| Server IP : 15.235.198.142 / Your IP : 216.73.216.154 Web Server : Apache/2.4.58 (Ubuntu) System : Linux ballsack 6.8.0-45-generic #45-Ubuntu SMP PREEMPT_DYNAMIC Fri Aug 30 12:02:04 UTC 2024 x86_64 User : www-data ( 33) PHP Version : 8.3.6 Disable Function : NONE MySQL : OFF | cURL : ON | WGET : ON | Perl : ON | Python : OFF | Sudo : ON | Pkexec : OFF Directory : /usr/src/linux-headers-6.8.0-45/arch/s390/include/asm/ |
Upload File : |
/* SPDX-License-Identifier: GPL-2.0 */
/*
* Kernel interface for the s390 arch_random_* functions
*
* Copyright IBM Corp. 2017, 2022
*
* Author: Harald Freudenberger <freude@de.ibm.com>
*
*/
#ifndef _ASM_S390_ARCHRANDOM_H
#define _ASM_S390_ARCHRANDOM_H
#include <linux/static_key.h>
#include <linux/preempt.h>
#include <linux/atomic.h>
#include <asm/cpacf.h>
DECLARE_STATIC_KEY_FALSE(s390_arch_random_available);
extern atomic64_t s390_arch_random_counter;
static inline size_t __must_check arch_get_random_longs(unsigned long *v, size_t max_longs)
{
return 0;
}
static inline size_t __must_check arch_get_random_seed_longs(unsigned long *v, size_t max_longs)
{
if (static_branch_likely(&s390_arch_random_available) &&
in_task()) {
cpacf_trng(NULL, 0, (u8 *)v, max_longs * sizeof(*v));
atomic64_add(max_longs * sizeof(*v), &s390_arch_random_counter);
return max_longs;
}
return 0;
}
#endif /* _ASM_S390_ARCHRANDOM_H */