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x86: Add timer_init to x86_init_ops

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The timer init code is convoluted with several quirks and the paravirt
timer chooser. Figuring out which code path is actually taken is not
for the faint hearted.

Move the numaq TSC quirk to tsc_pre_init x86_init_ops function and
replace the paravirt time chooser and the remaining x86 quirk with a
simple x86_init_ops function.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
This commit is contained in:
Thomas Gleixner
2009-08-19 15:37:03 +02:00
parent 736decac64
commit 845b3944bb
17 changed files with 53 additions and 113 deletions
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43
arch/x86/kernel/setup.c
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@@ -626,10 +626,6 @@ static int __init setup_elfcorehdr(char *arg)
early_param("elfcorehdr", setup_elfcorehdr);
#endif
static struct x86_quirks default_x86_quirks __initdata;
struct x86_quirks *x86_quirks __initdata = &default_x86_quirks;
#ifdef CONFIG_X86_RESERVE_LOW_64K
static int __init dmi_low_memory_corruption(const struct dmi_system_id *d)
{
@@ -1016,45 +1012,6 @@ void __init setup_arch(char **cmdline_p)
#ifdef CONFIG_X86_32
static struct irqaction irq0 = {
.handler = timer_interrupt,
.flags = IRQF_DISABLED | IRQF_NOBALANCING | IRQF_IRQPOLL | IRQF_TIMER,
.name = "timer"
};
/**
* x86_quirk_pre_time_init - do any specific initialisations before.
*
**/
void __init x86_quirk_pre_time_init(void)
{
if (x86_quirks->arch_pre_time_init)
x86_quirks->arch_pre_time_init();
}
/**
* x86_quirk_time_init - do any specific initialisations for the system timer.
*
* Description:
* Must plug the system timer interrupt source at HZ into the IRQ listed
* in irq_vectors.h:TIMER_IRQ
**/
void __init x86_quirk_time_init(void)
{
if (x86_quirks->arch_time_init) {
/*
* A nonzero return code does not mean failure, it means
* that the architecture quirk does not want any
* generic (timer) setup to be performed after this:
*/
if (x86_quirks->arch_time_init())
return;
}
irq0.mask = cpumask_of_cpu(0);
setup_irq(0, &irq0);
}
static struct resource video_ram_resource = {
.name = "Video RAM area",
.start = 0xa0000,