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Diffstat (limited to 'arch/ia64/kernel/iosapic.c')
-rw-r--r--arch/ia64/kernel/iosapic.c48
1 files changed, 1 insertions, 47 deletions
diff --git a/arch/ia64/kernel/iosapic.c b/arch/ia64/kernel/iosapic.c
index 7ded76658d2d..66ec07806ad9 100644
--- a/arch/ia64/kernel/iosapic.c
+++ b/arch/ia64/kernel/iosapic.c
@@ -108,10 +108,6 @@
108#define DBG(fmt...) 108#define DBG(fmt...)
109#endif 109#endif
110 110
111#define NR_PREALLOCATE_RTE_ENTRIES \
112 (PAGE_SIZE / sizeof(struct iosapic_rte_info))
113#define RTE_PREALLOCATED (1)
114
115static DEFINE_SPINLOCK(iosapic_lock); 111static DEFINE_SPINLOCK(iosapic_lock);
116 112
117/* 113/*
@@ -136,7 +132,6 @@ struct iosapic_rte_info {
136 struct list_head rte_list; /* RTEs sharing the same vector */ 132 struct list_head rte_list; /* RTEs sharing the same vector */
137 char rte_index; /* IOSAPIC RTE index */ 133 char rte_index; /* IOSAPIC RTE index */
138 int refcnt; /* reference counter */ 134 int refcnt; /* reference counter */
139 unsigned int flags; /* flags */
140 struct iosapic *iosapic; 135 struct iosapic *iosapic;
141} ____cacheline_aligned; 136} ____cacheline_aligned;
142 137
@@ -155,9 +150,6 @@ static struct iosapic_intr_info {
155 150
156static unsigned char pcat_compat __devinitdata; /* 8259 compatibility flag */ 151static unsigned char pcat_compat __devinitdata; /* 8259 compatibility flag */
157 152
158static int iosapic_kmalloc_ok;
159static LIST_HEAD(free_rte_list);
160
161static inline void 153static inline void
162iosapic_write(struct iosapic *iosapic, unsigned int reg, u32 val) 154iosapic_write(struct iosapic *iosapic, unsigned int reg, u32 val)
163{ 155{
@@ -552,37 +544,6 @@ iosapic_reassign_vector (int irq)
552 } 544 }
553} 545}
554 546
555static struct iosapic_rte_info * __init_refok iosapic_alloc_rte (void)
556{
557 int i;
558 struct iosapic_rte_info *rte;
559 int preallocated = 0;
560
561 if (!iosapic_kmalloc_ok && list_empty(&free_rte_list)) {
562 rte = alloc_bootmem(sizeof(struct iosapic_rte_info) *
563 NR_PREALLOCATE_RTE_ENTRIES);
564 for (i = 0; i < NR_PREALLOCATE_RTE_ENTRIES; i++, rte++)
565 list_add(&rte->rte_list, &free_rte_list);
566 }
567
568 if (!list_empty(&free_rte_list)) {
569 rte = list_entry(free_rte_list.next, struct iosapic_rte_info,
570 rte_list);
571 list_del(&rte->rte_list);
572 preallocated++;
573 } else {
574 rte = kmalloc(sizeof(struct iosapic_rte_info), GFP_ATOMIC);
575 if (!rte)
576 return NULL;
577 }
578
579 memset(rte, 0, sizeof(struct iosapic_rte_info));
580 if (preallocated)
581 rte->flags |= RTE_PREALLOCATED;
582
583 return rte;
584}
585
586static inline int irq_is_shared (int irq) 547static inline int irq_is_shared (int irq)
587{ 548{
588 return (iosapic_intr_info[irq].count > 1); 549 return (iosapic_intr_info[irq].count > 1);
@@ -615,7 +576,7 @@ register_intr (unsigned int gsi, int irq, unsigned char delivery,
615 576
616 rte = find_rte(irq, gsi); 577 rte = find_rte(irq, gsi);
617 if (!rte) { 578 if (!rte) {
618 rte = iosapic_alloc_rte(); 579 rte = kzalloc(sizeof (*rte), GFP_ATOMIC);
619 if (!rte) { 580 if (!rte) {
620 printk(KERN_WARNING "%s: cannot allocate memory\n", 581 printk(KERN_WARNING "%s: cannot allocate memory\n",
621 __func__); 582 __func__);
@@ -1161,10 +1122,3 @@ map_iosapic_to_node(unsigned int gsi_base, int node)
1161 return; 1122 return;
1162} 1123}
1163#endif 1124#endif
1164
1165static int __init iosapic_enable_kmalloc (void)
1166{
1167 iosapic_kmalloc_ok = 1;
1168 return 0;
1169}
1170core_initcall (iosapic_enable_kmalloc);