[patch 35/38] s390: Select ARCH_HAS_RANDOM_ENTROPY
Thomas Gleixner <[email protected]>
| Newsgroups | org.kernel.vger.sparclinux,dev.linux.lists.iommu,dev.linux.lists.loongarch,org.infradead.lists.linux-arm-kernel,org.infradead.lists.linux-riscv,org.kernel.vger.linux-alpha,org.kernel.vger.linux-crypto,org.kernel.vger.linux-ext4,org.kernel.vger.linux-fbdev,org.kernel.vger.linux-hams,org.kernel.vger.linux-kernel,org.kernel.vger.linux-m68k,org.kernel.vger.linux-openrisc,org.kernel.vger.linux-parisc,org.kernel.vger.linux-s390,org.kernel.vger.linux-wireless,org.kernel.vger.netdev,org.kvack.linux-mm,org.ozlabs.lists.linuxppc-dev |
|---|---|
| Message-ID | <[email protected]> |
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 <[email protected]> Cc: Heiko Carstens <[email protected]> Cc: [email protected] --- 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 <asm/timex.h> + +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 <asm/irq_regs.h> #include <asm/vtimer.h> #include <asm/stp.h> +#include <asm/timex.h> #include <asm/cio.h> #include "entry.h" --- a/arch/s390/kernel/vtime.c +++ b/arch/s390/kernel/vtime.c @@ -14,6 +14,7 @@ #include <linux/time.h> #include <asm/alternative.h> #include <asm/cputime.h> +#include <asm/timex.h> #include <asm/vtimer.h> #include <asm/vtime.h> #include <asm/cpu_mf.h>