x86, smp: refactor ->smp_callin_clear_local_apic() methods

Only NUMAQ does something substantial here, because it initializes
via NMIs (not via INIT as standard SMP startup) - so it needs to
reset the APIC.

 - 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>

4 files changed, 2 insertions, 13 deletions

diff --git a/arch/x86/include/asm/es7000/wakecpu.h b/arch/x86/include/asm/es7000/wakecpu.h
index 5c4d05f46d2d..e8e03962633b 100644
--- a/arch/x86/include/asm/es7000/wakecpu.h
+++ b/arch/x86/include/asm/es7000/wakecpu.h
@@ -13,11 +13,6 @@ static inline void es7000_wait_for_init_deassert(atomic_t *deassert)
         return;
 }
 
-/* Nothing to do for most platforms, since cleared by the INIT cycle */
-static inline void smp_callin_clear_local_apic(void)
-{
-}
-
 static inline void store_NMI_vector(unsigned short *high, unsigned short *low)
 {
 }
diff --git a/arch/x86/include/asm/mach-default/mach_wakecpu.h b/arch/x86/include/asm/mach-default/mach_wakecpu.h
index 1d34c69a758b..d059807cd7e8 100644
--- a/arch/x86/include/asm/mach-default/mach_wakecpu.h
+++ b/arch/x86/include/asm/mach-default/mach_wakecpu.h
@@ -8,11 +8,6 @@ static inline void default_wait_for_init_deassert(atomic_t *deassert)
         return;
 }
 
-/* Nothing to do for most platforms, since cleared by the INIT cycle */
-static inline void smp_callin_clear_local_apic(void)
-{
-}
-
 static inline void store_NMI_vector(unsigned short *high, unsigned short *low)
 {
 }
diff --git a/arch/x86/include/asm/mach-generic/mach_wakecpu.h b/arch/x86/include/asm/mach-generic/mach_wakecpu.h
index 58e54122f730..30515a154d8e 100644
--- a/arch/x86/include/asm/mach-generic/mach_wakecpu.h
+++ b/arch/x86/include/asm/mach-generic/mach_wakecpu.h
@@ -1,7 +1,6 @@
 #ifndef _ASM_X86_MACH_GENERIC_MACH_WAKECPU_H
 #define _ASM_X86_MACH_GENERIC_MACH_WAKECPU_H
 
-#define smp_callin_clear_local_apic (apic->smp_callin_clear_local_apic)
 #define store_NMI_vector (apic->store_NMI_vector)
 #define restore_NMI_vector (apic->restore_NMI_vector)
 #define inquire_remote_apic (apic->inquire_remote_apic)
diff --git a/arch/x86/include/asm/numaq/wakecpu.h b/arch/x86/include/asm/numaq/wakecpu.h
index 884b95cf5846..61d0a7d96136 100644
--- a/arch/x86/include/asm/numaq/wakecpu.h
+++ b/arch/x86/include/asm/numaq/wakecpu.h
@@ -8,9 +8,9 @@
 
 /*
  * Because we use NMIs rather than the INIT-STARTUP sequence to
- * bootstrap the CPUs, the APIC may be in a weird state. Kick it.
+ * bootstrap the CPUs, the APIC may be in a weird state. Kick it:
  */
-static inline void smp_callin_clear_local_apic(void)
+static inline void numaq_smp_callin_clear_local_apic(void)
 {
         clear_local_APIC();
 }