--- zzzz-none-000/linux-3.10.107/kernel/sched/stats.c	2017-06-27 09:49:32.000000000 +0000
+++ scorpion-7490-727/linux-3.10.107/kernel/sched/stats.c	2021-02-04 17:41:59.000000000 +0000
@@ -15,11 +15,6 @@
 static int show_schedstat(struct seq_file *seq, void *v)
 {
 	int cpu;
-	int mask_len = DIV_ROUND_UP(NR_CPUS, 32) * 9;
-	char *mask_str = kmalloc(mask_len, GFP_KERNEL);
-
-	if (mask_str == NULL)
-		return -ENOMEM;
 
 	if (v == (void *)1) {
 		seq_printf(seq, "version %d\n", SCHEDSTAT_VERSION);
@@ -50,9 +45,8 @@
 		for_each_domain(cpu, sd) {
 			enum cpu_idle_type itype;
 
-			cpumask_scnprintf(mask_str, mask_len,
-					  sched_domain_span(sd));
-			seq_printf(seq, "domain%d %s", dcount++, mask_str);
+			seq_printf(seq, "domain%d %*pb", dcount++,
+				   cpumask_pr_args(sched_domain_span(sd)));
 			for (itype = CPU_IDLE; itype < CPU_MAX_IDLE_TYPES;
 					itype++) {
 				seq_printf(seq, " %u %u %u %u %u %u %u %u",
@@ -76,7 +70,6 @@
 		rcu_read_unlock();
 #endif
 	}
-	kfree(mask_str);
 	return 0;
 }
 
@@ -142,4 +135,4 @@
 	proc_create("schedstat", 0, NULL, &proc_schedstat_operations);
 	return 0;
 }
-module_init(proc_schedstat_init);
+subsys_initcall(proc_schedstat_init);