfr[jn] = cf[j];
 			cfrep[cf[j]] = 1;
 		} else {
 			cfrep[cf[j]]++;
-			cfr[j] = cf[j] "." cfrep[cf[j]];
+			cfr[jn] = cf[j] "." cfrep[cf[j]];
 		}
-		print "mkdir " rd cfr[j] " || :";
-		print "kvm-test-1-rcu.sh " CONFIGDIR cf[j], builddir, rd cfr[j], dur " \"" RCU_QEMU_ARG "\" \"" RCU_BOOTARGS "\" > " builddir ".out 2>&1 &"
-		print "echo ", cf[j], cpus[j] ": Waiting for build to complete."
+		print "echo ", cfr[jn], cpusr[jn] ": Starting build.";
+		print "rm -f " builddir ".*";
+		print "touch " builddir ".wait";
+		print "mkdir " builddir " > /dev/null 2>&1 || :";
+		print "mkdir " rd cfr[jn] " || :";
+		print "kvm-test-1-rcu.sh " CONFIGDIR cf[j], builddir, rd cfr[jn], dur " \"" RCU_QEMU_ARG "\" \"" RCU_BOOTARGS "\" > " builddir ".out 2>&1 &"
+		print "echo ", cfr[jn], cpusr[jn] ": Waiting for build to complete."
 		print "while test -f " builddir ".wait"
 		print "do"
 		print "\tsleep 1"
 		print "done"
-		print "echo ", cf[j], cpus[j] ": Build complete."
+		print "echo ", cfr[jn], cpusr[jn] ": Build complete."
 		jn++;
 	}
-	k = first
 	for (j = 1; j < jn; j++) {
 		builddir=KVM "/b" j
 		print "rm -f " builddir ".ready"
-		print "echo ----", cf[k], cpus[k] ": Starting kernel"
-		k++;
+		print "echo ----", cfr[j], cpusr[j] ": Starting kernel"
 	}
 	print "wait"
 	print "echo ---- All kernel runs complete"
-	k = first
 	for (j = 1; j < jn; j++) {
 		builddir=KVM "/b" j
-		print "echo ----", cf[k], cpus[k] ": Build/run results:"
+		print "echo ----", cfr[j], cpusr[j] ": Build/run results:"
 		print "cat " builddir ".out"
-		k++;
 	}
 }