Commit-ID: 27153acbe1141ceecf098ca5d24c2ae2714c1a5f
Gitweb: http://git.kernel.org/tip/27153acbe1141ceecf098ca5d24c2ae2714c1a5f
Author: Alexander Gordeev <agordeev@xxxxxxxxxx>
AuthorDate: Wed, 11 Feb 2015 15:42:37 +0100
Committer: Paul E. McKenney <paulmck@xxxxxxxxxxxxxxxxxx>
CommitDate: Thu, 26 Feb 2015 12:11:52 -0800
rcu: Remove unnecessary condition check in rcu_qsctr_help()
When the ->curtail and ->donetail pointers differ, ->rcucblist
always points to the beginning of the current list and thus
cannot be NULL. Therefore, the check ->rcucblist != NULL is
redundant and this commit removes it.
Cc: "Paul E. McKenney" <paulmck@xxxxxxxxxxxxxxxxxx>
Signed-off-by: Alexander Gordeev <agordeev@xxxxxxxxxx>
Signed-off-by: Paul E. McKenney <paulmck@xxxxxxxxxxxxxxxxxx>
---
kernel/rcu/tiny.c | 3 +--
1 file changed, 1 insertion(+), 2 deletions(-)
diff --git a/kernel/rcu/tiny.c b/kernel/rcu/tiny.c
index cc9ceca..d4e7fe5 100644
--- a/kernel/rcu/tiny.c
+++ b/kernel/rcu/tiny.c
@@ -103,8 +103,7 @@ EXPORT_SYMBOL(__rcu_is_watching);
static int rcu_qsctr_help(struct rcu_ctrlblk *rcp)
{
RCU_TRACE(reset_cpu_stall_ticks(rcp));
- if (rcp->rcucblist != NULL &&
- rcp->donetail != rcp->curtail) {
+ if (rcp->donetail != rcp->curtail) {
rcp->donetail = rcp->curtail;
return 1;
}
--
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