rcutorture: Flag tests requiring more CPUs than are available

This commit adds a "(!)" flag after the number of CPUs required by a
given test if that test requires more than the available number of CPUs.
Note that these flags appear only when the number of CPUs is specified
using the --cpus argument.  In the absence of a --cpus argument, no
tests are flagged.

Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Reviewed-by: Josh Triplett <josh@joshtriplett.org>

1 files changed, 9 insertions, 5 deletions

diff --git a/tools/testing/selftests/rcutorture/bin/kvm.sh b/tools/testing/selftests/rcutorture/bin/kvm.sh
index 7ef3b245c778..c099f8695112 100644
--- a/tools/testing/selftests/rcutorture/bin/kvm.sh
+++ b/tools/testing/selftests/rcutorture/bin/kvm.sh
@@ -300,30 +300,34 @@ function dump(first, pastlast)
                         cfrep[cf[j]]++;
                         cfr[jn] = cf[j] "." cfrep[cf[j]];
                 }
-                print "echo ", cfr[jn], cpusr[jn] ": Starting build.";
+                if (cpusr[jn] > ncpus && ncpus != 0)
+                        ovf = "(!)";
+                else
+                        ovf = "";
+                print "echo ", cfr[jn], cpusr[jn] ovf ": 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 "echo ", cfr[jn], cpusr[jn] ovf ": Waiting for build to complete."
                 print "while test -f " builddir ".wait"
                 print "do"
                 print "\tsleep 1"
                 print "done"
-                print "echo ", cfr[jn], cpusr[jn] ": Build complete."
+                print "echo ", cfr[jn], cpusr[jn] ovf ": Build complete."
                 jn++;
         }
         for (j = 1; j < jn; j++) {
                 builddir=KVM "/b" j
                 print "rm -f " builddir ".ready"
-                print "echo ----", cfr[j], cpusr[j] ": Starting kernel"
+                print "echo ----", cfr[j], cpusr[j] ovf ": Starting kernel"
         }
         print "wait"
         print "echo ---- All kernel runs complete"
         for (j = 1; j < jn; j++) {
                 builddir=KVM "/b" j
-                print "echo ----", cfr[j], cpusr[j] ": Build/run results:"
+                print "echo ----", cfr[j], cpusr[j] ovf ": Build/run results:"
                 print "cat " builddir ".out"
         }
 }