2 * Copyright IBM Corp. 1999,2009
3 * Author(s): Denis Joseph Barrow,
4 * Martin Schwidefsky <schwidefsky@de.ibm.com>,
5 * Heiko Carstens <heiko.carstens@de.ibm.com>,
12 #include <asm/system.h>
15 extern void machine_restart_smp(char *);
16 extern void machine_halt_smp(void);
17 extern void machine_power_off_smp(void);
19 #define raw_smp_processor_id() (S390_lowcore.cpu_nr)
21 extern int __cpu_disable (void);
22 extern void __cpu_die (unsigned int cpu);
23 extern void cpu_die (void) __attribute__ ((noreturn));
24 extern int __cpu_up (unsigned int cpu);
26 extern struct mutex smp_cpu_state_mutex;
27 extern int smp_cpu_polarization[];
29 extern void arch_send_call_function_single_ipi(int cpu);
30 extern void arch_send_call_function_ipi_mask(const struct cpumask *mask);
32 extern struct save_area *zfcpdump_save_areas[NR_CPUS + 1];
34 extern void smp_switch_to_ipl_cpu(void (*func)(void *), void *);
35 extern void smp_switch_to_cpu(void (*)(void *), void *, unsigned long sp,
37 extern void smp_restart_cpu(void);
40 * returns 1 if (virtual) cpu is scheduled
43 static inline int smp_vcpu_scheduled(int cpu)
47 switch (sigp_ps(&status, 0, cpu, sigp_sense_running)) {
48 case sigp_status_stored:
49 /* Check for running status */
53 case sigp_not_operational:
61 #else /* CONFIG_SMP */
63 static inline void smp_switch_to_ipl_cpu(void (*func)(void *), void *data)
68 #define smp_vcpu_scheduled (1)
70 #endif /* CONFIG_SMP */
72 #ifdef CONFIG_HOTPLUG_CPU
73 extern int smp_rescan_cpus(void);
75 static inline int smp_rescan_cpus(void) { return 0; }
78 #endif /* __ASM_SMP_H */