| // SPDX-License-Identifier: GPL-2.0 | |
| /* | |
| * s390 arch random implementation. | |
| * | |
| * Copyright IBM Corp. 2017, 2020 | |
| * Author(s): Harald Freudenberger | |
| */ | |
| #include <linux/kernel.h> | |
| #include <linux/atomic.h> | |
| #include <linux/random.h> | |
| #include <linux/static_key.h> | |
| #include <asm/cpacf.h> | |
| DEFINE_STATIC_KEY_FALSE(s390_arch_random_available); | |
| atomic64_t s390_arch_random_counter = ATOMIC64_INIT(0); | |
| EXPORT_SYMBOL(s390_arch_random_counter); |