x86, apic: clean up arch/x86/kernel/bigsmp_32.c

Impact: cleanup

- remove unnecessary indirections that were artifacts of the subarch code
- clean up include file section
- clean up various small details
Signed-off-by: Ingo Molnar <mingo@elte.hu>

arch/x86/kernel/bigsmp_32.c

 /*
- * APIC driver for "bigsmp" XAPIC machines with more than 8 virtual CPUs.
+ * APIC driver for "bigsmp" xAPIC machines with more than 8 virtual CPUs.
+ *
  * Drives the local APIC in "clustered mode".
  */
 #include <linux/threads.h>
 #include <linux/cpumask.h>
-#include <asm/mpspec.h>
-#include <asm/apic.h>
-#include <asm/fixmap.h>
-#include <asm/apicdef.h>
-#include <asm/ipi.h>
 #include <linux/kernel.h>
 #include <linux/init.h>
 #include <linux/dmi.h>
 #include <linux/smp.h>
 
+#include <asm/apicdef.h>
+#include <asm/fixmap.h>
+#include <asm/mpspec.h>
+#include <asm/apic.h>
+#include <asm/ipi.h>
 
 static inline unsigned bigsmp_get_apic_id(unsigned long x)
 {
 	return (x >> 24) & 0xFF;
 }
 
-#define xapic_phys_to_log_apicid(cpu) (per_cpu(x86_bios_cpu_apicid, cpu))
-
 static inline int bigsmp_apic_id_registered(void)
 {
 	return 1;
@@ -36,8 +35,6 @@ static inline const cpumask_t *bigsmp_target_cpus(void)
 #endif
 }
 
-#define APIC_DFR_VALUE		(APIC_DFR_FLAT)
-
 static inline unsigned long
 bigsmp_check_apicid_used(physid_mask_t bitmap, int apicid)
 {
@@ -52,9 +49,11 @@ static inline unsigned long bigsmp_check_apicid_present(int bit)
 static inline unsigned long calculate_ldr(int cpu)
 {
 	unsigned long val, id;
+
 	val = apic_read(APIC_LDR) & ~APIC_LDR_MASK;
-	id = xapic_phys_to_log_apicid(cpu);
+	id = per_cpu(x86_bios_cpu_apicid, cpu);
 	val |= SET_APIC_LOGICAL_ID(id);
+
 	return val;
 }
 
@@ -70,15 +69,16 @@ static inline void bigsmp_init_apic_ldr(void)
 	unsigned long val;
 	int cpu = smp_processor_id();
 
-	apic_write(APIC_DFR, APIC_DFR_VALUE);
+	apic_write(APIC_DFR, APIC_DFR_FLAT);
 	val = calculate_ldr(cpu);
 	apic_write(APIC_LDR, val);
 }
 
 static inline void bigsmp_setup_apic_routing(void)
 {
-	printk("Enabling APIC mode:  %s.  Using %d I/O APICs\n",
-		"Physflat", nr_ioapics);
+	printk(KERN_INFO
+		"Enabling APIC mode:  Physflat.  Using %d I/O APICs\n",
+		nr_ioapics);
 }
 
 static inline int bigsmp_apicid_to_node(int logical_apicid)
@@ -100,6 +100,7 @@ static inline physid_mask_t bigsmp_apicid_to_cpu_present(int phys_apicid)
 }
 
 extern u8 cpu_2_logical_apicid[];
+
 /* Mapping from cpu number to logical apicid */
 static inline int bigsmp_cpu_to_logical_apicid(int cpu)
 {
@@ -175,21 +176,24 @@ static int hp_ht_bigsmp(const struct dmi_system_id *d)
 {
 	printk(KERN_NOTICE "%s detected: force use of apic=bigsmp\n", d->ident);
 	dmi_bigsmp = 1;
+
 	return 0;
 }
 
 
 static const struct dmi_system_id bigsmp_dmi_table[] = {
 	{ hp_ht_bigsmp, "HP ProLiant DL760 G2",
-	{ DMI_MATCH(DMI_BIOS_VENDOR, "HP"),
-	DMI_MATCH(DMI_BIOS_VERSION, "P44-"),}
+		{	DMI_MATCH(DMI_BIOS_VENDOR, "HP"),
+			DMI_MATCH(DMI_BIOS_VERSION, "P44-"),
+		}
 	},
 
 	{ hp_ht_bigsmp, "HP ProLiant DL740",
-	{ DMI_MATCH(DMI_BIOS_VENDOR, "HP"),
-	DMI_MATCH(DMI_BIOS_VERSION, "P47-"),}
+		{	DMI_MATCH(DMI_BIOS_VENDOR, "HP"),
+			DMI_MATCH(DMI_BIOS_VERSION, "P47-"),
+		}
 	},
-	 { }
+	{ } /* NULL entry stops DMI scanning */
 };
 
 static void bigsmp_vector_allocation_domain(int cpu, cpumask_t *retmask)
@@ -204,6 +208,7 @@ static int probe_bigsmp(void)
 		dmi_bigsmp = 1;
 	else
 		dmi_check_system(bigsmp_dmi_table);
+
 	return dmi_bigsmp;
 }