x86, smp: refactor ->inquire_remote_apic() methods

Nothing exciting - a few subarches dont want APIC remote reads to
be performed - the others are content with the default method.

 - extend the generic code to handle NULL methods

 - clear out dummy methods and replace them with NULL

 - clean up: remove wrapper macros, etc.
Signed-off-by: Ingo Molnar <mingo@elte.hu>

arch/x86/include/asm/es7000/wakecpu.h

@@ -13,12 +13,4 @@ static inline void es7000_wait_for_init_deassert(atomic_t *deassert)
 	return;
 }
 
-extern void __inquire_remote_apic(int apicid);
-
-static inline void inquire_remote_apic(int apicid)
-{
-	if (apic_verbosity >= APIC_DEBUG)
-		__inquire_remote_apic(apicid);
-}
-
 #endif /* __ASM_MACH_WAKECPU_H */

arch/x86/include/asm/mach-default/mach_wakecpu.h

@@ -16,7 +16,7 @@ static inline void __inquire_remote_apic(int apicid)
 }
 #endif /* CONFIG_SMP */
 
-static inline void inquire_remote_apic(int apicid)
+static inline void default_inquire_remote_apic(int apicid)
 {
 	if (apic_verbosity >= APIC_DEBUG)
 		__inquire_remote_apic(apicid);

arch/x86/include/asm/mach-generic/mach_wakecpu.h

 #ifndef _ASM_X86_MACH_GENERIC_MACH_WAKECPU_H
 #define _ASM_X86_MACH_GENERIC_MACH_WAKECPU_H
 
-#define inquire_remote_apic (apic->inquire_remote_apic)
-
 #endif /* _ASM_X86_MACH_GENERIC_MACH_APIC_H */

arch/x86/include/asm/numaq/wakecpu.h

@@ -25,8 +25,4 @@ numaq_store_NMI_vector(unsigned short *high, unsigned short *low)
 	  *((volatile unsigned short *)phys_to_virt(NUMAQ_TRAMPOLINE_PHYS_LOW));
 }
 
-static inline void inquire_remote_apic(int apicid)
-{
-}
-
 #endif /* __ASM_NUMAQ_WAKECPU_H */

arch/x86/kernel/smpboot.c

@@ -876,8 +876,8 @@ do_rest:
 			else
 				/* trampoline code not run */
 				printk(KERN_ERR "Not responding.\n");
-			if (get_uv_system_type() != UV_NON_UNIQUE_APIC)
-				inquire_remote_apic(apicid);
+			if (apic->inquire_remote_apic)
+				apic->inquire_remote_apic(apicid);
 		}
 	}
 

arch/x86/mach-generic/bigsmp.c

@@ -111,5 +111,5 @@ struct genapic apic_bigsmp = {
 
 	.smp_callin_clear_local_apic	= NULL,
 	.store_NMI_vector		= NULL,
-	.inquire_remote_apic		= inquire_remote_apic,
+	.inquire_remote_apic		= default_inquire_remote_apic,
 };

arch/x86/mach-generic/default.c

@@ -92,5 +92,5 @@ struct genapic apic_default = {
 
 	.smp_callin_clear_local_apic	= NULL,
 	.store_NMI_vector		= NULL,
-	.inquire_remote_apic		= inquire_remote_apic,
+	.inquire_remote_apic		= default_inquire_remote_apic,
 };

arch/x86/mach-generic/es7000.c

@@ -148,5 +148,5 @@ struct genapic apic_es7000 = {
 	/* Nothing to do for most platforms, since cleared by the INIT cycle: */
 	.smp_callin_clear_local_apic	= NULL,
 	.store_NMI_vector		= NULL,
-	.inquire_remote_apic		= inquire_remote_apic,
+	.inquire_remote_apic		= default_inquire_remote_apic,
 };

arch/x86/mach-generic/numaq.c

@@ -112,5 +112,5 @@ struct genapic apic_numaq = {
 
 	.smp_callin_clear_local_apic	= numaq_smp_callin_clear_local_apic,
 	.store_NMI_vector		= numaq_store_NMI_vector,
-	.inquire_remote_apic		= inquire_remote_apic,
+	.inquire_remote_apic		= NULL,
 };

arch/x86/mach-generic/summit.c

@@ -91,5 +91,5 @@ struct genapic apic_summit = {
 
 	.smp_callin_clear_local_apic	= NULL,
 	.store_NMI_vector		= NULL,
-	.inquire_remote_apic		= inquire_remote_apic,
+	.inquire_remote_apic		= default_inquire_remote_apic,
 };