Commit-ID: b3c1d9ec7c59feadd22693f43145d8285bd35b04
Gitweb: https://git.kernel.org/tip/b3c1d9ec7c59feadd22693f43145d8285bd35b04
Author: Paul E. McKenney <paulmck@xxxxxxxxxxxxx>
AuthorDate: Mon, 1 Oct 2018 13:25:32 -0700
Committer: Paul E. McKenney <paulmck@xxxxxxxxxxxxx>
CommitDate: Mon, 12 Nov 2018 09:03:59 -0800
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 <paulmck@xxxxxxxxxxxxx>
---
kernel/rcu/tree.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
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();
|