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Merge branch 'linus' into cpus4096

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Conflicts:

	arch/x86/xen/smp.c
	kernel/sched_rt.c
	net/iucv/iucv.c

Signed-off-by: Ingo Molnar <mingo@elte.hu>
This commit is contained in:
Ingo Molnar
2008-07-16 00:29:07 +02:00
parent 9982fbface 63cf13b77a
commit 82638844d9
2558 changed files with 166841 additions and 99878 deletions
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216
arch/x86/kernel/smpboot.c
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@@ -59,7 +59,6 @@
#include <asm/pgtable.h>
#include <asm/tlbflush.h>
#include <asm/mtrr.h>
#include <asm/nmi.h>
#include <asm/vmi.h>
#include <asm/genapic.h>
#include <linux/mc146818rtc.h>
@@ -68,22 +67,6 @@
#include <mach_wakecpu.h>
#include <smpboot_hooks.h>
/*
* FIXME: For x86_64, those are defined in other files. But moving them here,
* would make the setup areas dependent on smp, which is a loss. When we
* integrate apic between arches, we can probably do a better job, but
* right now, they'll stay here -- glommer
*/
/* which logical CPU number maps to which CPU (physical APIC ID) */
u16 x86_cpu_to_apicid_init[NR_CPUS] __initdata =
{ [0 ... NR_CPUS-1] = BAD_APICID };
void *x86_cpu_to_apicid_early_ptr;
u16 x86_bios_cpu_apicid_init[NR_CPUS] __initdata
= { [0 ... NR_CPUS-1] = BAD_APICID };
void *x86_bios_cpu_apicid_early_ptr;
#ifdef CONFIG_X86_32
u8 apicid_2_node[MAX_APICID];
static int low_mappings;
@@ -198,13 +181,12 @@ static void map_cpu_to_logical_apicid(void)
map_cpu_to_node(cpu, node);
}
static void unmap_cpu_to_logical_apicid(int cpu)
void numa_remove_cpu(int cpu)
{
cpu_2_logical_apicid[cpu] = BAD_APICID;
unmap_cpu_to_node(cpu);
}
#else
#define unmap_cpu_to_logical_apicid(cpu) do {} while (0)
#define map_cpu_to_logical_apicid() do {} while (0)
#endif
@@ -345,19 +327,12 @@ static void __cpuinit start_secondary(void *unused)
* lock helps us to not include this cpu in a currently in progress
* smp_call_function().
*/
lock_ipi_call_lock();
#ifdef CONFIG_X86_64
spin_lock(&vector_lock);
/* Setup the per cpu irq handling data structures */
__setup_vector_irq(smp_processor_id());
/*
* Allow the master to continue.
*/
spin_unlock(&vector_lock);
ipi_call_lock_irq();
#ifdef CONFIG_X86_IO_APIC
setup_vector_irq(smp_processor_id());
#endif
cpu_set(smp_processor_id(), cpu_online_map);
unlock_ipi_call_lock();
ipi_call_unlock_irq();
per_cpu(cpu_state, smp_processor_id()) = CPU_ONLINE;
setup_secondary_clock();
@@ -366,31 +341,8 @@ static void __cpuinit start_secondary(void *unused)
cpu_idle();
}
#ifdef CONFIG_X86_32
/*
* Everything has been set up for the secondary
* CPUs - they just need to reload everything
* from the task structure
* This function must not return.
*/
void __devinit initialize_secondary(void)
{
/*
* We don't actually need to load the full TSS,
* basically just the stack pointer and the ip.
*/
asm volatile(
"movl %0,%%esp\n\t"
"jmp *%1"
:
:"m" (current->thread.sp), "m" (current->thread.ip));
}
#endif
static void __cpuinit smp_apply_quirks(struct cpuinfo_x86 *c)
{
#ifdef CONFIG_X86_32
/*
* Mask B, Pentium, but not Pentium MMX
*/
@@ -440,7 +392,6 @@ static void __cpuinit smp_apply_quirks(struct cpuinfo_x86 *c)
valid_k7:
;
#endif
}
static void __cpuinit smp_checks(void)
@@ -555,23 +506,6 @@ cpumask_t cpu_coregroup_map(int cpu)
return c->llc_shared_map;
}
#ifdef CONFIG_X86_32
/*
* We are called very early to get the low memory for the
* SMP bootup trampoline page.
*/
void __init smp_alloc_memory(void)
{
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();
}
#endif
static void impress_friends(void)
{
int cpu;
@@ -748,11 +682,7 @@ wakeup_secondary_cpu(int phys_apicid, unsigned long start_eip)
* target processor state.
*/
startup_ipi_hook(phys_apicid, (unsigned long) start_secondary,
#ifdef CONFIG_X86_64
(unsigned long)init_rsp);
#else
(unsigned long)stack_start.sp);
#endif
/*
* Run STARTUP IPI loop.
@@ -832,6 +762,45 @@ static void __cpuinit do_fork_idle(struct work_struct *work)
complete(&c_idle->done);
}
#ifdef CONFIG_X86_64
/*
* Allocate node local memory for the AP pda.
*
* Must be called after the _cpu_pda pointer table is initialized.
*/
static int __cpuinit get_local_pda(int cpu)
{
struct x8664_pda *oldpda, *newpda;
unsigned long size = sizeof(struct x8664_pda);
int node = cpu_to_node(cpu);
if (cpu_pda(cpu) && !cpu_pda(cpu)->in_bootmem)
return 0;
oldpda = cpu_pda(cpu);
newpda = kmalloc_node(size, GFP_ATOMIC, node);
if (!newpda) {
printk(KERN_ERR "Could not allocate node local PDA "
"for CPU %d on node %d\n", cpu, node);
if (oldpda)
return 0; /* have a usable pda */
else
return -1;
}
if (oldpda) {
memcpy(newpda, oldpda, size);
if (!after_bootmem)
free_bootmem((unsigned long)oldpda, size);
}
newpda->in_bootmem = 0;
cpu_pda(cpu) = newpda;
return 0;
}
#endif /* CONFIG_X86_64 */
static int __cpuinit do_boot_cpu(int apicid, int cpu)
/*
* NOTE - on most systems this is a PHYSICAL apic ID, but on multiquad
@@ -848,28 +817,14 @@ static int __cpuinit do_boot_cpu(int apicid, int cpu)
.done = COMPLETION_INITIALIZER_ONSTACK(c_idle.done),
};
INIT_WORK(&c_idle.work, do_fork_idle);
#ifdef CONFIG_X86_64
/* allocate memory for gdts of secondary cpus. Hotplug is considered */
if (!cpu_gdt_descr[cpu].address &&
!(cpu_gdt_descr[cpu].address = get_zeroed_page(GFP_KERNEL))) {
printk(KERN_ERR "Failed to allocate GDT for CPU %d\n", cpu);
return -1;
}
#ifdef CONFIG_X86_64
/* Allocate node local memory for AP pdas */
if (cpu_pda(cpu) == &boot_cpu_pda[cpu]) {
struct x8664_pda *newpda, *pda;
int node = cpu_to_node(cpu);
pda = cpu_pda(cpu);
newpda = kmalloc_node(sizeof(struct x8664_pda), GFP_ATOMIC,
node);
if (newpda) {
memcpy(newpda, pda, sizeof(struct x8664_pda));
cpu_pda(cpu) = newpda;
} else
printk(KERN_ERR
"Could not allocate node local PDA for CPU %d on node %d\n",
cpu, node);
if (cpu > 0) {
boot_error = get_local_pda(cpu);
if (boot_error)
goto restore_state;
/* if can't get pda memory, can't start cpu */
}
#endif
@@ -905,18 +860,15 @@ do_rest:
#ifdef CONFIG_X86_32
per_cpu(current_task, cpu) = c_idle.idle;
init_gdt(cpu);
early_gdt_descr.address = (unsigned long)get_cpu_gdt_table(cpu);
c_idle.idle->thread.ip = (unsigned long) start_secondary;
/* Stack for startup_32 can be just as for start_secondary onwards */
stack_start.sp = (void *) c_idle.idle->thread.sp;
irq_ctx_init(cpu);
#else
cpu_pda(cpu)->pcurrent = c_idle.idle;
init_rsp = c_idle.idle->thread.sp;
load_sp0(&per_cpu(init_tss, cpu), &c_idle.idle->thread);
initial_code = (unsigned long)start_secondary;
clear_tsk_thread_flag(c_idle.idle, TIF_FORK);
#endif
early_gdt_descr.address = (unsigned long)get_cpu_gdt_table(cpu);
initial_code = (unsigned long)start_secondary;
stack_start.sp = (void *) c_idle.idle->thread.sp;
/* start_ip had better be page-aligned! */
start_ip = setup_trampoline();
@@ -987,13 +939,12 @@ do_rest:
inquire_remote_apic(apicid);
}
}
#ifdef CONFIG_X86_64
restore_state:
#endif
if (boot_error) {
/* Try to put things back the way they were before ... */
unmap_cpu_to_logical_apicid(cpu);
#ifdef CONFIG_X86_64
clear_node_cpumask(cpu); /* was set by numa_add_cpu */
#endif
numa_remove_cpu(cpu); /* was set by numa_add_cpu */
cpu_clear(cpu, cpu_callout_map); /* was set by do_boot_cpu() */
cpu_clear(cpu, cpu_initialized); /* was set by cpu_init() */
cpu_clear(cpu, cpu_present_map);
@@ -1087,14 +1038,12 @@ static __init void disable_smp(void)
{
cpu_present_map = cpumask_of_cpu(0);
cpu_possible_map = cpumask_of_cpu(0);
#ifdef CONFIG_X86_32
smpboot_clear_io_apic_irqs();
#endif
if (smp_found_config)
phys_cpu_present_map =
physid_mask_of_physid(boot_cpu_physical_apicid);
physid_set_mask_of_physid(boot_cpu_physical_apicid, &phys_cpu_present_map);
else
phys_cpu_present_map = physid_mask_of_physid(0);
physid_set_mask_of_physid(0, &phys_cpu_present_map);
map_cpu_to_logical_apicid();
cpu_set(0, per_cpu(cpu_sibling_map, 0));
cpu_set(0, per_cpu(cpu_core_map, 0));
@@ -1157,12 +1106,12 @@ static int __init smp_sanity_check(unsigned max_cpus)
* If SMP should be disabled, then really disable it!
*/
if (!max_cpus) {
printk(KERN_INFO "SMP mode deactivated,"
"forcing use of dummy APIC emulation.\n");
printk(KERN_INFO "SMP mode deactivated.\n");
smpboot_clear_io_apic();
#ifdef CONFIG_X86_32
localise_nmi_watchdog();
connect_bsp_APIC();
#endif
setup_local_APIC();
end_local_APIC_setup();
return -1;
@@ -1190,7 +1139,6 @@ static void __init smp_cpu_index_default(void)
void __init native_smp_prepare_cpus(unsigned int max_cpus)
{
preempt_disable();
nmi_watchdog_default();
smp_cpu_index_default();
current_cpu_data = boot_cpu_data;
cpu_callin_map = cpumask_of_cpu(0);
@@ -1217,9 +1165,8 @@ void __init native_smp_prepare_cpus(unsigned int max_cpus)
}
preempt_enable();
#ifdef CONFIG_X86_32
connect_bsp_APIC();
#endif
/*
* Switch from PIC to APIC mode.
*/
@@ -1257,8 +1204,8 @@ void __init native_smp_prepare_boot_cpu(void)
int me = smp_processor_id();
#ifdef CONFIG_X86_32
init_gdt(me);
switch_to_new_gdt();
#endif
switch_to_new_gdt();
/* already set me in cpu_online_map in boot_cpu_init() */
cpu_set(me, cpu_callout_map);
per_cpu(cpu_state, me) = CPU_ONLINE;
@@ -1278,23 +1225,6 @@ void __init native_smp_cpus_done(unsigned int max_cpus)
#ifdef CONFIG_HOTPLUG_CPU
# ifdef CONFIG_X86_32
void cpu_exit_clear(void)
{
int cpu = raw_smp_processor_id();
idle_task_exit();
cpu_uninit();
irq_ctx_exit(cpu);
cpu_clear(cpu, cpu_callout_map);
cpu_clear(cpu, cpu_callin_map);
unmap_cpu_to_logical_apicid(cpu);
}
# endif /* CONFIG_X86_32 */
static void remove_siblinginfo(int cpu)
{
int sibling;
@@ -1348,12 +1278,20 @@ __init void prefill_possible_map(void)
int i;
int possible;
/* no processor from mptable or madt */
if (!num_processors)
num_processors = 1;
#ifdef CONFIG_HOTPLUG_CPU
if (additional_cpus == -1) {
if (disabled_cpus > 0)
additional_cpus = disabled_cpus;
else
additional_cpus = 0;
}
#else
additional_cpus = 0;
#endif
possible = num_processors + additional_cpus;
if (possible > NR_CPUS)
possible = NR_CPUS;
@@ -1363,18 +1301,18 @@ __init void prefill_possible_map(void)
for (i = 0; i < possible; i++)
cpu_set(i, cpu_possible_map);
nr_cpu_ids = possible;
}
static void __ref remove_cpu_from_maps(int cpu)
{
cpu_clear(cpu, cpu_online_map);
#ifdef CONFIG_X86_64
cpu_clear(cpu, cpu_callout_map);
cpu_clear(cpu, cpu_callin_map);
/* was set by cpu_init() */
clear_bit(cpu, (unsigned long *)&cpu_initialized);
clear_node_cpumask(cpu);
#endif
numa_remove_cpu(cpu);
}
int __cpu_disable(void)