The local variable 'need_rcu_nocb_mask' is true only if CONFIG_NO_HZ_FULL
is defined. So branch "if (need_rcu_nocb_mask)" can be moved within the
scope of "#if defined(CONFIG_NO_HZ_FULL)". At this point, using variable
'need_rcu_nocb_mask' is not necessary, so delete it.
No functional changes, but the code looks a little more concise.
Signed-off-by: Zhen Lei <thunder.leizhen@xxxxxxxxxx>
---
kernel/rcu/tree_nocb.h | 8 ++------
1 file changed, 2 insertions(+), 6 deletions(-)
diff --git a/kernel/rcu/tree_nocb.h b/kernel/rcu/tree_nocb.h
index 636d0546a4e932e..1e334e217f0afb7 100644
--- a/kernel/rcu/tree_nocb.h
+++ b/kernel/rcu/tree_nocb.h
@@ -1165,15 +1165,10 @@ EXPORT_SYMBOL_GPL(rcu_nocb_cpu_offload);
void __init rcu_init_nohz(void)
{
int cpu;
- bool need_rcu_nocb_mask = false;
struct rcu_data *rdp;
#if defined(CONFIG_NO_HZ_FULL)
- if (tick_nohz_full_running && !cpumask_empty(tick_nohz_full_mask))
- need_rcu_nocb_mask = true;
-#endif /* #if defined(CONFIG_NO_HZ_FULL) */
-
- if (need_rcu_nocb_mask) {
+ if (tick_nohz_full_running && !cpumask_empty(tick_nohz_full_mask)) {
if (!cpumask_available(rcu_nocb_mask)) {
if (!zalloc_cpumask_var(&rcu_nocb_mask, GFP_KERNEL)) {
pr_info("rcu_nocb_mask allocation failed, callback offloading disabled.\n");
@@ -1182,6 +1177,7 @@ void __init rcu_init_nohz(void)
}
rcu_nocb_is_setup = true;
}
+#endif /* #if defined(CONFIG_NO_HZ_FULL) */
if (!rcu_nocb_is_setup)
return;
--
2.26.0.106.g9fadedd
