fs: use kmem_cache_zalloc instead
[pv_ops_mirror.git] / include / asm-x86 / smp_32.h
blob955dd7c8538f1a1dc2a75436d780bc33dba923fc
1 #ifndef __ASM_SMP_H
2 #define __ASM_SMP_H
4 /*
5 * We need the APIC definitions automatically as part of 'smp.h'
6 */
7 #ifndef __ASSEMBLY__
8 #include <linux/kernel.h>
9 #include <linux/threads.h>
10 #include <linux/cpumask.h>
11 #endif
13 #if defined(CONFIG_X86_LOCAL_APIC) && !defined(__ASSEMBLY__)
14 #include <asm/bitops.h>
15 #include <asm/mpspec.h>
16 #include <asm/apic.h>
17 #ifdef CONFIG_X86_IO_APIC
18 #include <asm/io_apic.h>
19 #endif
20 #endif
22 #define BAD_APICID 0xFFu
23 #ifdef CONFIG_SMP
24 #ifndef __ASSEMBLY__
27 * Private routines/data
30 extern void smp_alloc_memory(void);
31 extern int pic_mode;
32 extern int smp_num_siblings;
33 DECLARE_PER_CPU(cpumask_t, cpu_sibling_map);
34 DECLARE_PER_CPU(cpumask_t, cpu_core_map);
36 extern void (*mtrr_hook) (void);
37 extern void zap_low_mappings (void);
38 extern void lock_ipi_call_lock(void);
39 extern void unlock_ipi_call_lock(void);
41 #define MAX_APICID 256
42 extern u8 x86_cpu_to_apicid[];
44 #define cpu_physical_id(cpu) x86_cpu_to_apicid[cpu]
46 extern void set_cpu_sibling_map(int cpu);
48 #ifdef CONFIG_HOTPLUG_CPU
49 extern void cpu_exit_clear(void);
50 extern void cpu_uninit(void);
51 extern void remove_siblinginfo(int cpu);
52 #endif
54 struct smp_ops
56 void (*smp_prepare_boot_cpu)(void);
57 void (*smp_prepare_cpus)(unsigned max_cpus);
58 int (*cpu_up)(unsigned cpu);
59 void (*smp_cpus_done)(unsigned max_cpus);
61 void (*smp_send_stop)(void);
62 void (*smp_send_reschedule)(int cpu);
63 int (*smp_call_function_mask)(cpumask_t mask,
64 void (*func)(void *info), void *info,
65 int wait);
68 extern struct smp_ops smp_ops;
70 static inline void smp_prepare_boot_cpu(void)
72 smp_ops.smp_prepare_boot_cpu();
74 static inline void smp_prepare_cpus(unsigned int max_cpus)
76 smp_ops.smp_prepare_cpus(max_cpus);
78 static inline int __cpu_up(unsigned int cpu)
80 return smp_ops.cpu_up(cpu);
82 static inline void smp_cpus_done(unsigned int max_cpus)
84 smp_ops.smp_cpus_done(max_cpus);
87 static inline void smp_send_stop(void)
89 smp_ops.smp_send_stop();
91 static inline void smp_send_reschedule(int cpu)
93 smp_ops.smp_send_reschedule(cpu);
95 static inline int smp_call_function_mask(cpumask_t mask,
96 void (*func) (void *info), void *info,
97 int wait)
99 return smp_ops.smp_call_function_mask(mask, func, info, wait);
102 void native_smp_prepare_boot_cpu(void);
103 void native_smp_prepare_cpus(unsigned int max_cpus);
104 int native_cpu_up(unsigned int cpunum);
105 void native_smp_cpus_done(unsigned int max_cpus);
107 #ifndef CONFIG_PARAVIRT
108 #define startup_ipi_hook(phys_apicid, start_eip, start_esp) \
109 do { } while (0)
110 #endif
113 * This function is needed by all SMP systems. It must _always_ be valid
114 * from the initial startup. We map APIC_BASE very early in page_setup(),
115 * so this is correct in the x86 case.
117 DECLARE_PER_CPU(int, cpu_number);
118 #define raw_smp_processor_id() (x86_read_percpu(cpu_number))
120 extern cpumask_t cpu_callout_map;
121 extern cpumask_t cpu_callin_map;
122 extern cpumask_t cpu_possible_map;
124 /* We don't mark CPUs online until __cpu_up(), so we need another measure */
125 static inline int num_booting_cpus(void)
127 return cpus_weight(cpu_callout_map);
130 extern int safe_smp_processor_id(void);
131 extern int __cpu_disable(void);
132 extern void __cpu_die(unsigned int cpu);
133 extern unsigned int num_processors;
135 void __cpuinit smp_store_cpu_info(int id);
137 #endif /* !__ASSEMBLY__ */
139 #else /* CONFIG_SMP */
141 #define safe_smp_processor_id() 0
142 #define cpu_physical_id(cpu) boot_cpu_physical_apicid
144 #define NO_PROC_ID 0xFF /* No processor magic marker */
146 #endif /* CONFIG_SMP */
148 #ifndef __ASSEMBLY__
150 #ifdef CONFIG_X86_LOCAL_APIC
152 #ifdef APIC_DEFINITION
153 extern int hard_smp_processor_id(void);
154 #else
155 #include <mach_apicdef.h>
156 static inline int hard_smp_processor_id(void)
158 /* we don't want to mark this access volatile - bad code generation */
159 return GET_APIC_ID(*(unsigned long *)(APIC_BASE+APIC_ID));
161 #endif /* APIC_DEFINITION */
163 #else /* CONFIG_X86_LOCAL_APIC */
165 #ifndef CONFIG_SMP
166 #define hard_smp_processor_id() 0
167 #endif
169 #endif /* CONFIG_X86_LOCAL_APIC */
171 extern u8 apicid_2_node[];
173 #ifdef CONFIG_X86_LOCAL_APIC
174 static __inline int logical_smp_processor_id(void)
176 /* we don't want to mark this access volatile - bad code generation */
177 return GET_APIC_LOGICAL_ID(*(unsigned long *)(APIC_BASE+APIC_LDR));
179 #endif
180 #endif
182 #endif