x86, apic: streamline the ->multi_timer_check() quirk

only NUMAQ uses this quirk: to prevent the timer IRQ from being added
on secondary nodes.

All other genapic templates can have a NULL ->multi_timer_check()
callback.

Also, extend the generic code to treat a NULL pointer accordingly.

Signed-off-by: Ingo Molnar <mingo@elte.hu>
diff --git a/arch/x86/mach-generic/bigsmp.c b/arch/x86/mach-generic/bigsmp.c
index ad3837a..d074956 100644
--- a/arch/x86/mach-generic/bigsmp.c
+++ b/arch/x86/mach-generic/bigsmp.c
@@ -79,7 +79,7 @@
 
 	.ioapic_phys_id_map		= bigsmp_ioapic_phys_id_map,
 	.setup_apic_routing		= bigsmp_setup_apic_routing,
-	.multi_timer_check		= multi_timer_check,
+	.multi_timer_check		= NULL,
 	.apicid_to_node			= apicid_to_node,
 	.cpu_to_logical_apicid		= cpu_to_logical_apicid,
 	.cpu_present_to_apicid		= cpu_present_to_apicid,
diff --git a/arch/x86/mach-generic/default.c b/arch/x86/mach-generic/default.c
index 67f287f..6a21aa7 100644
--- a/arch/x86/mach-generic/default.c
+++ b/arch/x86/mach-generic/default.c
@@ -60,7 +60,7 @@
 
 	.ioapic_phys_id_map		= default_ioapic_phys_id_map,
 	.setup_apic_routing		= default_setup_apic_routing,
-	.multi_timer_check		= multi_timer_check,
+	.multi_timer_check		= NULL,
 	.apicid_to_node			= apicid_to_node,
 	.cpu_to_logical_apicid		= cpu_to_logical_apicid,
 	.cpu_present_to_apicid		= cpu_present_to_apicid,
diff --git a/arch/x86/mach-generic/es7000.c b/arch/x86/mach-generic/es7000.c
index f611729..0be59a5 100644
--- a/arch/x86/mach-generic/es7000.c
+++ b/arch/x86/mach-generic/es7000.c
@@ -121,7 +121,7 @@
 
 	.ioapic_phys_id_map		= es7000_ioapic_phys_id_map,
 	.setup_apic_routing		= es7000_setup_apic_routing,
-	.multi_timer_check		= multi_timer_check,
+	.multi_timer_check		= NULL,
 	.apicid_to_node			= apicid_to_node,
 	.cpu_to_logical_apicid		= cpu_to_logical_apicid,
 	.cpu_present_to_apicid		= cpu_present_to_apicid,
diff --git a/arch/x86/mach-generic/numaq.c b/arch/x86/mach-generic/numaq.c
index 8c137f4..da4ed65 100644
--- a/arch/x86/mach-generic/numaq.c
+++ b/arch/x86/mach-generic/numaq.c
@@ -66,7 +66,7 @@
 
 	.ioapic_phys_id_map		= numaq_ioapic_phys_id_map,
 	.setup_apic_routing		= numaq_setup_apic_routing,
-	.multi_timer_check		= multi_timer_check,
+	.multi_timer_check		= numaq_multi_timer_check,
 	.apicid_to_node			= apicid_to_node,
 	.cpu_to_logical_apicid		= cpu_to_logical_apicid,
 	.cpu_present_to_apicid		= cpu_present_to_apicid,
diff --git a/arch/x86/mach-generic/summit.c b/arch/x86/mach-generic/summit.c
index 0698566..b618a18 100644
--- a/arch/x86/mach-generic/summit.c
+++ b/arch/x86/mach-generic/summit.c
@@ -59,7 +59,7 @@
 
 	.ioapic_phys_id_map		= summit_ioapic_phys_id_map,
 	.setup_apic_routing		= summit_setup_apic_routing,
-	.multi_timer_check		= multi_timer_check,
+	.multi_timer_check		= NULL,
 	.apicid_to_node			= apicid_to_node,
 	.cpu_to_logical_apicid		= cpu_to_logical_apicid,
 	.cpu_present_to_apicid		= cpu_present_to_apicid,