[tip/core/rcu,05/28] rcuscale: Disable verbose torture-test output
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Message ID 20210304003812.24833-5-paulmck@kernel.org
State In Next
Commit 5dbc65b6e849f8c6e03449317e9b22d425c2b0fb
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Series
  • Torture-test scripting updates for v5.13
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Commit Message

Paul E. McKenney March 4, 2021, 12:37 a.m. UTC
From: "Paul E. McKenney" <paulmck@kernel.org>

Given large numbers of threads, the quantity of torture-test output is
sufficient to sometimes result in RCU CPU stall warnings.  The probability
of these stall warnings was greatly reduced by batching the output,
but the warnings were not eliminated.  However, the actual test only
depends on console output that is printed even when rcuscale.verbose=0.
This commit therefore causes this test to run with rcuscale.verbose=0.

Signed-off-by: Paul E. McKenney <paulmck@kernel.org>
---
 tools/testing/selftests/rcutorture/configs/rcuscale/ver_functions.sh | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

Patch
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diff --git a/tools/testing/selftests/rcutorture/configs/rcuscale/ver_functions.sh b/tools/testing/selftests/rcutorture/configs/rcuscale/ver_functions.sh
index 0333e9b..ffbe151 100644
--- a/tools/testing/selftests/rcutorture/configs/rcuscale/ver_functions.sh
+++ b/tools/testing/selftests/rcutorture/configs/rcuscale/ver_functions.sh
@@ -12,5 +12,5 @@ 
 # Adds per-version torture-module parameters to kernels supporting them.
 per_version_boot_params () {
 	echo $1 rcuscale.shutdown=1 \
-		rcuscale.verbose=1
+		rcuscale.verbose=0
 }