From: "Paul E. McKenney" <paul...@kernel.org>
On large systems, the refscale printk() rate can overrun the file system's
ability to accept console log messages. This commit therefore uses the
new verbose_batched module parameter to rate-limit some of the higher-rate
printk() calls.
Signed-off-by: Paul E. McKenney <paul...@kernel.org>
---
tools/testing/selftests/rcutorture/bin/torture.sh | 7 ++++++-
1 file changed, 6 insertions(+), 1 deletion(-)
diff --git a/tools/testing/selftests/rcutorture/bin/torture.sh
b/tools/testing/selftests/rcutorture/bin/torture.sh
index a89b521..a3c3c25 100755
--- a/tools/testing/selftests/rcutorture/bin/torture.sh
+++ b/tools/testing/selftests/rcutorture/bin/torture.sh
@@ -24,6 +24,11 @@ if test "$HALF_ALLOTED_CPUS" -lt 1
then
HALF_ALLOTED_CPUS=1
fi
+VERBOSE_BATCH_CPUS=$((TORTURE_ALLOTED_CPUS/16))
+if test "$VERBOSE_BATCH_CPUS" -lt 2
+then
+ VERBOSE_BATCH_CPUS=0
+fi
# Default duration and apportionment.
duration_base=10
@@ -309,7 +314,7 @@ fi
for prim in $primlist
do
torture_bootargs="refscale.scale_type="$prim"
refscale.nreaders=$HALF_ALLOTED_CPUS refscale.loops=10000 refscale.holdoff=20
torture.disable_onoff_at_boot"
- torture_set "refscale-$prim"
tools/testing/selftests/rcutorture/bin/kvm.sh --torture refscale --allcpus
--duration 5 --kconfig "CONFIG_NR_CPUS=$HALF_ALLOTED_CPUS" --trust-make
+ torture_set "refscale-$prim"
tools/testing/selftests/rcutorture/bin/kvm.sh --torture refscale --allcpus
--duration 5 --kconfig "CONFIG_NR_CPUS=$HALF_ALLOTED_CPUS" --bootargs
"verbose_batched=$VERBOSE_BATCH_CPUS" --trust-make
done
if test "$do_rcuscale" = yes
--
2.9.5
