From: Paul E. McKenney Date: Mon, 1 Oct 2018 20:25:32 +0000 (-0700) Subject: rcu: Avoid double multiply by HZ X-Git-Tag: for-linus-20190104~105^2^2~17^4~11 X-Git-Url: https://git.kernel.dk/?a=commitdiff_plain;h=b3c1d9ec7c59feadd22693f43145d8285bd35b04;p=linux-block.git rcu: Avoid double multiply by HZ The rcu_check_gp_start_stall() function multiplies the return value from rcu_jiffies_till_stall_check() by HZ, but the units are already in jiffies. This commit therefore avoids the need for introduction of a jiffies-squared unit by removing the extraneous multiplication. Signed-off-by: Paul E. McKenney --- diff --git a/kernel/rcu/tree.c b/kernel/rcu/tree.c index 121f833acd04..4933f5d9d992 100644 --- a/kernel/rcu/tree.c +++ b/kernel/rcu/tree.c @@ -2603,7 +2603,7 @@ static void force_quiescent_state(void) static void rcu_check_gp_start_stall(struct rcu_node *rnp, struct rcu_data *rdp) { - const unsigned long gpssdelay = rcu_jiffies_till_stall_check() * HZ; + const unsigned long gpssdelay = rcu_jiffies_till_stall_check(); unsigned long flags; unsigned long j; struct rcu_node *rnp_root = rcu_get_root();