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Donenfeld" , Richard Henderson , linux-alpha@vger.kernel.org, Russell King , linux-arm-kernel@lists.infradead.org, Catalin Marinas , Geert Uytterhoeven , linux-m68k@lists.linux-m68k.org, Dinh Nguyen , Jonas Bonn , linux-openrisc@vger.kernel.org, Helge Deller , linux-parisc@vger.kernel.org, Michael Ellerman , linuxppc-dev@lists.ozlabs.org, Paul Walmsley , linux-riscv@lists.infradead.org, Heiko Carstens , linux-s390@vger.kernel.org, "David S. Miller" , sparclinux@vger.kernel.org Subject: [patch 26/38] loongarch: Select ARCH_HAS_RANDOM_ENTROPY References: <20260410120044.031381086@kernel.org> X-Mailing-List: linuxppc-dev@lists.ozlabs.org List-Id: List-Help: List-Owner: List-Post: List-Archive: , List-Subscribe: , , List-Unsubscribe: Precedence: list MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 The only remaining non-architecture usage of get_cycles() is to provide random_get_entropy(). Switch loongarch over to the new scheme of selecting ARCH_HAS_RANDOM_ENTROPY and providing random_get_entropy() in asm/random.h. Add 'asm/timex.h' includes to the relevant files, so the global include can be removed once all architectures are converted over. Signed-off-by: Thomas Gleixner Cc: Huacai Chen Cc: loongarch@lists.linux.dev --- arch/loongarch/Kconfig | 1 + arch/loongarch/include/asm/random.h | 15 +++++++++++++++ arch/loongarch/kernel/syscall.c | 1 + arch/loongarch/lib/delay.c | 2 +- 4 files changed, 18 insertions(+), 1 deletion(-) --- a/arch/loongarch/Kconfig +++ b/arch/loongarch/Kconfig @@ -26,6 +26,7 @@ config LOONGARCH select ARCH_HAS_NON_OVERLAPPING_ADDRESS_SPACE select ARCH_HAS_PREEMPT_LAZY select ARCH_HAS_PTE_SPECIAL + select ARCH_HAS_RANDOM_ENTROPY select ARCH_HAS_SET_MEMORY select ARCH_HAS_SET_DIRECT_MAP select ARCH_HAS_TICK_BROADCAST if GENERIC_CLOCKEVENTS_BROADCAST --- /dev/null +++ b/arch/loongarch/include/asm/random.h @@ -0,0 +1,15 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* + * Copyright (C) 2020-2022 Loongson Technology Corporation Limited + */ +#ifndef _ASM_RANDOM_H +#define _ASM_RANDOM_H + +#include + +static inline unsigned long random_get_entropy(void) +{ + return get_cycles(); +} + +#endif /* _ASM_RANDOM_H */ --- a/arch/loongarch/kernel/syscall.c +++ b/arch/loongarch/kernel/syscall.c @@ -19,6 +19,7 @@ #include #include #include +#include #include #undef __SYSCALL --- a/arch/loongarch/lib/delay.c +++ b/arch/loongarch/lib/delay.c @@ -5,9 +5,9 @@ #include #include #include -#include #include +#include void __delay(unsigned long cycles) {