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 intterupt
is needed for architecture specific code to support generic SMP function
call interfaces, so kill the redundant single function call interrupt.
Cc: Andrew Morton <a...@linux-foundation.org>
Cc: Shaohua Li <s...@kernel.org>
Cc: Peter Zijlstra <a.p.zijls...@chello.nl>
Cc: Ingo Molnar <mi...@elte.hu>
Cc: Steven Rostedt <rost...@goodmis.org>
Cc: Jiri Kosina <triv...@kernel.org>
Cc: Catalin Marinas <catalin.mari...@arm.com>
Cc: Will Deacon <will.dea...@arm.com>
Cc: Arnd Bergmann <a...@arndb.de>
Cc: linux-arm-ker...@lists.infradead.org
Cc: Russell King <li...@arm.linux.org.uk>
Cc: Will Deacon <will.dea...@arm.com>
Cc: Santosh Shilimkar <santosh.shilim...@ti.com>
Signed-off-by: Jiang Liu <liu...@gmail.com>
---
arch/arm/include/asm/hardirq.h | 2 +-
arch/arm/kernel/smp.c | 10 +---------
2 files changed, 2 insertions(+), 10 deletions(-)
diff --git a/arch/arm/include/asm/hardirq.h b/arch/arm/include/asm/hardirq.h
index fe3ea77..3d7351c 100644
--- a/arch/arm/include/asm/hardirq.h
+++ b/arch/arm/include/asm/hardirq.h
@@ -5,7 +5,7 @@
#include <linux/threads.h>
#include <asm/irq.h>
-#define NR_IPI 8
+#define NR_IPI 7
typedef struct {
unsigned int __softirq_pending;
diff --git a/arch/arm/kernel/smp.c b/arch/arm/kernel/smp.c
index dc894ab..e24a23d 100644
--- a/arch/arm/kernel/smp.c
+++ b/arch/arm/kernel/smp.c
@@ -65,7 +65,6 @@ enum ipi_msg_type {
IPI_TIMER,
IPI_RESCHEDULE,
IPI_CALL_FUNC,
- IPI_CALL_FUNC_SINGLE,
IPI_CPU_STOP,
IPI_IRQ_WORK,
IPI_COMPLETION,
@@ -448,7 +447,7 @@ void arch_send_wakeup_ipi_mask(const struct cpumask *mask)
void arch_send_call_function_single_ipi(int cpu)
{
- smp_cross_call(cpumask_of(cpu), IPI_CALL_FUNC_SINGLE);
+ smp_cross_call(cpumask_of(cpu), IPI_CALL_FUNC);
}
#ifdef CONFIG_IRQ_WORK
@@ -465,7 +464,6 @@ static const char *ipi_types[NR_IPI] = {
S(IPI_TIMER, "Timer broadcast interrupts"),
S(IPI_RESCHEDULE, "Rescheduling interrupts"),
S(IPI_CALL_FUNC, "Function call interrupts"),
- S(IPI_CALL_FUNC_SINGLE, "Single function call interrupts"),
S(IPI_CPU_STOP, "CPU stop interrupts"),
S(IPI_IRQ_WORK, "IRQ work interrupts"),
S(IPI_COMPLETION, "completion interrupts"),
@@ -579,12 +577,6 @@ void handle_IPI(int ipinr, struct pt_regs *regs)
irq_exit();
break;
- case IPI_CALL_FUNC_SINGLE:
- irq_enter();
- generic_smp_call_function_single_interrupt();
- irq_exit();
- break;
-
case IPI_CPU_STOP:
irq_enter();
ipi_cpu_stop(cpu);
--
1.8.1.2
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