Impact: make nr_irqs depend more on cards used in a system
depend on nr_irq_gsi more, and have a ratio for MSI.
v2: make nr_irqs less than NR_VECTORS * nr_cpu_ids
aka if only one cpu, we only can support nr_irqs = NR_VECTORS
Signed-off-by: Yinghai Lu <yinghai@kernel.org>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
sub_handle = 0;
list_for_each_entry(msidesc, &dev->msi_list, list) {
irq = create_irq_nr(irq_want);
sub_handle = 0;
list_for_each_entry(msidesc, &dev->msi_list, list) {
irq = create_irq_nr(irq_want);
#ifdef CONFIG_INTR_REMAP
if (!intr_remapping_enabled)
goto no_ir;
#ifdef CONFIG_INTR_REMAP
if (!intr_remapping_enabled)
goto no_ir;
- nr = ((8 * nr_cpu_ids) > (32 * nr_ioapics) ?
- (NR_VECTORS + (8 * nr_cpu_ids)) :
- (NR_VECTORS + (32 * nr_ioapics)));
+ if (nr_irqs > (NR_VECTORS * nr_cpu_ids))
+ nr_irqs = NR_VECTORS * nr_cpu_ids;
- if (nr < nr_irqs && nr > nr_irqs_gsi)
+ nr = nr_irqs_gsi + 8 * nr_cpu_ids;
+#if defined(CONFIG_PCI_MSI) || defined(CONFIG_HT_IRQ)
+ /*
+ * for MSI and HT dyn irq
+ */
+ nr += nr_irqs_gsi * 16;
+#endif
+ if (nr < nr_irqs)