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