Commit 9a46ad6d6df3b54 "smp: make smp_call_function_many() use logic
similar to smp_call_function_single()" has unified the way to handle
single and multiple cross-CPU function calls. Now only one interrupt
is needed for architecture specific code to support generic SMP function
call interfaces, so kill the redundant single function call interrupt.

Cc: Tony Luck <tony.l...@intel.com>
Cc: Fenghua Yu <fenghua...@intel.com>
Cc: linux-i...@vger.kernel.org
Signed-off-by: Jiang Liu <jiang....@linux.intel.com>
---
 arch/ia64/kernel/smp.c |    8 ++------
 1 file changed, 2 insertions(+), 6 deletions(-)

diff --git a/arch/ia64/kernel/smp.c b/arch/ia64/kernel/smp.c
index 9fcd4e63048f..0532909b6e8e 100644
--- a/arch/ia64/kernel/smp.c
+++ b/arch/ia64/kernel/smp.c
@@ -62,8 +62,7 @@ static DEFINE_PER_CPU_SHARED_ALIGNED(unsigned short [NR_CPUS],
 
 #define IPI_CALL_FUNC          0
 #define IPI_CPU_STOP           1
-#define IPI_CALL_FUNC_SINGLE   2
-#define IPI_KDUMP_CPU_STOP     3
+#define IPI_KDUMP_CPU_STOP     2
 
 /* This needs to be cacheline aligned because it is written to by *other* 
CPUs.  */
 static DEFINE_PER_CPU_SHARED_ALIGNED(unsigned long, ipi_operation);
@@ -116,9 +115,6 @@ handle_IPI (int irq, void *dev_id)
                        case IPI_CALL_FUNC:
                                generic_smp_call_function_interrupt();
                                break;
-                       case IPI_CALL_FUNC_SINGLE:
-                               generic_smp_call_function_single_interrupt();
-                               break;
 #ifdef CONFIG_KEXEC
                        case IPI_KDUMP_CPU_STOP:
                                unw_init_running(kdump_cpu_freeze, NULL);
@@ -318,7 +314,7 @@ smp_flush_tlb_mm (struct mm_struct *mm)
 
 void arch_send_call_function_single_ipi(int cpu)
 {
-       send_IPI_single(cpu, IPI_CALL_FUNC_SINGLE);
+       send_IPI_single(cpu, IPI_CALL_FUNC);
 }
 
 void arch_send_call_function_ipi_mask(const struct cpumask *mask)
-- 
1.7.10.4

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