aboutsummaryrefslogtreecommitdiffstats
path: root/include
diff options
context:
space:
mode:
Diffstat (limited to 'include')
-rw-r--r--include/asm-x86/smp.h33
-rw-r--r--include/asm-x86/smp_32.h21
-rw-r--r--include/asm-x86/smp_64.h27
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);
126 126
127void smp_store_cpu_info(int id); 127void smp_store_cpu_info(int id);
128#define cpu_physical_id(cpu) per_cpu(x86_cpu_to_apicid, cpu) 128#define cpu_physical_id(cpu) per_cpu(x86_cpu_to_apicid, cpu)
129#else 129
130/* We don't mark CPUs online until __cpu_up(), so we need another measure */
131static inline int num_booting_cpus(void)
132{
133 return cpus_weight(cpu_callout_map);
134}
135#endif /* CONFIG_SMP */
136
137#ifdef CONFIG_X86_32_SMP
138/*
139 * This function is needed by all SMP systems. It must _always_ be valid
140 * from the initial startup. We map APIC_BASE very early in page_setup(),
141 * so this is correct in the x86 case.
142 */
143DECLARE_PER_CPU(int, cpu_number);
144#define raw_smp_processor_id() (x86_read_percpu(cpu_number))
145extern int safe_smp_processor_id(void);
146
147#elif defined(CONFIG_X86_64_SMP)
148#define raw_smp_processor_id() read_pda(cpunumber)
149
150#define stack_smp_processor_id() \
151({ \
152 struct thread_info *ti; \
153 __asm__("andq %%rsp,%0; ":"=r" (ti) : "0" (CURRENT_MASK)); \
154 ti->cpu; \
155})
156#define safe_smp_processor_id() smp_processor_id()
157
158#else /* !CONFIG_X86_32_SMP && !CONFIG_X86_64_SMP */
130#define cpu_physical_id(cpu) boot_cpu_physical_apicid 159#define cpu_physical_id(cpu) boot_cpu_physical_apicid
160#define safe_smp_processor_id() 0
161#define stack_smp_processor_id() 0
131#endif 162#endif
132 163
133#ifdef CONFIG_X86_32 164#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;
8extern void (*mtrr_hook)(void); 8extern void (*mtrr_hook)(void);
9extern void zap_low_mappings(void); 9extern void zap_low_mappings(void);
10 10
11#ifdef CONFIG_SMP
12/*
13 * This function is needed by all SMP systems. It must _always_ be valid
14 * from the initial startup. We map APIC_BASE very early in page_setup(),
15 * so this is correct in the x86 case.
16 */
17DECLARE_PER_CPU(int, cpu_number);
18#define raw_smp_processor_id() (x86_read_percpu(cpu_number))
19
20extern int safe_smp_processor_id(void);
21
22/* We don't mark CPUs online until __cpu_up(), so we need another measure */
23static inline int num_booting_cpus(void)
24{
25 return cpus_weight(cpu_callout_map);
26}
27
28#else /* CONFIG_SMP */
29#define safe_smp_processor_id() 0
30#endif /* !CONFIG_SMP */
31
32#endif /* !ASSEMBLY */ 11#endif /* !ASSEMBLY */
33#endif 12#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;
7extern int smp_call_function_mask(cpumask_t mask, void (*func)(void *), 7extern int smp_call_function_mask(cpumask_t mask, void (*func)(void *),
8 void *info, int wait); 8 void *info, int wait);
9 9
10#ifdef CONFIG_SMP
11
12#define raw_smp_processor_id() read_pda(cpunumber)
13
14#define stack_smp_processor_id() \
15({ \
16 struct thread_info *ti; \
17 asm("andq %%rsp,%0; ":"=r" (ti) : "0" (CURRENT_MASK)); \
18 ti->cpu; \
19})
20
21/*
22 * On x86 all CPUs are mapped 1:1 to the APIC space. This simplifies
23 * scheduling and IPI sending and compresses data structures.
24 */
25static inline int num_booting_cpus(void)
26{
27 return cpus_weight(cpu_callout_map);
28}
29
30#define safe_smp_processor_id() smp_processor_id()
31#else /* CONFIG_SMP */
32#define stack_smp_processor_id() 0
33#define safe_smp_processor_id() 0
34#endif /* !CONFIG_SMP */
35
36
37#endif 10#endif
38 11