diff options
Diffstat (limited to 'include/asm-x86/smp.h')
| -rw-r--r-- | include/asm-x86/smp.h | 27 |
1 files changed, 27 insertions, 0 deletions
diff --git a/include/asm-x86/smp.h b/include/asm-x86/smp.h index ef26911dc22..e5534f19c31 100644 --- a/include/asm-x86/smp.h +++ b/include/asm-x86/smp.h @@ -123,6 +123,33 @@ void smp_store_cpu_info(int id); # include "smp_64.h" #endif +#ifdef CONFIG_X86_LOCAL_APIC + +static inline int logical_smp_processor_id(void) +{ + /* we don't want to mark this access volatile - bad code generation */ + return GET_APIC_LOGICAL_ID(*(u32 *)(APIC_BASE + APIC_LDR)); +} + +# ifdef APIC_DEFINITION +extern int hard_smp_processor_id(void); +# else +# include <mach_apicdef.h> +static inline int hard_smp_processor_id(void) +{ + /* we don't want to mark this access volatile - bad code generation */ + return GET_APIC_ID(*(u32 *)(APIC_BASE + APIC_ID)); +} +# endif /* APIC_DEFINITION */ + +#else /* CONFIG_X86_LOCAL_APIC */ + +# ifndef CONFIG_SMP +# define hard_smp_processor_id() 0 +# endif + +#endif /* CONFIG_X86_LOCAL_APIC */ + #ifdef CONFIG_HOTPLUG_CPU extern void cpu_exit_clear(void); extern void cpu_uninit(void); |