};
DEFINE_PER_CPU(int[IA64_NUM_VECTORS], vector_irq) = {
- [0 ... IA64_NUM_VECTORS - 1] = IA64_SPURIOUS_INT_VECTOR
+ [0 ... IA64_NUM_VECTORS - 1] = -1
};
static cpumask_t vector_table[IA64_NUM_VECTORS] = {
domain = cfg->domain;
cpus_and(mask, cfg->domain, cpu_online_map);
for_each_cpu_mask(cpu, mask)
- per_cpu(vector_irq, cpu)[vector] = IA64_SPURIOUS_INT_VECTOR;
+ per_cpu(vector_irq, cpu)[vector] = -1;
cfg->vector = IRQ_VECTOR_UNASSIGNED;
cfg->domain = CPU_MASK_NONE;
irq_status[irq] = IRQ_UNUSED;
{
unsigned long flags;
int vector, cpu;
- cpumask_t domain;
+ cpumask_t domain = CPU_MASK_NONE;
vector = -ENOSPC;
/* Clear vector_irq */
for (vector = 0; vector < IA64_NUM_VECTORS; ++vector)
- per_cpu(vector_irq, cpu)[vector] = IA64_SPURIOUS_INT_VECTOR;
+ per_cpu(vector_irq, cpu)[vector] = -1;
/* Mark the inuse vectors */
for (irq = 0; irq < NR_IRQS; ++irq) {
if (!cpu_isset(cpu, irq_cfg[irq].domain))
}
#if defined(CONFIG_SMP) && (defined(CONFIG_IA64_GENERIC) || defined(CONFIG_IA64_DIG))
+#define IA64_IRQ_MOVE_VECTOR IA64_DEF_FIRST_DEVICE_VECTOR
+
static enum vector_domain_type {
VECTOR_DOMAIN_NONE,
VECTOR_DOMAIN_PERCPU
return CPU_MASK_ALL;
}
+static int __irq_prepare_move(int irq, int cpu)
+{
+ struct irq_cfg *cfg = &irq_cfg[irq];
+ int vector;
+ cpumask_t domain;
+
+ if (cfg->move_in_progress || cfg->move_cleanup_count)
+ return -EBUSY;
+ if (cfg->vector == IRQ_VECTOR_UNASSIGNED || !cpu_online(cpu))
+ return -EINVAL;
+ if (cpu_isset(cpu, cfg->domain))
+ return 0;
+ domain = vector_allocation_domain(cpu);
+ vector = find_unassigned_vector(domain);
+ if (vector < 0)
+ return -ENOSPC;
+ cfg->move_in_progress = 1;
+ cfg->old_domain = cfg->domain;
+ cfg->vector = IRQ_VECTOR_UNASSIGNED;
+ cfg->domain = CPU_MASK_NONE;
+ BUG_ON(__bind_irq_vector(irq, vector, domain));
+ return 0;
+}
+
+int irq_prepare_move(int irq, int cpu)
+{
+ unsigned long flags;
+ int ret;
+
+ spin_lock_irqsave(&vector_lock, flags);
+ ret = __irq_prepare_move(irq, cpu);
+ spin_unlock_irqrestore(&vector_lock, flags);
+ return ret;
+}
+
+void irq_complete_move(unsigned irq)
+{
+ struct irq_cfg *cfg = &irq_cfg[irq];
+ cpumask_t cleanup_mask;
+ int i;
+
+ if (likely(!cfg->move_in_progress))
+ return;
+
+ if (unlikely(cpu_isset(smp_processor_id(), cfg->old_domain)))
+ return;
+
+ cpus_and(cleanup_mask, cfg->old_domain, cpu_online_map);
+ cfg->move_cleanup_count = cpus_weight(cleanup_mask);
+ for_each_cpu_mask(i, cleanup_mask)
+ platform_send_ipi(i, IA64_IRQ_MOVE_VECTOR, IA64_IPI_DM_INT, 0);
+ cfg->move_in_progress = 0;
+}
+
+static irqreturn_t smp_irq_move_cleanup_interrupt(int irq, void *dev_id)
+{
+ int me = smp_processor_id();
+ ia64_vector vector;
+ unsigned long flags;
+
+ for (vector = IA64_FIRST_DEVICE_VECTOR;
+ vector < IA64_LAST_DEVICE_VECTOR; vector++) {
+ int irq;
+ struct irq_desc *desc;
+ struct irq_cfg *cfg;
+ irq = __get_cpu_var(vector_irq)[vector];
+ if (irq < 0)
+ continue;
+
+ desc = irq_desc + irq;
+ cfg = irq_cfg + irq;
+ spin_lock(&desc->lock);
+ if (!cfg->move_cleanup_count)
+ goto unlock;
+
+ if (!cpu_isset(me, cfg->old_domain))
+ goto unlock;
+
+ spin_lock_irqsave(&vector_lock, flags);
+ __get_cpu_var(vector_irq)[vector] = -1;
+ cpu_clear(me, vector_table[vector]);
+ spin_unlock_irqrestore(&vector_lock, flags);
+ cfg->move_cleanup_count--;
+ unlock:
+ spin_unlock(&desc->lock);
+ }
+ return IRQ_HANDLED;
+}
+
+static struct irqaction irq_move_irqaction = {
+ .handler = smp_irq_move_cleanup_interrupt,
+ .flags = IRQF_DISABLED,
+ .name = "irq_move"
+};
+
static int __init parse_vector_domain(char *arg)
{
if (!arg)
spin_unlock_irqrestore(&vector_lock, flags);
}
-static int __reassign_irq_vector(int irq, int cpu)
-{
- struct irq_cfg *cfg = &irq_cfg[irq];
- int vector;
- cpumask_t domain;
-
- if (cfg->vector == IRQ_VECTOR_UNASSIGNED || !cpu_online(cpu))
- return -EINVAL;
- if (cpu_isset(cpu, cfg->domain))
- return 0;
- domain = vector_allocation_domain(cpu);
- vector = find_unassigned_vector(domain);
- if (vector < 0)
- return -ENOSPC;
- __clear_irq_vector(irq);
- BUG_ON(__bind_irq_vector(irq, vector, domain));
- return 0;
-}
-
-int reassign_irq_vector(int irq, int cpu)
-{
- unsigned long flags;
- int ret;
-
- spin_lock_irqsave(&vector_lock, flags);
- ret = __reassign_irq_vector(irq, cpu);
- spin_unlock_irqrestore(&vector_lock, flags);
- return ret;
-}
-
/*
* Dynamic irq allocate and deallocation for MSI
*/
{
unsigned long flags;
int irq, vector, cpu;
- cpumask_t domain;
+ cpumask_t domain = CPU_MASK_NONE;
irq = vector = -ENOSPC;
spin_lock_irqsave(&vector_lock, flags);
} else if (unlikely(IS_RESCHEDULE(vector)))
kstat_this_cpu.irqs[vector]++;
else {
+ int irq = local_vector_to_irq(vector);
+
ia64_setreg(_IA64_REG_CR_TPR, vector);
ia64_srlz_d();
- generic_handle_irq(local_vector_to_irq(vector));
+ if (unlikely(irq < 0)) {
+ printk(KERN_ERR "%s: Unexpected interrupt "
+ "vector %d on CPU %d is not mapped "
+ "to any IRQ!\n", __func__, vector,
+ smp_processor_id());
+ } else
+ generic_handle_irq(irq);
/*
* Disable interrupts and send EOI:
kstat_this_cpu.irqs[vector]++;
else {
struct pt_regs *old_regs = set_irq_regs(NULL);
+ int irq = local_vector_to_irq(vector);
ia64_setreg(_IA64_REG_CR_TPR, vector);
ia64_srlz_d();
* it will work. I hope it works!.
* Probably could shared code.
*/
- vectors_in_migration[local_vector_to_irq(vector)]=0;
- generic_handle_irq(local_vector_to_irq(vector));
+ if (unlikely(irq < 0)) {
+ printk(KERN_ERR "%s: Unexpected interrupt "
+ "vector %d on CPU %d not being mapped "
+ "to any IRQ!!\n", __func__, vector,
+ smp_processor_id());
+ } else {
+ vectors_in_migration[irq]=0;
+ generic_handle_irq(irq);
+ }
set_irq_regs(old_regs);
/*
register_percpu_irq(IA64_IPI_VECTOR, &ipi_irqaction);
register_percpu_irq(IA64_IPI_RESCHEDULE, &resched_irqaction);
register_percpu_irq(IA64_IPI_LOCAL_TLB_FLUSH, &tlb_irqaction);
+#if defined(CONFIG_IA64_GENERIC) || defined(CONFIG_IA64_DIG)
+ if (vector_domain_type != VECTOR_DOMAIN_NONE) {
+ BUG_ON(IA64_FIRST_DEVICE_VECTOR != IA64_IRQ_MOVE_VECTOR);
+ IA64_FIRST_DEVICE_VECTOR++;
+ register_percpu_irq(IA64_IRQ_MOVE_VECTOR, &irq_move_irqaction);
+ }
+#endif
#endif
#ifdef CONFIG_PERFMON
pfm_init_percpu();
unsigned long ipi_data;
unsigned long phys_cpu_id;
-#ifdef CONFIG_SMP
phys_cpu_id = cpu_physical_id(cpu);
-#else
- phys_cpu_id = (ia64_getreg(_IA64_REG_CR_LID) >> 16) & 0xffff;
-#endif
/*
* cpu number is in 8bit ID and 8bit EID
git.samba.org / sfrench / cifs-2.6.git / blobdiff