diff --git a/kernel/sched/psi.c b/kernel/sched/psi.c
index e83c321461cf..932e2097ad44 100644
--- a/kernel/sched/psi.c
+++ b/kernel/sched/psi.c
@@ -1411,27 +1411,19 @@ static int psi_cpu_show(struct seq_file *m, void *v)
 	return psi_show(m, &psi_system, PSI_CPU);
 }
 
-static int psi_open(struct file *file, int (*psi_show)(struct seq_file *, void *))
-{
-	if (file->f_mode & FMODE_WRITE && !capable(CAP_SYS_RESOURCE))
-		return -EPERM;
-
-	return single_open(file, psi_show, NULL);
-}
-
 static int psi_io_open(struct inode *inode, struct file *file)
 {
-	return psi_open(file, psi_io_show);
+	return single_open(file, psi_io_show, NULL);
 }
 
 static int psi_memory_open(struct inode *inode, struct file *file)
 {
-	return psi_open(file, psi_memory_show);
+	return single_open(file, psi_memory_show, NULL);
 }
 
 static int psi_cpu_open(struct inode *inode, struct file *file)
 {
-	return psi_open(file, psi_cpu_show);
+	return single_open(file, psi_cpu_show, NULL);
 }
 
 static ssize_t psi_write(struct file *file, const char __user *user_buf,
@@ -1545,7 +1537,7 @@ static int psi_irq_show(struct seq_file *m, void *v)
 
 static int psi_irq_open(struct inode *inode, struct file *file)
 {
-	return psi_open(file, psi_irq_show);
+	return single_open(file, psi_irq_show, NULL);
 }
 
 static ssize_t psi_irq_write(struct file *file, const char __user *user_buf,
@@ -1568,11 +1560,11 @@ static int __init psi_proc_init(void)
 {
 	if (psi_enable) {
 		proc_mkdir("pressure", NULL);
-		proc_create("pressure/io", 0666, NULL, &psi_io_proc_ops);
-		proc_create("pressure/memory", 0666, NULL, &psi_memory_proc_ops);
-		proc_create("pressure/cpu", 0666, NULL, &psi_cpu_proc_ops);
+		proc_create("pressure/io", 0, NULL, &psi_io_proc_ops);
+		proc_create("pressure/memory", 0, NULL, &psi_memory_proc_ops);
+		proc_create("pressure/cpu", 0, NULL, &psi_cpu_proc_ops);
 #ifdef CONFIG_IRQ_TIME_ACCOUNTING
-		proc_create("pressure/irq", 0666, NULL, &psi_irq_proc_ops);
+		proc_create("pressure/irq", 0, NULL, &psi_irq_proc_ops);
 #endif
 	}
 	return 0;