[PATCH RFC 4/4] hazptrtorture: Enable system-independent CPU overcommit

[Paul E. McKenney]

This commit interprets negative values of the nreaders module parameter
as a number of readers per CPU, so that hazptrtorture.nreaders=-5 would
spawn five hazard-pointer reader kthreads per CPU.

Signed-off-by: Paul E. McKenney <paulmck@xxxxxxxxxx>
---
 kernel/rcu/hazptrtorture.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/kernel/rcu/hazptrtorture.c b/kernel/rcu/hazptrtorture.c
index 219fd90a7f8840..c266d0b64dfde1 100644
--- a/kernel/rcu/hazptrtorture.c
+++ b/kernel/rcu/hazptrtorture.c
@@ -631,7 +631,7 @@ static int __init hazptr_torture_init(void)
 	if (nreaders >= 0) {
 		nrealreaders = nreaders;
 	} else {
-		nrealreaders = num_online_cpus() - 2 - nreaders;
+		nrealreaders = num_online_cpus() * -nreaders;
 		if (nrealreaders <= 0)
 			nrealreaders = 1;
 	}
-- 
2.40.1