From: Paul E. McKenney <paulmck@kernel.org>
Date: Wed, 25 Nov 2020 03:13:52 +0000 (-0800)
Subject: torture: Make torture.sh refscale runs use verbose_batched module parameter
X-Git-Tag: v5.12-rc1~150^2~1^2^9~9
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=264da4832b3af4a1a4cc83df1c5fe2d43429faa6;p=thirdparty%2Fkernel%2Flinux.git

torture: Make torture.sh refscale runs use verbose_batched module parameter

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 <paulmck@kernel.org>
---

diff --git a/tools/testing/selftests/rcutorture/bin/torture.sh b/tools/testing/selftests/rcutorture/bin/torture.sh
index a89b521f09dc1..a3c3c254bd26b 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