x86_64: rename irq_desc/irq_desc_alloc
change names: irq_desc() ==> irq_desc_alloc __irq_desc() ==> irq_desc Also split a few of the uses in lowlevel x86 code. v2: need to check if desc is null in smp_irq_move_cleanup Signed-off-by: Yinghai Lu <yhlu.kernel@gmail.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
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1d5f6b36c4
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cb5bc83225
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@ -1124,7 +1124,12 @@ static void ioapic_register_intr(int irq, unsigned long trigger)
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{
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struct irq_desc *desc;
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desc = irq_to_desc(irq);
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/* first time to use this irq_desc */
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if (irq < 16)
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desc = irq_to_desc(irq);
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else
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desc = irq_to_desc_alloc(irq);
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if (trigger)
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desc->status |= IRQ_LEVEL;
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else
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@ -1919,6 +1924,9 @@ asmlinkage void smp_irq_move_cleanup_interrupt(void)
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irq = __get_cpu_var(vector_irq)[vector];
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desc = irq_to_desc(irq);
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if (!desc)
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continue;
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cfg = irq_cfg(irq);
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spin_lock(&desc->lock);
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if (!cfg->move_cleanup_count)
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@ -83,7 +83,7 @@ int show_interrupts(struct seq_file *p, void *v)
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if (i < nr_irqs) {
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unsigned any_count = 0;
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struct irq_desc *desc = __irq_to_desc(i);
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struct irq_desc *desc = irq_to_desc(i);
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if (!desc)
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return 0;
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@ -206,7 +206,7 @@ asmlinkage unsigned int do_IRQ(struct pt_regs *regs)
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stack_overflow_check(regs);
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#endif
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desc = __irq_to_desc(irq);
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desc = irq_to_desc(irq);
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if (likely(desc))
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generic_handle_irq_desc(irq, desc);
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else {
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@ -143,7 +143,8 @@ void __init init_ISA_irqs(void)
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init_8259A(0);
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for (i = 0; i < 16; i++) {
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struct irq_desc *desc = irq_to_desc(i);
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/* first time call this irq_desc */
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struct irq_desc *desc = irq_to_desc_alloc(i);
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desc->status = IRQ_DISABLED;
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desc->action = NULL;
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@ -191,7 +191,7 @@ struct irq_desc {
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} ____cacheline_internodealigned_in_smp;
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extern struct irq_desc *irq_to_desc(unsigned int irq);
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extern struct irq_desc *__irq_to_desc(unsigned int irq);
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extern struct irq_desc *irq_to_desc_alloc(unsigned int irq);
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#ifndef CONFIG_HAVE_SPARSE_IRQ
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@ -27,7 +27,8 @@ void dynamic_irq_init(unsigned int irq)
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struct irq_desc *desc;
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unsigned long flags;
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desc = irq_to_desc(irq);
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/* first time to use this irq_desc */
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desc = irq_to_desc_alloc(irq);
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if (!desc) {
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WARN(1, KERN_ERR "Trying to initialize invalid IRQ%d\n", irq);
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return;
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@ -60,7 +61,7 @@ void dynamic_irq_cleanup(unsigned int irq)
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struct irq_desc *desc;
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unsigned long flags;
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desc = __irq_to_desc(irq);
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desc = irq_to_desc(irq);
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if (!desc) {
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WARN(1, KERN_ERR "Trying to cleanup invalid IRQ%d\n", irq);
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return;
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@ -92,7 +93,7 @@ int set_irq_chip(unsigned int irq, struct irq_chip *chip)
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struct irq_desc *desc;
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unsigned long flags;
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desc = __irq_to_desc(irq);
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desc = irq_to_desc(irq);
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if (!desc) {
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WARN(1, KERN_ERR "Trying to install chip for IRQ%d\n", irq);
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return -EINVAL;
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@ -122,7 +123,7 @@ int set_irq_type(unsigned int irq, unsigned int type)
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unsigned long flags;
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int ret = -ENXIO;
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desc = __irq_to_desc(irq);
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desc = irq_to_desc(irq);
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if (!desc) {
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printk(KERN_ERR "Trying to set irq type for IRQ%d\n", irq);
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return -ENODEV;
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@ -150,7 +151,7 @@ int set_irq_data(unsigned int irq, void *data)
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struct irq_desc *desc;
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unsigned long flags;
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desc = __irq_to_desc(irq);
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desc = irq_to_desc(irq);
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if (!desc) {
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printk(KERN_ERR
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"Trying to install controller data for IRQ%d\n", irq);
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@ -176,7 +177,7 @@ int set_irq_msi(unsigned int irq, struct msi_desc *entry)
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struct irq_desc *desc;
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unsigned long flags;
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desc = __irq_to_desc(irq);
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desc = irq_to_desc(irq);
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if (!desc) {
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printk(KERN_ERR
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"Trying to install msi data for IRQ%d\n", irq);
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@ -203,7 +204,7 @@ int set_irq_chip_data(unsigned int irq, void *data)
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struct irq_desc *desc;
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unsigned long flags;
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desc = __irq_to_desc(irq);
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desc = irq_to_desc(irq);
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if (!desc) {
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printk(KERN_ERR
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"Trying to install chip data for IRQ%d\n", irq);
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@ -554,7 +555,7 @@ __set_irq_handler(unsigned int irq, irq_flow_handler_t handle, int is_chained,
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struct irq_desc *desc;
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unsigned long flags;
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desc = __irq_to_desc(irq);
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desc = irq_to_desc(irq);
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if (!desc) {
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printk(KERN_ERR
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"Trying to install type control for IRQ%d\n", irq);
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@ -618,7 +619,7 @@ void __init set_irq_noprobe(unsigned int irq)
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struct irq_desc *desc;
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unsigned long flags;
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desc = __irq_to_desc(irq);
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desc = irq_to_desc(irq);
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if (!desc) {
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printk(KERN_ERR "Trying to mark IRQ%d non-probeable\n", irq);
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@ -635,7 +636,7 @@ void __init set_irq_probe(unsigned int irq)
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struct irq_desc *desc;
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unsigned long flags;
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desc = __irq_to_desc(irq);
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desc = irq_to_desc(irq);
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if (!desc) {
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printk(KERN_ERR "Trying to mark IRQ%d probeable\n", irq);
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@ -151,7 +151,7 @@ early_param("nr_irq_desc", parse_nr_irq_desc);
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struct irq_desc *sparse_irqs;
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DEFINE_DYN_ARRAY(sparse_irqs, sizeof(struct irq_desc), nr_irq_desc, PAGE_SIZE, init_work);
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struct irq_desc *__irq_to_desc(unsigned int irq)
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struct irq_desc *irq_to_desc(unsigned int irq)
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{
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struct irq_desc *desc;
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@ -169,7 +169,7 @@ struct irq_desc *__irq_to_desc(unsigned int irq)
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}
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return NULL;
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}
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struct irq_desc *irq_to_desc(unsigned int irq)
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struct irq_desc *irq_to_desc_alloc(unsigned int irq)
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{
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struct irq_desc *desc, *desc_pri;
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int i;
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@ -186,6 +186,7 @@ struct irq_desc *irq_to_desc(unsigned int irq)
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if (desc->irq == -1U) {
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desc->irq = irq;
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printk(KERN_DEBUG "found new irq_desc for irq %d\n", desc->irq);
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return desc;
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}
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desc_pri = desc;
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@ -236,21 +237,7 @@ struct irq_desc *irq_to_desc(unsigned int irq)
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desc->irq = irq;
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desc_pri->next = desc;
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{
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/* double check if some one mess up the list */
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struct irq_desc *desc;
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int count = 0;
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desc = &sparse_irqs[0];
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while (desc) {
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printk(KERN_DEBUG "1 found irq_desc for irq %d\n", desc->irq);
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if (desc->next)
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printk(KERN_DEBUG "1 found irq_desc for irq %d and next will be irq %d\n", desc->irq, desc->next->irq);
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desc = desc->next;
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count++;
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}
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printk(KERN_DEBUG "1 all preallocted %d\n", count);
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}
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printk(KERN_DEBUG "1 found new irq_desc for irq %d and pri will be irq %d\n", desc->irq, desc_pri->irq);
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return desc;
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}
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@ -285,7 +272,7 @@ struct irq_desc *irq_to_desc(unsigned int irq)
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return NULL;
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}
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struct irq_desc *__irq_to_desc(unsigned int irq)
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struct irq_desc *irq_to_desc_alloc(unsigned int irq)
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{
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return irq_to_desc(irq);
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}
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@ -31,7 +31,7 @@ cpumask_t irq_default_affinity = CPU_MASK_ALL;
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*/
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void synchronize_irq(unsigned int irq)
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{
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struct irq_desc *desc = __irq_to_desc(irq);
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struct irq_desc *desc = irq_to_desc(irq);
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unsigned int status;
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if (!desc)
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@ -145,7 +145,7 @@ void disable_irq_nosync(unsigned int irq)
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struct irq_desc *desc;
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unsigned long flags;
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desc = __irq_to_desc(irq);
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desc = irq_to_desc(irq);
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if (!desc)
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return;
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@ -174,7 +174,7 @@ void disable_irq(unsigned int irq)
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{
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struct irq_desc *desc;
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desc = __irq_to_desc(irq);
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desc = irq_to_desc(irq);
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if (!desc)
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return;
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@ -218,7 +218,7 @@ void enable_irq(unsigned int irq)
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struct irq_desc *desc;
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unsigned long flags;
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desc = __irq_to_desc(irq);
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desc = irq_to_desc(irq);
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if (!desc)
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return;
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@ -296,7 +296,7 @@ int can_request_irq(unsigned int irq, unsigned long irqflags)
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struct irq_desc *desc;
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struct irqaction *action;
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desc = __irq_to_desc(irq);
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desc = irq_to_desc(irq);
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if (!desc)
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return 0;
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@ -366,7 +366,7 @@ int setup_irq(unsigned int irq, struct irqaction *new)
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int shared = 0;
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int ret;
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desc = __irq_to_desc(irq);
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desc = irq_to_desc(irq);
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if (!desc)
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return -EINVAL;
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@ -527,7 +527,7 @@ void free_irq(unsigned int irq, void *dev_id)
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WARN_ON(in_interrupt());
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desc = __irq_to_desc(irq);
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desc = irq_to_desc(irq);
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if (!desc)
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return;
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@ -644,7 +644,7 @@ int request_irq(unsigned int irq, irq_handler_t handler,
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if ((irqflags & IRQF_SHARED) && !dev_id)
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return -EINVAL;
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desc = __irq_to_desc(irq);
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desc = irq_to_desc(irq);
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if (!desc)
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return -EINVAL;
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