diff options
| author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-27 10:05:51 +0000 |
|---|---|---|
| committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-27 10:05:51 +0000 |
| commit | 5d1646d90e1f2cceb9f0828f4b28318cd0ec7744 (patch) | |
| tree | a94efe259b9009378be6d90eb30d2b019d95c194 /arch/s390/include/asm/smp.h | |
| parent | Initial commit. (diff) | |
| download | linux-upstream.tar.xz linux-upstream.zip | |
Adding upstream version 5.10.209.upstream/5.10.209upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to '')
| -rw-r--r-- | arch/s390/include/asm/smp.h | 67 |
1 files changed, 67 insertions, 0 deletions
diff --git a/arch/s390/include/asm/smp.h b/arch/s390/include/asm/smp.h new file mode 100644 index 000000000..01e360004 --- /dev/null +++ b/arch/s390/include/asm/smp.h @@ -0,0 +1,67 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* + * Copyright IBM Corp. 1999, 2012 + * Author(s): Denis Joseph Barrow, + * Martin Schwidefsky <schwidefsky@de.ibm.com>, + * Heiko Carstens <heiko.carstens@de.ibm.com>, + */ +#ifndef __ASM_SMP_H +#define __ASM_SMP_H + +#include <asm/sigp.h> +#include <asm/lowcore.h> +#include <asm/processor.h> + +#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 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_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_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); + +#endif /* __ASM_SMP_H */ |