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Subject[PATCH tip/core/rcu 03/14] rcu: Avoid double multiply by HZ
Date
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@linux.ibm.com>
---
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();
--
2.17.1
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