diff options
author | Glauber Costa <gcosta@redhat.com> | 2008-03-27 14:06:02 -0300 |
---|---|---|
committer | Ingo Molnar <mingo@elte.hu> | 2008-04-17 17:41:32 +0200 |
commit | a9c057c1d1b1080a01004ecac54308365e167b83 (patch) | |
tree | a14daf277587a231e6c4c08304abb29b1b365d49 /include/asm-x86 | |
parent | 24e8ecffa84dd560e0d4d6fcaeca6950805854e7 (diff) |
x86: merge SMP definitions of smp.h
we merge everything that is inside CONFIG_SMP
to smp.h. They differ a little bit, so we use
CONFIG_X86_32_SMP and CONFIG_X86_64_SMP as markers.
Signed-off-by: Glauber Costa <gcosta@redhat.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'include/asm-x86')
-rw-r--r-- | include/asm-x86/smp.h | 33 | ||||
-rw-r--r-- | include/asm-x86/smp_32.h | 21 | ||||
-rw-r--r-- | include/asm-x86/smp_64.h | 27 |
3 files changed, 32 insertions, 49 deletions
diff --git a/include/asm-x86/smp.h b/include/asm-x86/smp.h index 21472cea3d6c..57b3d86dd9ed 100644 --- a/include/asm-x86/smp.h +++ b/include/asm-x86/smp.h @@ -126,8 +126,39 @@ extern unsigned long setup_trampoline(void); void smp_store_cpu_info(int id); #define cpu_physical_id(cpu) per_cpu(x86_cpu_to_apicid, cpu) -#else + +/* We don't mark CPUs online until __cpu_up(), so we need another measure */ +static inline int num_booting_cpus(void) +{ + return cpus_weight(cpu_callout_map); +} +#endif /* CONFIG_SMP */ + +#ifdef CONFIG_X86_32_SMP +/* + * This function is needed by all SMP systems. It must _always_ be valid + * from the initial startup. We map APIC_BASE very early in page_setup(), + * so this is correct in the x86 case. + */ +DECLARE_PER_CPU(int, cpu_number); +#define raw_smp_processor_id() (x86_read_percpu(cpu_number)) +extern int safe_smp_processor_id(void); + +#elif defined(CONFIG_X86_64_SMP) +#define raw_smp_processor_id() read_pda(cpunumber) + +#define stack_smp_processor_id() \ +({ \ + struct thread_info *ti; \ + __asm__("andq %%rsp,%0; ":"=r" (ti) : "0" (CURRENT_MASK)); \ + ti->cpu; \ +}) +#define safe_smp_processor_id() smp_processor_id() + +#else /* !CONFIG_X86_32_SMP && !CONFIG_X86_64_SMP */ #define cpu_physical_id(cpu) boot_cpu_physical_apicid +#define safe_smp_processor_id() 0 +#define stack_smp_processor_id() 0 #endif #ifdef CONFIG_X86_32 diff --git a/include/asm-x86/smp_32.h b/include/asm-x86/smp_32.h index 694d3245a88f..d9ae5ac93dfc 100644 --- a/include/asm-x86/smp_32.h +++ b/include/asm-x86/smp_32.h @@ -8,26 +8,5 @@ extern cpumask_t cpu_callin_map; extern void (*mtrr_hook)(void); extern void zap_low_mappings(void); -#ifdef CONFIG_SMP -/* - * This function is needed by all SMP systems. It must _always_ be valid - * from the initial startup. We map APIC_BASE very early in page_setup(), - * so this is correct in the x86 case. - */ -DECLARE_PER_CPU(int, cpu_number); -#define raw_smp_processor_id() (x86_read_percpu(cpu_number)) - -extern int safe_smp_processor_id(void); - -/* We don't mark CPUs online until __cpu_up(), so we need another measure */ -static inline int num_booting_cpus(void) -{ - return cpus_weight(cpu_callout_map); -} - -#else /* CONFIG_SMP */ -#define safe_smp_processor_id() 0 -#endif /* !CONFIG_SMP */ - #endif /* !ASSEMBLY */ #endif diff --git a/include/asm-x86/smp_64.h b/include/asm-x86/smp_64.h index 8ea49529f324..058f41399798 100644 --- a/include/asm-x86/smp_64.h +++ b/include/asm-x86/smp_64.h @@ -7,32 +7,5 @@ extern cpumask_t cpu_callin_map; extern int smp_call_function_mask(cpumask_t mask, void (*func)(void *), void *info, int wait); -#ifdef CONFIG_SMP - -#define raw_smp_processor_id() read_pda(cpunumber) - -#define stack_smp_processor_id() \ -({ \ - struct thread_info *ti; \ - asm("andq %%rsp,%0; ":"=r" (ti) : "0" (CURRENT_MASK)); \ - ti->cpu; \ -}) - -/* - * On x86 all CPUs are mapped 1:1 to the APIC space. This simplifies - * scheduling and IPI sending and compresses data structures. - */ -static inline int num_booting_cpus(void) -{ - return cpus_weight(cpu_callout_map); -} - -#define safe_smp_processor_id() smp_processor_id() -#else /* CONFIG_SMP */ -#define stack_smp_processor_id() 0 -#define safe_smp_processor_id() 0 -#endif /* !CONFIG_SMP */ - - #endif |