[PATCH v3 [resend] 07/18] smp, IA64: kill SMP single function call interrupt

Jiang Liu
2013-12-15T16:41:51Z

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: Andrew Morton <akpm@linux-foundation.org>
Cc: Shaohua Li <shli@kernel.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Steven Rostedt <rostedt@goodmis.org>
Cc: Jiri Kosina <trivial@kernel.org>
Cc: Tony Luck <tony.luck@intel.com>
Cc: Fenghua Yu <fenghua.yu@intel.com>
Cc: linux-ia64@vger.kernel.org
Signed-off-by: Jiang Liu <liuj97@gmail.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 9fcd4e6..0532909 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)
--
1.8.1.2