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[IA64] Initialize interrupts later (from init_IRQ())

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Thomas Gleixner is cleaning up the generic irq code, and ia64 ran
into problems because it calls register_intr() before early_irq_init()
is called.  Move the call to acpi_boot_init() from setup_arch() to
init_IRQ().

As a bonus - moving the call later means we no longer need the
hacks in iosapic.c to switch between the bootmem and regular
allocator - we can just used kzalloc() for allocation.

Signed-off-by: Tony Luck <tony.luck@intel.com>
This commit is contained in:
Tony Luck 2010-10-05 15:41:25 -07:00
parent 899611ee7d
commit 4de0a75948
3 changed files with 5 additions and 51 deletions
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48
arch/ia64/kernel/iosapic.c
View File

@ -108,10 +108,6 @@
#define DBG(fmt...)
#endif
#define NR_PREALLOCATE_RTE_ENTRIES \
(PAGE_SIZE / sizeof(struct iosapic_rte_info))
#define RTE_PREALLOCATED (1)
static DEFINE_SPINLOCK(iosapic_lock);
/*
@ -136,7 +132,6 @@ struct iosapic_rte_info {
struct list_head rte_list; /* RTEs sharing the same vector */
char rte_index; /* IOSAPIC RTE index */
int refcnt; /* reference counter */
unsigned int flags; /* flags */
struct iosapic *iosapic;
} ____cacheline_aligned;
@ -155,9 +150,6 @@ static struct iosapic_intr_info {
static unsigned char pcat_compat __devinitdata; /* 8259 compatibility flag */
static int iosapic_kmalloc_ok;
static LIST_HEAD(free_rte_list);
static inline void
iosapic_write(struct iosapic *iosapic, unsigned int reg, u32 val)
{
@ -552,37 +544,6 @@ iosapic_reassign_vector (int irq)
}
}
static struct iosapic_rte_info * __init_refok iosapic_alloc_rte (void)
{
int i;
struct iosapic_rte_info *rte;
int preallocated = 0;
if (!iosapic_kmalloc_ok && list_empty(&free_rte_list)) {
rte = alloc_bootmem(sizeof(struct iosapic_rte_info) *
NR_PREALLOCATE_RTE_ENTRIES);
for (i = 0; i < NR_PREALLOCATE_RTE_ENTRIES; i++, rte++)
list_add(&rte->rte_list, &free_rte_list);
}
if (!list_empty(&free_rte_list)) {
rte = list_entry(free_rte_list.next, struct iosapic_rte_info,
rte_list);
list_del(&rte->rte_list);
preallocated++;
} else {
rte = kmalloc(sizeof(struct iosapic_rte_info), GFP_ATOMIC);
if (!rte)
return NULL;
}
memset(rte, 0, sizeof(struct iosapic_rte_info));
if (preallocated)
rte->flags |= RTE_PREALLOCATED;
return rte;
}
static inline int irq_is_shared (int irq)
{
return (iosapic_intr_info[irq].count > 1);
@ -615,7 +576,7 @@ register_intr (unsigned int gsi, int irq, unsigned char delivery,
rte = find_rte(irq, gsi);
if (!rte) {
rte = iosapic_alloc_rte();
rte = kzalloc(sizeof (*rte), GFP_ATOMIC);
if (!rte) {
printk(KERN_WARNING "%s: cannot allocate memory\n",
__func__);
@ -1161,10 +1122,3 @@ map_iosapic_to_node(unsigned int gsi_base, int node)
return;
}
#endif
static int __init iosapic_enable_kmalloc (void)
{
iosapic_kmalloc_ok = 1;
return 0;
}
core_initcall (iosapic_enable_kmalloc);

4
arch/ia64/kernel/irq_ia64.c
View File

@ -30,6 +30,7 @@
#include <linux/bitops.h>
#include <linux/irq.h>
#include <linux/ratelimit.h>
#include <linux/acpi.h>
#include <asm/delay.h>
#include <asm/intrinsics.h>
@ -650,6 +651,9 @@ ia64_native_register_ipi(void)
void __init
init_IRQ (void)
{
#ifdef CONFIG_ACPI
acpi_boot_init();
#endif
ia64_register_ipi();
register_percpu_irq(IA64_SPURIOUS_INT_VECTOR, NULL);
#ifdef CONFIG_SMP

4
arch/ia64/kernel/setup.c
View File

@ -594,10 +594,6 @@ setup_arch (char **cmdline_p)
cpu_init(); /* initialize the bootstrap CPU */
mmu_context_init(); /* initialize context_id bitmap */
#ifdef CONFIG_ACPI
acpi_boot_init();
#endif
paravirt_banner();
paravirt_arch_setup_console(cmdline_p);