From: Paul E. McKenney <paulmck@kernel.org>
Date: Wed, 25 Nov 2020 18:50:35 +0000 (-0800)
Subject: torture: Make refscale throttle high-rate printk()s
X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=414c116e016584137118067f506125f6ace6128c;p=linux.git

torture: Make refscale throttle high-rate printk()s

This commit adds a short delay for verbose_batched-throttled printk()s
to further decrease console flooding.

Signed-off-by: Paul E. McKenney <paulmck@kernel.org>
---

diff --git a/kernel/rcu/refscale.c b/kernel/rcu/refscale.c
index 3da246f2ccf56..02dd9767b5591 100644
--- a/kernel/rcu/refscale.c
+++ b/kernel/rcu/refscale.c
@@ -52,8 +52,10 @@ static atomic_t verbose_batch_ctr;
 do {											\
 	if (verbose &&									\
 	    (verbose_batched <= 0 ||							\
-	     !(atomic_inc_return(&verbose_batch_ctr) % verbose_batched)))		\
+	     !(atomic_inc_return(&verbose_batch_ctr) % verbose_batched))) {		\
+		schedule_timeout_uninterruptible(1);					\
 		pr_alert("%s" SCALE_FLAG s, scale_type, ## x);				\
+	}										\
 } while (0)
 
 #define VERBOSE_SCALEOUT_ERRSTRING(s, x...) \