Commit 27153acb authored by Alexander Gordeev's avatar Alexander Gordeev Committed by Paul E. McKenney

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@linux.vnet.ibm.com>
Signed-off-by: default avatarAlexander Gordeev <agordeev@redhat.com>
Signed-off-by: default avatarPaul E. McKenney <paulmck@linux.vnet.ibm.com>
parent c517d838
...@@ -103,8 +103,7 @@ EXPORT_SYMBOL(__rcu_is_watching); ...@@ -103,8 +103,7 @@ EXPORT_SYMBOL(__rcu_is_watching);
static int rcu_qsctr_help(struct rcu_ctrlblk *rcp) static int rcu_qsctr_help(struct rcu_ctrlblk *rcp)
{ {
RCU_TRACE(reset_cpu_stall_ticks(rcp)); RCU_TRACE(reset_cpu_stall_ticks(rcp));
if (rcp->rcucblist != NULL && if (rcp->donetail != rcp->curtail) {
rcp->donetail != rcp->curtail) {
rcp->donetail = rcp->curtail; rcp->donetail = rcp->curtail;
return 1; return 1;
} }
......
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