cpumask: alloc zeroed cpumask for static cpumask_var_ts

These are defined as static cpumask_var_t so if MAXSMP is not used,
they are cleared already.  Avoid surprises when MAXSMP is enabled.

Signed-off-by: Yinghai Lu <yinghai.lu@kernel.org>
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>

3 files changed, 3 insertions, 3 deletions

diff --git a/kernel/sched_cpupri.c b/kernel/sched_cpupri.c
index cdd3c89574cd..344712a5e3ed 100644
--- a/kernel/sched_cpupri.c
+++ b/kernel/sched_cpupri.c
@@ -165,7 +165,7 @@ int __init_refok cpupri_init(struct cpupri *cp, bool bootmem)
                 vec->count = 0;
                 if (bootmem)
                         alloc_bootmem_cpumask_var(&vec->mask);
-                else if (!alloc_cpumask_var(&vec->mask, GFP_KERNEL))
+                else if (!zalloc_cpumask_var(&vec->mask, GFP_KERNEL))
                         goto cleanup;
         }
 
diff --git a/kernel/sched_rt.c b/kernel/sched_rt.c
index f2c66f8f9712..9bf0d2a73045 100644
--- a/kernel/sched_rt.c
+++ b/kernel/sched_rt.c
@@ -1591,7 +1591,7 @@ static inline void init_sched_rt_class(void)
         unsigned int i;
 
         for_each_possible_cpu(i)
-                alloc_cpumask_var_node(&per_cpu(local_cpu_mask, i),
+                zalloc_cpumask_var_node(&per_cpu(local_cpu_mask, i),
                                         GFP_KERNEL, cpu_to_node(i));
 }
 #endif /* CONFIG_SMP */
diff --git a/kernel/smp.c b/kernel/smp.c
index 858baac568ee..ad63d8501207 100644
--- a/kernel/smp.c
+++ b/kernel/smp.c
@@ -52,7 +52,7 @@ hotplug_cfd(struct notifier_block *nfb, unsigned long action, void *hcpu)
         switch (action) {
         case CPU_UP_PREPARE:
         case CPU_UP_PREPARE_FROZEN:
-                if (!alloc_cpumask_var_node(&cfd->cpumask, GFP_KERNEL,
+                if (!zalloc_cpumask_var_node(&cfd->cpumask, GFP_KERNEL,
                                 cpu_to_node(cpu)))
                         return NOTIFY_BAD;
                 break;