x86: use dyn_array in io_apic_xx.c

Signed-off-by: Yinghai Lu <yhlu.kernel@gmail.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>

diff --git a/arch/x86/kernel/io_apic_32.c b/arch/x86/kernel/io_apic_32.c
index d382990244f0fba0749fb05e3bf938bc132917bb..7f2bcc3dad8269d30e71a8f54ecdf041612edc88 100644 (file)
--- a/arch/x86/kernel/io_apic_32.c
+++ b/arch/x86/kernel/io_apic_32.c
@@ -70,7 +70,7 @@ int timer_through_8259 __initdata;
  */
 int sis_apic_bug = -1;
 
-int first_free_entry = NR_IRQS;
+int first_free_entry;
 /*
  * # of IRQ routing registers
  */
@@ -98,10 +98,7 @@ static int disable_timer_pin_1 __initdata;
  * Rough estimation of how many shared IRQs there are, can
  * be changed anytime.
  */
-#define MAX_PLUS_SHARED_IRQS NR_IRQS
-#define PIN_MAP_SIZE (MAX_PLUS_SHARED_IRQS + NR_IRQS)
-
-int pin_map_size = PIN_MAP_SIZE;
+int pin_map_size;
 
 /*
  * This is performance-critical, we want to do it O(1)
@@ -112,7 +109,9 @@ int pin_map_size = PIN_MAP_SIZE;
 
 static struct irq_pin_list {
        int apic, pin, next;
-} irq_2_pin[PIN_MAP_SIZE];
+} *irq_2_pin;
+
+DEFINE_DYN_ARRAY(irq_2_pin, sizeof(struct irq_pin_list), pin_map_size, 16, NULL);
 
 struct io_apic {
        unsigned int index;
@@ -403,9 +402,28 @@ static struct irq_cpu_info {
 
 #define CPU_TO_PACKAGEINDEX(i) (first_cpu(per_cpu(cpu_sibling_map, i)))
 
-static cpumask_t balance_irq_affinity[NR_IRQS] = {
-       [0 ... NR_IRQS-1] = CPU_MASK_ALL
-};
+static cpumask_t balance_irq_affinity_init __initdata = CPU_MASK_ALL;
+
+static cpumask_t *balance_irq_affinity;
+
+
+static void __init irq_affinity_init_work(void *data)
+{
+       struct dyn_array *da = data;
+
+       int i;
+       struct  balance_irq_affinity *affinity;
+
+       affinity = *da->name;
+
+       for (i = 0; i < *da->nr; i++)
+               memcpy(&affinity[i], &balance_irq_affinity_init,
+                        sizeof(struct balance_irq_affinity));
+
+}
+
+DEFINE_DYN_ARRAY(balance_irq_affinity, sizeof(struct balance_irq_affinity), nr_irqs, PAGE_SIZE, irq_affinity_init_work);
+
 
 void set_balance_irq_affinity(unsigned int irq, cpumask_t mask)
 {
@@ -1170,14 +1188,28 @@ static inline int IO_APIC_irq_trigger(int irq)
 }
 
 /* irq_vectors is indexed by the sum of all RTEs in all I/O APICs. */
-static u8 irq_vector[NR_IRQ_VECTORS] __read_mostly = { FIRST_DEVICE_VECTOR , 0 };
+static u8 irq_vector_init_first __initdata = FIRST_DEVICE_VECTOR;
+static u8 *irq_vector;
+
+static void __init irq_vector_init_work(void *data)
+{
+       struct dyn_array *da = data;
+
+       u8 *irq_vec;
+
+       irq_vec = *da->name;
+
+       irq_vec[0] = irq_vector_init_first;
+}
+
+DEFINE_DYN_ARRAY(irq_vector, sizeof(u8), nr_irqs, PAGE_SIZE, irq_vector_init_work);
 
 static int __assign_irq_vector(int irq)
 {
        static int current_vector = FIRST_DEVICE_VECTOR, current_offset;
        int vector, offset;
 
-       BUG_ON((unsigned)irq >= NR_IRQ_VECTORS);
+       BUG_ON((unsigned)irq >= nr_irqs);
 
        if (irq_vector[irq] > 0)
                return irq_vector[irq];

diff --git a/arch/x86/kernel/io_apic_64.c b/arch/x86/kernel/io_apic_64.c
index 448384c7c1e862ecaca703f281fe160a352f080e..93a3ffabfe6a1927438459252121a061d2e2e261 100644 (file)
--- a/arch/x86/kernel/io_apic_64.c
+++ b/arch/x86/kernel/io_apic_64.c
@@ -66,7 +66,7 @@ struct irq_cfg {
 };
 
 /* irq_cfg is indexed by the sum of all RTEs in all I/O APICs. */
-static struct irq_cfg irq_cfg[NR_IRQS] __read_mostly = {
+static struct irq_cfg irq_cfg_legacy[] __initdata = {
        [0]  = { .domain = CPU_MASK_ALL, .vector = IRQ0_VECTOR,  },
        [1]  = { .domain = CPU_MASK_ALL, .vector = IRQ1_VECTOR,  },
        [2]  = { .domain = CPU_MASK_ALL, .vector = IRQ2_VECTOR,  },
@@ -85,6 +85,17 @@ static struct irq_cfg irq_cfg[NR_IRQS] __read_mostly = {
        [15] = { .domain = CPU_MASK_ALL, .vector = IRQ15_VECTOR, },
 };
 
+static struct irq_cfg *irq_cfg;
+
+static void __init init_work(void *data)
+{
+       struct dyn_array *da = data;
+
+       memcpy(*da->name, irq_cfg_legacy, sizeof(irq_cfg_legacy));
+}
+
+DEFINE_DYN_ARRAY(irq_cfg, sizeof(struct irq_cfg), nr_irqs, PAGE_SIZE, init_work);
+
 static int assign_irq_vector(int irq, cpumask_t mask);
 
 int first_system_vector = 0xfe;
@@ -129,10 +140,9 @@ DECLARE_BITMAP(mp_bus_not_pci, MAX_MP_BUSSES);
  * Rough estimation of how many shared IRQs there are, can
  * be changed anytime.
  */
-#define MAX_PLUS_SHARED_IRQS NR_IRQS
-#define PIN_MAP_SIZE (MAX_PLUS_SHARED_IRQS + NR_IRQS)
 
-int pin_map_size = PIN_MAP_SIZE;
+int pin_map_size;
+
 /*
  * This is performance-critical, we want to do it O(1)
  *
@@ -141,8 +151,12 @@ int pin_map_size = PIN_MAP_SIZE;
  */
 
 static struct irq_pin_list {
-       short apic, pin, next;
-} irq_2_pin[PIN_MAP_SIZE];
+       short apic, pin;
+       int next;
+} *irq_2_pin;
+
+DEFINE_DYN_ARRAY(irq_2_pin, sizeof(struct irq_pin_list), pin_map_size, sizeof(struct irq_pin_list), NULL);
+
 
 struct io_apic {
        unsigned int index;
@@ -359,7 +373,7 @@ static void set_ioapic_affinity_irq(unsigned int irq, cpumask_t mask)
  * shared ISA-space IRQs, so we have to support them. We are super
  * fast in the common case, and fast for shared ISA-space IRQs.
  */
-int first_free_entry = NR_IRQS;
+int first_free_entry;
 static void add_pin_to_irq(unsigned int irq, int apic, int pin)
 {
        struct irq_pin_list *entry = irq_2_pin + irq;

diff --git a/arch/x86/kernel/setup.c b/arch/x86/kernel/setup.c
index 2255782e8d4b94664ff8c3c053af26aa114d0e6c..558ec26b08e25bdcb3ce22a3e98dda3262dbde20 100644 (file)
--- a/arch/x86/kernel/setup.c
+++ b/arch/x86/kernel/setup.c
@@ -1067,9 +1067,15 @@ void __init setup_arch(char **cmdline_p)
 #endif
 
        prefill_possible_map();
+
 #ifdef CONFIG_X86_64
+       /* need to wait for nr_cpu_ids settle down */
+       if (nr_irqs == NR_IRQS)
+               nr_irqs = 32 * nr_cpu_ids + 224;
        init_cpu_to_node();
 #endif
+       pin_map_size = nr_irqs * 2;
+       first_free_entry = nr_irqs;
 
        init_apic_mappings();
        ioapic_init_mappings();