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x86: untable __init references between IO data

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Earlier patch added IO APIC setup into local APIC setup. This caused
modpost warnings. Fix them by untangling setup_local_APIC() and splitting
it into smaller functions. The IO APIC initialization is only called
for the BP init.

Also removed some outdated debugging code and minor cleanup.

[ tglx: arch/x86 adaptation ]

Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
This commit is contained in:
Andi Kleen 2008-01-30 13:30:40 +01:00 committed by Ingo Molnar
parent 3f6e5a12b8
commit 739f33b38b
3 changed files with 32 additions and 23 deletions
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46
arch/x86/kernel/apic_64.c
View file

@ -677,7 +677,7 @@ void __init init_bsp_APIC(void)
*/
void __cpuinit setup_local_APIC(void)
{
unsigned int value, maxlvt;
unsigned int value;
int i, j;
value = apic_read(APIC_LVR);
@ -773,32 +773,23 @@ void __cpuinit setup_local_APIC(void)
else
value = APIC_DM_NMI | APIC_LVT_MASKED;
apic_write(APIC_LVT1, value);
}
void __cpuinit lapic_setup_esr(void)
{
unsigned maxlvt = lapic_get_maxlvt();
apic_write(APIC_LVTERR, ERROR_APIC_VECTOR);
/*
* Now enable IO-APICs, actually call clear_IO_APIC
* We need clear_IO_APIC before enabling vector on BP
* spec says clear errors after enabling vector.
*/
if (!smp_processor_id() && !skip_ioapic_setup && nr_ioapics)
enable_IO_APIC();
{
unsigned oldvalue;
maxlvt = lapic_get_maxlvt();
oldvalue = apic_read(APIC_ESR);
value = ERROR_APIC_VECTOR; // enables sending errors
apic_write(APIC_LVTERR, value);
/*
* spec says clear errors after enabling vector.
*/
if (maxlvt > 3)
apic_write(APIC_ESR, 0);
value = apic_read(APIC_ESR);
if (value != oldvalue)
apic_printk(APIC_VERBOSE,
"ESR value after enabling vector: %08x, after %08x\n",
oldvalue, value);
}
if (maxlvt > 3)
apic_write(APIC_ESR, 0);
}
void __cpuinit end_local_APIC_setup(void)
{
lapic_setup_esr();
nmi_watchdog_default();
setup_apic_nmi_watchdog(NULL);
apic_pm_activate();
@ -879,6 +870,15 @@ int __init APIC_init_uniprocessor(void)
setup_local_APIC();
/*
* Now enable IO-APICs, actually call clear_IO_APIC
* We need clear_IO_APIC before enabling vector on BP
*/
if (!skip_ioapic_setup && nr_ioapics)
enable_IO_APIC();
end_local_APIC_setup();
if (smp_found_config && !skip_ioapic_setup && nr_ioapics)
setup_IO_APIC();
else

8
arch/x86/kernel/smpboot_64.c
View file

@ -210,6 +210,7 @@ void __cpuinit smp_callin(void)
Dprintk("CALLIN, before setup_local_APIC().\n");
setup_local_APIC();
end_local_APIC_setup();
/*
* Get our bogomips.
@ -884,6 +885,13 @@ void __init smp_prepare_cpus(unsigned int max_cpus)
*/
setup_local_APIC();
/*
* Enable IO APIC before setting up error vector
*/
if (!skip_ioapic_setup && nr_ioapics)
enable_IO_APIC();
end_local_APIC_setup();
if (GET_APIC_ID(apic_read(APIC_ID)) != boot_cpu_id) {
panic("Boot APIC ID in local APIC unexpected (%d vs %d)",
GET_APIC_ID(apic_read(APIC_ID)), boot_cpu_id);

1
include/asm-x86/apic.h
View file

@ -112,6 +112,7 @@ extern void cache_APIC_registers(void);
extern void sync_Arb_IDs(void);
extern void init_bsp_APIC(void);
extern void setup_local_APIC(void);
extern void end_local_APIC_setup(void);
extern void init_apic_mappings(void);
extern void setup_boot_APIC_clock(void);
extern void setup_secondary_APIC_clock(void);