arch_random.c

 1// SPDX-License-Identifier: GPL-2.0
 2/*
 3 * s390 arch random implementation.
 4 *
 5 * Copyright IBM Corp. 2017, 2020
 6 * Author(s): Harald Freudenberger
 7 */
 8
 9#include <linux/export.h>
10#include <linux/kernel.h>
11#include <linux/atomic.h>
12#include <linux/random.h>
13#include <linux/static_key.h>
14#include <asm/archrandom.h>
15#include <asm/cpacf.h>
16
17DEFINE_STATIC_KEY_FALSE(s390_arch_random_available);
18
19atomic64_t s390_arch_random_counter = ATOMIC64_INIT(0);
20EXPORT_SYMBOL(s390_arch_random_counter);