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Diffstat (limited to 'arch/x86/kernel/smpboot_32.c')
-rw-r--r--arch/x86/kernel/smpboot_32.c61
1 files changed, 22 insertions, 39 deletions
diff --git a/arch/x86/kernel/smpboot_32.c b/arch/x86/kernel/smpboot_32.c
index 4ea80cbe52e..5787a0c3e29 100644
--- a/arch/x86/kernel/smpboot_32.c
+++ b/arch/x86/kernel/smpboot_32.c
@@ -83,7 +83,6 @@ EXPORT_SYMBOL(cpu_online_map);
cpumask_t cpu_callin_map;
cpumask_t cpu_callout_map;
-EXPORT_SYMBOL(cpu_callout_map);
cpumask_t cpu_possible_map;
EXPORT_SYMBOL(cpu_possible_map);
static cpumask_t smp_commenced_mask;
@@ -92,15 +91,10 @@ static cpumask_t smp_commenced_mask;
DEFINE_PER_CPU_SHARED_ALIGNED(struct cpuinfo_x86, cpu_info);
EXPORT_PER_CPU_SYMBOL(cpu_info);
-/*
- * The following static array is used during kernel startup
- * and the x86_cpu_to_apicid_ptr contains the address of the
- * array during this time. Is it zeroed when the per_cpu
- * data area is removed.
- */
+/* which logical CPU number maps to which CPU (physical APIC ID) */
u8 x86_cpu_to_apicid_init[NR_CPUS] __initdata =
{ [0 ... NR_CPUS-1] = BAD_APICID };
-void *x86_cpu_to_apicid_ptr;
+void *x86_cpu_to_apicid_early_ptr;
DEFINE_PER_CPU(u8, x86_cpu_to_apicid) = BAD_APICID;
EXPORT_PER_CPU_SYMBOL(x86_cpu_to_apicid);
@@ -113,7 +107,6 @@ u8 apicid_2_node[MAX_APICID];
extern const unsigned char trampoline_data [];
extern const unsigned char trampoline_end [];
static unsigned char *trampoline_base;
-static int trampoline_exec;
static void map_cpu_to_logical_apicid(void);
@@ -138,17 +131,13 @@ static unsigned long __cpuinit setup_trampoline(void)
*/
void __init smp_alloc_memory(void)
{
- trampoline_base = (void *) alloc_bootmem_low_pages(PAGE_SIZE);
+ trampoline_base = alloc_bootmem_low_pages(PAGE_SIZE);
/*
* Has to be in very low memory so we can execute
* real-mode AP code.
*/
if (__pa(trampoline_base) >= 0x9F000)
BUG();
- /*
- * Make the SMP trampoline executable:
- */
- trampoline_exec = set_kernel_exec((unsigned long)trampoline_base, 1);
}
/*
@@ -405,7 +394,7 @@ static void __cpuinit start_secondary(void *unused)
setup_secondary_clock();
if (nmi_watchdog == NMI_IO_APIC) {
disable_8259A_irq(0);
- enable_NMI_through_LVT0(NULL);
+ enable_NMI_through_LVT0();
enable_8259A_irq(0);
}
/*
@@ -448,38 +437,38 @@ void __devinit initialize_secondary(void)
{
/*
* We don't actually need to load the full TSS,
- * basically just the stack pointer and the eip.
+ * basically just the stack pointer and the ip.
*/
asm volatile(
"movl %0,%%esp\n\t"
"jmp *%1"
:
- :"m" (current->thread.esp),"m" (current->thread.eip));
+ :"m" (current->thread.sp),"m" (current->thread.ip));
}
/* Static state in head.S used to set up a CPU */
extern struct {
- void * esp;
+ void * sp;
unsigned short ss;
} stack_start;
#ifdef CONFIG_NUMA
/* which logical CPUs are on which nodes */
-cpumask_t node_2_cpu_mask[MAX_NUMNODES] __read_mostly =
+cpumask_t node_to_cpumask_map[MAX_NUMNODES] __read_mostly =
{ [0 ... MAX_NUMNODES-1] = CPU_MASK_NONE };
-EXPORT_SYMBOL(node_2_cpu_mask);
+EXPORT_SYMBOL(node_to_cpumask_map);
/* which node each logical CPU is on */
-int cpu_2_node[NR_CPUS] __read_mostly = { [0 ... NR_CPUS-1] = 0 };
-EXPORT_SYMBOL(cpu_2_node);
+int cpu_to_node_map[NR_CPUS] __read_mostly = { [0 ... NR_CPUS-1] = 0 };
+EXPORT_SYMBOL(cpu_to_node_map);
/* set up a mapping between cpu and node. */
static inline void map_cpu_to_node(int cpu, int node)
{
printk("Mapping cpu %d to node %d\n", cpu, node);
- cpu_set(cpu, node_2_cpu_mask[node]);
- cpu_2_node[cpu] = node;
+ cpu_set(cpu, node_to_cpumask_map[node]);
+ cpu_to_node_map[cpu] = node;
}
/* undo a mapping between cpu and node. */
@@ -489,8 +478,8 @@ static inline void unmap_cpu_to_node(int cpu)
printk("Unmapping cpu %d from all nodes\n", cpu);
for (node = 0; node < MAX_NUMNODES; node ++)
- cpu_clear(cpu, node_2_cpu_mask[node]);
- cpu_2_node[cpu] = 0;
+ cpu_clear(cpu, node_to_cpumask_map[node]);
+ cpu_to_node_map[cpu] = 0;
}
#else /* !CONFIG_NUMA */
@@ -668,7 +657,7 @@ wakeup_secondary_cpu(int phys_apicid, unsigned long start_eip)
* target processor state.
*/
startup_ipi_hook(phys_apicid, (unsigned long) start_secondary,
- (unsigned long) stack_start.esp);
+ (unsigned long) stack_start.sp);
/*
* Run STARTUP IPI loop.
@@ -754,7 +743,7 @@ static inline struct task_struct * __cpuinit alloc_idle_task(int cpu)
/* initialize thread_struct. we really want to avoid destroy
* idle tread
*/
- idle->thread.esp = (unsigned long)task_pt_regs(idle);
+ idle->thread.sp = (unsigned long)task_pt_regs(idle);
init_idle(idle, cpu);
return idle;
}
@@ -799,7 +788,7 @@ static int __cpuinit do_boot_cpu(int apicid, int cpu)
per_cpu(current_task, cpu) = idle;
early_gdt_descr.address = (unsigned long)get_cpu_gdt_table(cpu);
- idle->thread.eip = (unsigned long) start_secondary;
+ idle->thread.ip = (unsigned long) start_secondary;
/* start_eip had better be page-aligned! */
start_eip = setup_trampoline();
@@ -807,9 +796,9 @@ static int __cpuinit do_boot_cpu(int apicid, int cpu)
alternatives_smp_switch(1);
/* So we see what's up */
- printk("Booting processor %d/%d eip %lx\n", cpu, apicid, start_eip);
+ printk("Booting processor %d/%d ip %lx\n", cpu, apicid, start_eip);
/* Stack for startup_32 can be just as for start_secondary onwards */
- stack_start.esp = (void *) idle->thread.esp;
+ stack_start.sp = (void *) idle->thread.sp;
irq_ctx_init(cpu);
@@ -1091,7 +1080,7 @@ static void __init smp_boot_cpus(unsigned int max_cpus)
* Allow the user to impress friends.
*/
Dprintk("Before bogomips.\n");
- for (cpu = 0; cpu < NR_CPUS; cpu++)
+ for_each_possible_cpu(cpu)
if (cpu_isset(cpu, cpu_callout_map))
bogosum += cpu_data(cpu).loops_per_jiffy;
printk(KERN_INFO
@@ -1122,7 +1111,7 @@ static void __init smp_boot_cpus(unsigned int max_cpus)
* construct cpu_sibling_map, so that we can tell sibling CPUs
* efficiently.
*/
- for (cpu = 0; cpu < NR_CPUS; cpu++) {
+ for_each_possible_cpu(cpu) {
cpus_clear(per_cpu(cpu_sibling_map, cpu));
cpus_clear(per_cpu(cpu_core_map, cpu));
}
@@ -1296,12 +1285,6 @@ void __init native_smp_cpus_done(unsigned int max_cpus)
setup_ioapic_dest();
#endif
zap_low_mappings();
-#ifndef CONFIG_HOTPLUG_CPU
- /*
- * Disable executability of the SMP trampoline:
- */
- set_kernel_exec((unsigned long)trampoline_base, trampoline_exec);
-#endif
}
void __init smp_intr_init(void)
generated by cgit v1.2.3 (git 2.25.1) at 2024-12-01 08:56:37 +0000