arch/s390/crypto/arch_random.c

Source file repositories/reference/linux-study-clean/arch/s390/crypto/arch_random.c

File Facts

System
Linux kernel
Corpus path
arch/s390/crypto/arch_random.c
Extension
.c
Size
489 bytes
Lines
21
Domain
Architecture Layer
Bucket
arch/s390
Inferred role
Architecture Layer: exported/initcall integration point
Status
integration implementation candidate

Why This File Exists

CPU and platform-specific kernel glue: boot entry, traps, syscall entry, interrupts, page tables, context switch, and low-level barriers.

Dependency Surface

Detected Declarations

Annotated Snippet

// SPDX-License-Identifier: GPL-2.0
/*
 * s390 arch random implementation.
 *
 * Copyright IBM Corp. 2017, 2020
 * Author(s): Harald Freudenberger
 */

#include <linux/export.h>
#include <linux/kernel.h>
#include <linux/atomic.h>
#include <linux/random.h>
#include <linux/static_key.h>
#include <asm/archrandom.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);

Annotation

Implementation Notes