Commit-ID: 85ef2bd2a561055f3b1cab634f67b734034eb984
Gitweb: http://git.kernel.org/tip/85ef2bd2a561055f3b1cab634f67b734034eb984
Author: Paul E. McKenney <paulmck@xxxxxxxxxxxxxxxxxx>
AuthorDate: Tue, 2 May 2017 15:22:26 -0700
Committer: Paul E. McKenney <paulmck@xxxxxxxxxxxxxxxxxx>
CommitDate: Mon, 24 Jul 2017 16:04:11 -0700
rcutorture: Don't wait for kernel when all builds fail
Currently, rcutorture groups runs in batches, building each scenario in
a given batch, then invoking qemu to run all the kernels in the batch.
Of course, if a given scenario's kernel fails to build, there is no qemu
run for that scenario. And if all of the kernels in a given batch fail
to build, there are no runs, and rcutorture immediately starts on the
next batch.
But not if --jitter has been specified, which it is by default. In this
case, the jitter scripts are started unconditionally, and rcutorture
waits for them to complete, even though there are no kernels to run.
This commit therefore checks for this situation, and refuses to start
jitter unless at least one of the kernels in the batch built successfully.
This saves substantial time when all scenarios' kernels fail to build,
particularly if a long --duration was specified.
Signed-off-by: Paul E. McKenney <paulmck@xxxxxxxxxxxxxxxxxx>
---
.../selftests/rcutorture/bin/kvm-test-1-run.sh | 4 ++++
tools/testing/selftests/rcutorture/bin/kvm.sh | 25 ++++++++++++++++------
2 files changed, 22 insertions(+), 7 deletions(-)
diff --git a/tools/testing/selftests/rcutorture/bin/kvm-test-1-run.sh b/tools/testing/selftests/rcutorture/bin/kvm-test-1-run.sh
index 2a3f87a..0af36a7 100755
--- a/tools/testing/selftests/rcutorture/bin/kvm-test-1-run.sh
+++ b/tools/testing/selftests/rcutorture/bin/kvm-test-1-run.sh
@@ -96,6 +96,8 @@ then
KERNEL=$base_resdir/${BOOT_IMAGE##*/} # use the last component of ${BOOT_IMAGE}
ln -s $base_resdir/Make*.out $resdir # for kvm-recheck.sh
ln -s $base_resdir/.config $resdir # for kvm-recheck.sh
+ # Arch-independent indicator
+ touch $resdir/builtkernel
elif kvm-build.sh $T/Kc2 $builddir
then
# Had to build a kernel for this test.
@@ -108,6 +110,8 @@ then
then
cp $builddir/$BOOT_IMAGE $resdir
KERNEL=$resdir/${BOOT_IMAGE##*/}
+ # Arch-independent indicator
+ touch $resdir/builtkernel
else
echo No identifiable boot image, not running KVM, see $resdir.
echo Do the torture scripts know about your architecture?
diff --git a/tools/testing/selftests/rcutorture/bin/kvm.sh b/tools/testing/selftests/rcutorture/bin/kvm.sh
index 690cb91..cdb32aa 100755
--- a/tools/testing/selftests/rcutorture/bin/kvm.sh
+++ b/tools/testing/selftests/rcutorture/bin/kvm.sh
@@ -332,6 +332,7 @@ function dump(first, pastlast, batchnum)
{
print "echo ----Start batch " batchnum ": `date`";
print "echo ----Start batch " batchnum ": `date` >> " rd "/log";
+ print "needqemurun="
jn=1
for (j = first; j < pastlast; j++) {
builddir=KVM "/b" jn
@@ -367,10 +368,11 @@ function dump(first, pastlast, batchnum)
for (j = 1; j < jn; j++) {
builddir=KVM "/b" j
print "rm -f " builddir ".ready"
- print "if test -z \"$TORTURE_BUILDONLY\""
+ print "if test -f \"" rd cfr[j] "/builtkernel\""
print "then"
- print "\techo ----", cfr[j], cpusr[j] ovf ": Starting kernel. `date`";
- print "\techo ----", cfr[j], cpusr[j] ovf ": Starting kernel. `date` >> " rd "/log";
+ print "\techo ----", cfr[j], cpusr[j] ovf ": Kernel present. `date`";
+ print "\techo ----", cfr[j], cpusr[j] ovf ": Kernel present. `date` >> " rd "/log";
+ print "\tneedqemurun=1"
print "fi"
}
njitter = 0;
@@ -385,13 +387,22 @@ function dump(first, pastlast, batchnum)
njitter = 0;
print "echo Build-only run, so suppressing jitter >> " rd "/log"
}
- for (j = 0; j < njitter; j++)
- print "jitter.sh " j " " dur " " ja[2] " " ja[3] "&"
- print "wait"
- print "if test -z \"$TORTURE_BUILDONLY\""
+ if (TORTURE_BUILDONLY) {
+ print "needqemurun="
+ }
+ print "if test -n \"$needqemurun\""
print "then"
+ print "\techo ---- Starting kernels. `date`";
+ print "\techo ---- Starting kernels. `date` >> " rd "/log";
+ for (j = 0; j < njitter; j++)
+ print "\tjitter.sh " j " " dur " " ja[2] " " ja[3] "&"
+ print "\twait"
print "\techo ---- All kernel runs complete. `date`";
print "\techo ---- All kernel runs complete. `date` >> " rd "/log";
+ print "else"
+ print "\twait"
+ print "\techo ---- No kernel runs. `date`";
+ print "\techo ---- No kernel runs. `date` >> " rd "/log";
print "fi"
for (j = 1; j < jn; j++) {
builddir=KVM "/b" j
--
To unsubscribe from this list: send the line "unsubscribe linux-tip-commits" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
|