From ace9429bb58fd418f0c81d4c2835699bddf6bde6 Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Thu, 11 Apr 2024 10:27:49 +0200 Subject: Adding upstream version 6.6.15. Signed-off-by: Daniel Baumann --- arch/s390/include/asm/smp.h | 70 +++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 70 insertions(+) create mode 100644 arch/s390/include/asm/smp.h (limited to 'arch/s390/include/asm/smp.h') diff --git a/arch/s390/include/asm/smp.h b/arch/s390/include/asm/smp.h new file mode 100644 index 0000000000..73ed278107 --- /dev/null +++ b/arch/s390/include/asm/smp.h @@ -0,0 +1,70 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* + * Copyright IBM Corp. 1999, 2012 + * Author(s): Denis Joseph Barrow, + * Martin Schwidefsky , + */ +#ifndef __ASM_SMP_H +#define __ASM_SMP_H + +#include +#include +#include + +#define raw_smp_processor_id() (S390_lowcore.cpu_nr) + +extern struct mutex smp_cpu_state_mutex; +extern unsigned int smp_cpu_mt_shift; +extern unsigned int smp_cpu_mtid; +extern __vector128 __initdata boot_cpu_vector_save_area[__NUM_VXRS]; +extern cpumask_t cpu_setup_mask; + +extern int __cpu_up(unsigned int cpu, struct task_struct *tidle); + +extern void arch_send_call_function_single_ipi(int cpu); +extern void arch_send_call_function_ipi_mask(const struct cpumask *mask); + +extern void smp_call_online_cpu(void (*func)(void *), void *); +extern void smp_call_ipl_cpu(void (*func)(void *), void *); +extern void smp_emergency_stop(void); + +extern int smp_find_processor_id(u16 address); +extern int smp_store_status(int cpu); +extern void smp_save_dump_ipl_cpu(void); +extern void smp_save_dump_secondary_cpus(void); +extern void smp_yield_cpu(int cpu); +extern void smp_cpu_set_polarization(int cpu, int val); +extern int smp_cpu_get_polarization(int cpu); +extern int smp_cpu_get_cpu_address(int cpu); +extern void smp_fill_possible_mask(void); +extern void smp_detect_cpus(void); + +static inline void smp_stop_cpu(void) +{ + u16 pcpu = stap(); + + for (;;) { + __pcpu_sigp(pcpu, SIGP_STOP, 0, NULL); + cpu_relax(); + } +} + +/* Return thread 0 CPU number as base CPU */ +static inline int smp_get_base_cpu(int cpu) +{ + return cpu - (cpu % (smp_cpu_mtid + 1)); +} + +static inline void smp_cpus_done(unsigned int max_cpus) +{ +} + +extern int smp_reinit_ipl_cpu(void); +extern int smp_rescan_cpus(void); +extern void __noreturn cpu_die(void); +extern void __cpu_die(unsigned int cpu); +extern int __cpu_disable(void); +extern void schedule_mcck_handler(void); +void notrace smp_yield_cpu(int cpu); + +#endif /* __ASM_SMP_H */ -- cgit v1.2.3