diff options
Diffstat (limited to 'arch/s390/include/asm/smp.h')
| -rw-r--r-- | arch/s390/include/asm/smp.h | 26 |
1 files changed, 22 insertions, 4 deletions
diff --git a/arch/s390/include/asm/smp.h b/arch/s390/include/asm/smp.h index 7feca96c48c6..fb2bdbf35da5 100644 --- a/arch/s390/include/asm/smp.h +++ b/arch/s390/include/asm/smp.h @@ -7,11 +7,29 @@ #ifndef __ASM_SMP_H #define __ASM_SMP_H -#include <asm/sigp.h> -#include <asm/lowcore.h> #include <asm/processor.h> +#include <asm/lowcore.h> +#include <asm/machine.h> +#include <asm/sigp.h> + +static __always_inline unsigned int raw_smp_processor_id(void) +{ + unsigned long lc_cpu_nr; + unsigned int cpu; + + BUILD_BUG_ON(sizeof_field(struct lowcore, cpu_nr) != sizeof(cpu)); + lc_cpu_nr = offsetof(struct lowcore, cpu_nr); + asm_inline( + ALTERNATIVE(" ly %[cpu],%[offzero](%%r0)\n", + " ly %[cpu],%[offalt](%%r0)\n", + ALT_FEATURE(MFEATURE_LOWCORE)) + : [cpu] "=d" (cpu) + : [offzero] "i" (lc_cpu_nr), + [offalt] "i" (lc_cpu_nr + LOWCORE_ALT_ADDRESS), + "m" (((struct lowcore *)0)->cpu_nr)); + return cpu; +} -#define raw_smp_processor_id() (get_lowcore()->cpu_nr) #define arch_scale_cpu_capacity smp_cpu_get_capacity extern struct mutex smp_cpu_state_mutex; @@ -25,7 +43,7 @@ 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_ipl_cpu(void (*func)(void *), void *); +extern void __noreturn smp_call_ipl_cpu(void (*func)(void *), void *data); extern void smp_emergency_stop(void); extern int smp_find_processor_id(u16 address); |