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Donenfeld" , Richard Henderson , linux-alpha@vger.kernel.org, Russell King , linux-arm-kernel@lists.infradead.org, Catalin Marinas , Huacai Chen , loongarch@lists.linux.dev, 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, "David S. Miller" , sparclinux@vger.kernel.org Subject: [patch 35/38] s390: 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 s390 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: Heiko Carstens Cc: linux-s390@vger.kernel.org --- arch/s390/Kconfig | 1 + arch/s390/include/asm/random.h | 12 ++++++++++++ arch/s390/include/asm/timex.h | 6 ------ arch/s390/kernel/time.c | 1 + arch/s390/kernel/vtime.c | 1 + 5 files changed, 15 insertions(+), 6 deletions(-) --- a/arch/s390/Kconfig +++ b/arch/s390/Kconfig @@ -108,6 +108,7 @@ config S390 select ARCH_HAS_PREEMPT_LAZY select ARCH_HAS_PTDUMP select ARCH_HAS_PTE_SPECIAL + select ARCH_HAS_RANDOM_ENTROPY select ARCH_HAS_SCALED_CPUTIME select ARCH_HAS_SET_DIRECT_MAP select ARCH_HAS_SET_MEMORY --- /dev/null +++ b/arch/s390/include/asm/random.h @@ -0,0 +1,12 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +#ifndef _ASM_S390_RANDOM_H +#define _ASM_S390_RANDOM_H + +#include + +static inline unsigned long random_get_entropy(void) +{ + return (unsigned long)get_tod_clock_monotonic() >> 2; +} + +#endif --- a/arch/s390/include/asm/timex.h +++ b/arch/s390/include/asm/timex.h @@ -219,12 +219,6 @@ static inline unsigned long get_tod_cloc return tod; } -static inline cycles_t get_cycles(void) -{ - return (cycles_t)get_tod_clock_monotonic() >> 2; -} -#define get_cycles get_cycles - /** * tod_to_ns - convert a TOD format value to nanoseconds * @todval: to be converted TOD format value --- a/arch/s390/kernel/time.c +++ b/arch/s390/kernel/time.c @@ -50,6 +50,7 @@ #include #include #include +#include #include #include "entry.h" --- a/arch/s390/kernel/vtime.c +++ b/arch/s390/kernel/vtime.c @@ -14,6 +14,7 @@ #include #include #include +#include #include #include #include