x86, apic: refactor ->cpu_mask_to_apicid*()

- spread out the namespace on a per driver basis

 - clean up the functions

 - get rid of macros

Signed-off-by: Ingo Molnar <mingo@elte.hu>

5 files changed, 41 insertions, 28 deletions

diff --git a/arch/x86/kernel/genapic_flat_64.c b/arch/x86/kernel/genapic_flat_64.c
index 78baa55cd0e9..b941b112cafb 100644
--- a/arch/x86/kernel/genapic_flat_64.c
+++ b/arch/x86/kernel/genapic_flat_64.c
@@ -309,11 +309,13 @@ physflat_cpu_mask_to_apicid_and(const struct cpumask *cpumask,
          * We're using fixed IRQ delivery, can only return one phys APIC ID.
          * May as well be the first.
          */
-        for_each_cpu_and(cpu, cpumask, andmask)
+        for_each_cpu_and(cpu, cpumask, andmask) {
                 if (cpumask_test_cpu(cpu, cpu_online_mask))
                         break;
+        }
         if (cpu < nr_cpu_ids)
                 return per_cpu(x86_cpu_to_apicid, cpu);
+
         return BAD_APICID;
 }
 
diff --git a/arch/x86/kernel/genx2apic_cluster.c b/arch/x86/kernel/genx2apic_cluster.c
index c7557e051848..62f9fccf01dd 100644
--- a/arch/x86/kernel/genx2apic_cluster.c
+++ b/arch/x86/kernel/genx2apic_cluster.c
@@ -111,21 +111,21 @@ static int x2apic_apic_id_registered(void)
 
 static unsigned int x2apic_cpu_mask_to_apicid(const struct cpumask *cpumask)
 {
-        int cpu;
-
         /*
          * We're using fixed IRQ delivery, can only return one logical APIC ID.
          * May as well be the first.
          */
-        cpu = cpumask_first(cpumask);
+        int cpu = cpumask_first(cpumask);
+
         if ((unsigned)cpu < nr_cpu_ids)
                 return per_cpu(x86_cpu_to_logical_apicid, cpu);
         else
                 return BAD_APICID;
 }
 
-static unsigned int x2apic_cpu_mask_to_apicid_and(const struct cpumask *cpumask,
-                                                  const struct cpumask *andmask)
+static unsigned int
+x2apic_cpu_mask_to_apicid_and(const struct cpumask *cpumask,
+                              const struct cpumask *andmask)
 {
         int cpu;
 
@@ -133,11 +133,14 @@ static unsigned int x2apic_cpu_mask_to_apicid_and(const struct cpumask *cpumask,
          * We're using fixed IRQ delivery, can only return one logical APIC ID.
          * May as well be the first.
          */
-        for_each_cpu_and(cpu, cpumask, andmask)
+        for_each_cpu_and(cpu, cpumask, andmask) {
                 if (cpumask_test_cpu(cpu, cpu_online_mask))
                         break;
+        }
+
         if (cpu < nr_cpu_ids)
                 return per_cpu(x86_cpu_to_logical_apicid, cpu);
+
         return BAD_APICID;
 }
 
diff --git a/arch/x86/kernel/genx2apic_phys.c b/arch/x86/kernel/genx2apic_phys.c
index 80cba49cfd89..3da1675b2604 100644
--- a/arch/x86/kernel/genx2apic_phys.c
+++ b/arch/x86/kernel/genx2apic_phys.c
@@ -110,21 +110,21 @@ static int x2apic_apic_id_registered(void)
 
 static unsigned int x2apic_cpu_mask_to_apicid(const struct cpumask *cpumask)
 {
-        int cpu;
-
         /*
          * We're using fixed IRQ delivery, can only return one phys APIC ID.
          * May as well be the first.
          */
-        cpu = cpumask_first(cpumask);
+        int cpu = cpumask_first(cpumask);
+
         if ((unsigned)cpu < nr_cpu_ids)
                 return per_cpu(x86_cpu_to_apicid, cpu);
         else
                 return BAD_APICID;
 }
 
-static unsigned int x2apic_cpu_mask_to_apicid_and(const struct cpumask *cpumask,
-                                                  const struct cpumask *andmask)
+static unsigned int
+x2apic_cpu_mask_to_apicid_and(const struct cpumask *cpumask,
+                              const struct cpumask *andmask)
 {
         int cpu;
 
@@ -132,11 +132,14 @@ static unsigned int x2apic_cpu_mask_to_apicid_and(const struct cpumask *cpumask,
          * We're using fixed IRQ delivery, can only return one phys APIC ID.
          * May as well be the first.
          */
-        for_each_cpu_and(cpu, cpumask, andmask)
+        for_each_cpu_and(cpu, cpumask, andmask) {
                 if (cpumask_test_cpu(cpu, cpu_online_mask))
                         break;
+        }
+
         if (cpu < nr_cpu_ids)
                 return per_cpu(x86_cpu_to_apicid, cpu);
+
         return BAD_APICID;
 }
 
diff --git a/arch/x86/kernel/genx2apic_uv_x.c b/arch/x86/kernel/genx2apic_uv_x.c
index 50310b96adc3..f957878c21e9 100644
--- a/arch/x86/kernel/genx2apic_uv_x.c
+++ b/arch/x86/kernel/genx2apic_uv_x.c
@@ -171,21 +171,21 @@ static void uv_init_apic_ldr(void)
 
 static unsigned int uv_cpu_mask_to_apicid(const struct cpumask *cpumask)
 {
-        int cpu;
-
         /*
          * We're using fixed IRQ delivery, can only return one phys APIC ID.
          * May as well be the first.
          */
-        cpu = cpumask_first(cpumask);
+        int cpu = cpumask_first(cpumask);
+
         if ((unsigned)cpu < nr_cpu_ids)
                 return per_cpu(x86_cpu_to_apicid, cpu);
         else
                 return BAD_APICID;
 }
 
-static unsigned int uv_cpu_mask_to_apicid_and(const struct cpumask *cpumask,
-                                              const struct cpumask *andmask)
+static unsigned int
+uv_cpu_mask_to_apicid_and(const struct cpumask *cpumask,
+                          const struct cpumask *andmask)
 {
         int cpu;
 
@@ -193,11 +193,13 @@ static unsigned int uv_cpu_mask_to_apicid_and(const struct cpumask *cpumask,
          * We're using fixed IRQ delivery, can only return one phys APIC ID.
          * May as well be the first.
          */
-        for_each_cpu_and(cpu, cpumask, andmask)
+        for_each_cpu_and(cpu, cpumask, andmask) {
                 if (cpumask_test_cpu(cpu, cpu_online_mask))
                         break;
+        }
         if (cpu < nr_cpu_ids)
                 return per_cpu(x86_cpu_to_apicid, cpu);
+
         return BAD_APICID;
 }
 
diff --git a/arch/x86/kernel/io_apic.c b/arch/x86/kernel/io_apic.c
index 3d85d3d810b2..01a2505d7275 100644
--- a/arch/x86/kernel/io_apic.c
+++ b/arch/x86/kernel/io_apic.c
@@ -563,8 +563,9 @@ static int
 assign_irq_vector(int irq, struct irq_cfg *cfg, const struct cpumask *mask);
 
 /*
- * Either sets desc->affinity to a valid value, and returns cpu_mask_to_apicid
- * of that, or returns BAD_APICID and leaves desc->affinity untouched.
+ * Either sets desc->affinity to a valid value, and returns
+ * ->cpu_mask_to_apicid of that, or returns BAD_APICID and
+ * leaves desc->affinity untouched.
  */
 static unsigned int
 set_desc_affinity(struct irq_desc *desc, const struct cpumask *mask)
@@ -582,7 +583,8 @@ set_desc_affinity(struct irq_desc *desc, const struct cpumask *mask)
 
         cpumask_and(desc->affinity, cfg->domain, mask);
         set_extra_move_desc(desc, mask);
-        return cpu_mask_to_apicid_and(desc->affinity, cpu_online_mask);
+
+        return apic->cpu_mask_to_apicid_and(desc->affinity, cpu_online_mask);
 }
 
 static void
@@ -1562,7 +1564,7 @@ static void setup_IO_APIC_irq(int apic_id, int pin, unsigned int irq, struct irq
         if (assign_irq_vector(irq, cfg, apic->target_cpus()))
                 return;
 
-        dest = cpu_mask_to_apicid_and(cfg->domain, apic->target_cpus());
+        dest = apic->cpu_mask_to_apicid_and(cfg->domain, apic->target_cpus());
 
         apic_printk(APIC_VERBOSE,KERN_DEBUG
                     "IOAPIC[%d]: Set routing entry (%d-%d -> 0x%x -> "
@@ -1666,7 +1668,7 @@ static void __init setup_timer_IRQ0_pin(unsigned int apic_id, unsigned int pin,
          */
         entry.dest_mode = apic->irq_dest_mode;
         entry.mask = 1;                                 /* mask IRQ now */
-        entry.dest = cpu_mask_to_apicid(apic->target_cpus());
+        entry.dest = apic->cpu_mask_to_apicid(apic->target_cpus());
         entry.delivery_mode = apic->irq_delivery_mode;
         entry.polarity = 0;
         entry.trigger = 0;
@@ -2367,7 +2369,7 @@ migrate_ioapic_irq_desc(struct irq_desc *desc, const struct cpumask *mask)
 
         set_extra_move_desc(desc, mask);
 
-        dest = cpu_mask_to_apicid_and(cfg->domain, mask);
+        dest = apic->cpu_mask_to_apicid_and(cfg->domain, mask);
 
         modify_ioapic_rte = desc->status & IRQ_LEVEL;
         if (modify_ioapic_rte) {
@@ -3270,7 +3272,7 @@ static int msi_compose_msg(struct pci_dev *pdev, unsigned int irq, struct msi_ms
         if (err)
                 return err;
 
-        dest = cpu_mask_to_apicid_and(cfg->domain, apic->target_cpus());
+        dest = apic->cpu_mask_to_apicid_and(cfg->domain, apic->target_cpus());
 
 #ifdef CONFIG_INTR_REMAP
         if (irq_remapped(irq)) {
@@ -3708,7 +3710,8 @@ int arch_setup_ht_irq(unsigned int irq, struct pci_dev *dev)
                 struct ht_irq_msg msg;
                 unsigned dest;
 
-                dest = cpu_mask_to_apicid_and(cfg->domain, apic->target_cpus());
+                dest = apic->cpu_mask_to_apicid_and(cfg->domain,
+                                                    apic->target_cpus());
 
                 msg.address_hi = HT_IRQ_HIGH_DEST_ID(dest);
 
@@ -3773,7 +3776,7 @@ int arch_enable_uv_irq(char *irq_name, unsigned int irq, int cpu, int mmr_blade,
         entry->polarity = 0;
         entry->trigger = 0;
         entry->mask = 0;
-        entry->dest = cpu_mask_to_apicid(eligible_cpu);
+        entry->dest = apic->cpu_mask_to_apicid(eligible_cpu);
 
         mmr_pnode = uv_blade_to_pnode(mmr_blade);
         uv_write_global_mmr64(mmr_pnode, mmr_offset, mmr_value);