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[PATCH] Remove all ifdefs for local/io apic

Browse source 
IO-APIC or local APIC can only be disabled at runtime anyways and
Kconfig has forced these options on for a long time now.

The Kconfigs are kept only now for the benefit of the shared acpi
boot.c code.

Signed-off-by: Andi Kleen <ak@suse.de>
This commit is contained in:
Andi Kleen 2006-09-26 10:52:29 +02:00 committed by Andi Kleen
parent 5ba5891d44
commit 7f11d8a5ef
18 changed files with 3 additions and 80 deletions
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4
arch/x86_64/kernel/Makefile
View file

@ -20,8 +20,8 @@ obj-$(CONFIG_X86_MSR) += msr.o
obj-$(CONFIG_MICROCODE) += microcode.o
obj-$(CONFIG_X86_CPUID) += cpuid.o
obj-$(CONFIG_SMP) += smp.o smpboot.o trampoline.o
obj-$(CONFIG_X86_LOCAL_APIC) += apic.o nmi.o
obj-$(CONFIG_X86_IO_APIC) += io_apic.o mpparse.o \
obj-y += apic.o nmi.o
obj-y += io_apic.o mpparse.o \
genapic.o genapic_cluster.o genapic_flat.o
obj-$(CONFIG_KEXEC) += machine_kexec.o relocate_kernel.o crash.o
obj-$(CONFIG_CRASH_DUMP) += crash_dump.o

6
arch/x86_64/kernel/apic.c
View file

@ -661,7 +661,6 @@ void __init init_apic_mappings(void)
*/
boot_cpu_id = GET_APIC_ID(apic_read(APIC_ID));
#ifdef CONFIG_X86_IO_APIC
{
unsigned long ioapic_phys, idx = FIX_IO_APIC_BASE_0;
int i;
@ -679,7 +678,6 @@ void __init init_apic_mappings(void)
idx++;
}
}
#endif
}
/*
@ -1129,12 +1127,10 @@ int __init APIC_init_uniprocessor (void)
setup_local_APIC();
#ifdef CONFIG_X86_IO_APIC
if (smp_found_config && !skip_ioapic_setup && nr_ioapics)
setup_IO_APIC();
setup_IO_APIC();
else
nr_ioapics = 0;
#endif
setup_boot_APIC_clock();
check_nmi_watchdog();
return 0;

2
arch/x86_64/kernel/crash.c
View file

@ -194,9 +194,7 @@ void machine_crash_shutdown(struct pt_regs *regs)
if(cpu_has_apic)
disable_local_APIC();
#if defined(CONFIG_X86_IO_APIC)
disable_IO_APIC();
#endif
crash_save_self(regs);
}

2
arch/x86_64/kernel/entry.S
View file

@ -676,7 +676,6 @@ ENTRY(call_function_interrupt)
END(call_function_interrupt)
#endif
#ifdef CONFIG_X86_LOCAL_APIC
ENTRY(apic_timer_interrupt)
apicinterrupt LOCAL_TIMER_VECTOR,smp_apic_timer_interrupt
END(apic_timer_interrupt)
@ -688,7 +687,6 @@ END(error_interrupt)
ENTRY(spurious_interrupt)
apicinterrupt SPURIOUS_APIC_VECTOR,smp_spurious_interrupt
END(spurious_interrupt)
#endif
/*
* Exception entry points.

2
arch/x86_64/kernel/head64.c
View file

@ -111,10 +111,8 @@ void __init x86_64_start_kernel(char * real_mode_data)
if (s != NULL)
numa_setup(s+5);
#endif
#ifdef CONFIG_X86_IO_APIC
if (strstr(saved_command_line, "disableapic"))
disable_apic = 1;
#endif
/* You need early console to see that */
if (__pa_symbol(&_end) >= KERNEL_TEXT_SIZE)
panic("Kernel too big for kernel mapping\n");

9
arch/x86_64/kernel/i8259.c
View file

@ -55,7 +55,6 @@
*/
BUILD_16_IRQS(0x0)
#ifdef CONFIG_X86_LOCAL_APIC
/*
* The IO-APIC gives us many more interrupt sources. Most of these
* are unused but an SMP system is supposed to have enough memory ...
@ -75,8 +74,6 @@ BUILD_16_IRQS(0xc) BUILD_16_IRQS(0xd)
BUILD_15_IRQS(0xe)
#endif
#endif
#undef BUILD_16_IRQS
#undef BUILD_15_IRQS
#undef BI
@ -100,7 +97,6 @@ BUILD_16_IRQS(0xc) BUILD_16_IRQS(0xd)
void (*interrupt[NR_IRQS])(void) = {
IRQLIST_16(0x0),
#ifdef CONFIG_X86_IO_APIC
IRQLIST_16(0x1), IRQLIST_16(0x2), IRQLIST_16(0x3),
IRQLIST_16(0x4), IRQLIST_16(0x5), IRQLIST_16(0x6), IRQLIST_16(0x7),
IRQLIST_16(0x8), IRQLIST_16(0x9), IRQLIST_16(0xa), IRQLIST_16(0xb),
@ -110,7 +106,6 @@ void (*interrupt[NR_IRQS])(void) = {
, IRQLIST_15(0xe)
#endif
#endif
};
#undef IRQ
@ -453,9 +448,7 @@ void __init init_ISA_irqs (void)
{
int i;
#ifdef CONFIG_X86_LOCAL_APIC
init_bsp_APIC();
#endif
init_8259A(0);
for (i = 0; i < NR_IRQS; i++) {
@ -581,14 +574,12 @@ void __init init_IRQ(void)
set_intr_gate(THERMAL_APIC_VECTOR, thermal_interrupt);
set_intr_gate(THRESHOLD_APIC_VECTOR, threshold_interrupt);
#ifdef CONFIG_X86_LOCAL_APIC
/* self generated IPI for local APIC timer */
set_intr_gate(LOCAL_TIMER_VECTOR, apic_timer_interrupt);
/* IPI vectors for APIC spurious and error interrupts */
set_intr_gate(SPURIOUS_APIC_VECTOR, spurious_interrupt);
set_intr_gate(ERROR_APIC_VECTOR, error_interrupt);
#endif
/*
* Set the clock to HZ Hz, we already have a valid

6
arch/x86_64/kernel/irq.c
View file

@ -20,11 +20,9 @@
#include <asm/idle.h>
atomic_t irq_err_count;
#ifdef CONFIG_X86_IO_APIC
#ifdef APIC_MISMATCH_DEBUG
atomic_t irq_mis_count;
#endif
#endif
#ifdef CONFIG_DEBUG_STACKOVERFLOW
/*
@ -92,17 +90,13 @@ int show_interrupts(struct seq_file *p, void *v)
for_each_online_cpu(j)
seq_printf(p, "%10u ", cpu_pda(j)->__nmi_count);
seq_putc(p, '\n');
#ifdef CONFIG_X86_LOCAL_APIC
seq_printf(p, "LOC: ");
for_each_online_cpu(j)
seq_printf(p, "%10u ", cpu_pda(j)->apic_timer_irqs);
seq_putc(p, '\n');
#endif
seq_printf(p, "ERR: %10u\n", atomic_read(&irq_err_count));
#ifdef CONFIG_X86_IO_APIC
#ifdef APIC_MISMATCH_DEBUG
seq_printf(p, "MIS: %10u\n", atomic_read(&irq_mis_count));
#endif
#endif
}
return 0;

9
arch/x86_64/kernel/mpparse.c
View file

@ -74,14 +74,10 @@ physid_mask_t phys_cpu_present_map = PHYSID_MASK_NONE;
/* ACPI MADT entry parsing functions */
#ifdef CONFIG_ACPI
extern struct acpi_boot_flags acpi_boot;
#ifdef CONFIG_X86_LOCAL_APIC
extern int acpi_parse_lapic (acpi_table_entry_header *header);
extern int acpi_parse_lapic_addr_ovr (acpi_table_entry_header *header);
extern int acpi_parse_lapic_nmi (acpi_table_entry_header *header);
#endif /*CONFIG_X86_LOCAL_APIC*/
#ifdef CONFIG_X86_IO_APIC
extern int acpi_parse_ioapic (acpi_table_entry_header *header);
#endif /*CONFIG_X86_IO_APIC*/
#endif /*CONFIG_ACPI*/
u8 bios_cpu_apicid[NR_CPUS] = { [0 ... NR_CPUS-1] = BAD_APICID };
@ -661,9 +657,7 @@ void __init find_intel_smp (void)
*/
void __init find_smp_config (void)
{
#ifdef CONFIG_X86_LOCAL_APIC
find_intel_smp();
#endif
}
@ -717,8 +711,6 @@ void __cpuinit mp_register_lapic (
MP_processor_info(&processor);
}
#ifdef CONFIG_X86_IO_APIC
#define MP_ISA_BUS 0
#define MP_MAX_IOAPIC_PIN 127
@ -997,5 +989,4 @@ int mp_register_gsi(u32 gsi, int triggering, int polarity)
return gsi;
}
#endif /*CONFIG_X86_IO_APIC*/
#endif /*CONFIG_ACPI*/

6
arch/x86_64/kernel/setup.c
View file

@ -340,10 +340,8 @@ static __init void parse_cmdline_early (char ** cmdline_p)
else if (fullarg(from, "acpi=strict")) {
acpi_strict = 1;
}
#ifdef CONFIG_X86_IO_APIC
else if (fullarg(from, "acpi_skip_timer_override"))
acpi_skip_timer_override = 1;
#endif
#endif
if (fullarg(from, "disable_timer_pin_1"))
@ -625,12 +623,10 @@ void __init setup_arch(char **cmdline_p)
*/
acpi_reserve_bootmem();
#endif
#ifdef CONFIG_X86_LOCAL_APIC
/*
* Find and reserve possible boot-time SMP configuration:
*/
find_smp_config();
#endif
#ifdef CONFIG_BLK_DEV_INITRD
if (LOADER_TYPE && INITRD_START) {
if (INITRD_START + INITRD_SIZE <= (end_pfn << PAGE_SHIFT)) {
@ -674,14 +670,12 @@ void __init setup_arch(char **cmdline_p)
init_cpu_to_node();
#ifdef CONFIG_X86_LOCAL_APIC
/*
* get boot-time SMP configuration:
*/
if (smp_found_config)
get_smp_config();
init_apic_mappings();
#endif
/*
* Request address space for all standard RAM and ROM resources

5
arch/x86_64/kernel/smpboot.c
View file

@ -1175,13 +1175,8 @@ int __cpuinit __cpu_up(unsigned int cpu)
void __init smp_cpus_done(unsigned int max_cpus)
{
smp_cleanup_boot();
#ifdef CONFIG_X86_IO_APIC
setup_ioapic_dest();
#endif
check_nmi_watchdog();
time_init_gtod();
}

8
arch/x86_64/kernel/time.c
View file

@ -41,9 +41,7 @@
#include <asm/sections.h>
#include <linux/cpufreq.h>
#include <linux/hpet.h>
#ifdef CONFIG_X86_LOCAL_APIC
#include <asm/apic.h>
#endif
#ifdef CONFIG_CPU_FREQ
static void cpufreq_delayed_get(void);
@ -438,12 +436,8 @@ void main_timer_handler(struct pt_regs *regs)
* have to call the local interrupt handler.
*/
#ifndef CONFIG_X86_LOCAL_APIC
profile_tick(CPU_PROFILING, regs);
#else
if (!using_apic_timer)
smp_local_timer_interrupt(regs);
#endif
/*
* If we have an externally synchronized Linux clock, then update CMOS clock
@ -467,10 +461,8 @@ static irqreturn_t timer_interrupt(int irq, void *dev_id, struct pt_regs *regs)
if (apic_runs_main_timer > 1)
return IRQ_HANDLED;
main_timer_handler(regs);
#ifdef CONFIG_X86_LOCAL_APIC
if (using_apic_timer)
smp_send_timer_broadcast_ipi();
#endif
return IRQ_HANDLED;
}

2
arch/x86_64/kernel/traps.c
View file

@ -788,7 +788,6 @@ asmlinkage __kprobes void default_do_nmi(struct pt_regs *regs)
if (notify_die(DIE_NMI_IPI, "nmi_ipi", regs, reason, 2, SIGINT)
== NOTIFY_STOP)
return;
#ifdef CONFIG_X86_LOCAL_APIC
/*
* Ok, so this is none of the documented NMI sources,
* so it must be the NMI watchdog.
@ -796,7 +795,6 @@ asmlinkage __kprobes void default_do_nmi(struct pt_regs *regs)
if (nmi_watchdog_tick(regs,reason))
return;
if (!do_nmi_callback(regs,cpu))
#endif
unknown_nmi_error(reason, regs);
return;

4
include/asm-x86_64/apic.h
View file

@ -29,8 +29,6 @@ extern int apic_runs_main_timer;
printk(s, ##a); \
} while (0)
#ifdef CONFIG_X86_LOCAL_APIC
struct pt_regs;
/*
@ -104,8 +102,6 @@ void switch_ipi_to_APIC_timer(void *cpumask);
#define ARCH_APICTIMER_STOPS_ON_C3 1
#endif /* CONFIG_X86_LOCAL_APIC */
extern unsigned boot_cpu_id;
#endif /* __ASM_APIC_H */

4
include/asm-x86_64/fixmap.h
View file

@ -37,13 +37,9 @@ enum fixed_addresses {
VSYSCALL_FIRST_PAGE = VSYSCALL_LAST_PAGE + ((VSYSCALL_END-VSYSCALL_START) >> PAGE_SHIFT) - 1,
VSYSCALL_HPET,
FIX_HPET_BASE,
#ifdef CONFIG_X86_LOCAL_APIC
FIX_APIC_BASE, /* local (CPU) APIC) -- required for SMP or not */
#endif
#ifdef CONFIG_X86_IO_APIC
FIX_IO_APIC_BASE_0,
FIX_IO_APIC_BASE_END = FIX_IO_APIC_BASE_0 + MAX_IO_APICS-1,
#endif
__end_of_fixed_addresses
};

6
include/asm-x86_64/io_apic.h
View file

@ -10,8 +10,6 @@
* Copyright (C) 1997, 1998, 1999, 2000 Ingo Molnar
*/
#ifdef CONFIG_X86_IO_APIC
#ifdef CONFIG_PCI_MSI
static inline int use_pci_vector(void) {return 1;}
static inline void disable_edge_ioapic_vector(unsigned int vector) { }
@ -209,10 +207,6 @@ extern int timer_uses_ioapic_pin_0;
extern int sis_apic_bug; /* dummy */
#else /* !CONFIG_X86_IO_APIC */
#define io_apic_assign_pci_irqs 0
#endif
extern int assign_irq_vector(int irq);
void enable_NMI_through_LVT0 (void * dummy);

2
include/asm-x86_64/irq.h
View file

@ -44,9 +44,7 @@ static __inline__ int irq_canonicalize(int irq)
return ((irq == 2) ? 9 : irq);
}
#ifdef CONFIG_X86_LOCAL_APIC
#define ARCH_HAS_NMI_WATCHDOG /* See include/linux/nmi.h */
#endif
#ifdef CONFIG_HOTPLUG_CPU
#include <linux/cpumask.h>

2
include/asm-x86_64/mpspec.h
View file

@ -184,12 +184,10 @@ extern int pic_mode;
extern void mp_register_lapic (u8 id, u8 enabled);
extern void mp_register_lapic_address (u64 address);
#ifdef CONFIG_X86_IO_APIC
extern void mp_register_ioapic (u8 id, u32 address, u32 gsi_base);
extern void mp_override_legacy_irq (u8 bus_irq, u8 polarity, u8 trigger, u32 gsi);
extern void mp_config_acpi_legacy_irqs (void);
extern int mp_register_gsi (u32 gsi, int triggering, int polarity);
#endif /*CONFIG_X86_IO_APIC*/
#endif
extern int using_apic_timer;

4
include/asm-x86_64/smp.h
View file

@ -9,15 +9,11 @@
#include <linux/bitops.h>
extern int disable_apic;
#ifdef CONFIG_X86_LOCAL_APIC
#include <asm/fixmap.h>
#include <asm/mpspec.h>
#ifdef CONFIG_X86_IO_APIC
#include <asm/io_apic.h>
#endif
#include <asm/apic.h>
#include <asm/thread_info.h>
#endif
#ifdef CONFIG_SMP