linux-kernel - [Resend Patch v4 08/16] smp, sh: Kill SMP single function call interrupt

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Message-Id: <1421991416-20297-9-git-send-email-jiang.liu@linux.intel.com>
Date:	Fri, 23 Jan 2015 13:36:47 +0800
From:	Jiang Liu <jiang.liu@...ux.intel.com>
To:	Thomas Gleixner <tglx@...utronix.de>,
	Jiang Liu <jiang.liu@...ux.intel.com>
Cc:	Borislav Petkov <bp@...en8.de>, Tony Luck <tony.luck@...el.com>,
	linux-kernel@...r.kernel.org, Paul Mundt <lethal@...ux-sh.org>,
	linux-sh@...r.kernel.org
Subject: [Resend Patch v4 08/16] smp, sh: Kill SMP single function call interrupt

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: Paul Mundt <lethal@...ux-sh.org>
Signed-off-by: Jiang Liu <jiang.liu@...ux.intel.com>
---
 arch/sh/include/asm/smp.h |    1 -
 arch/sh/kernel/smp.c      |    5 +----
 2 files changed, 1 insertion(+), 5 deletions(-)

diff --git a/arch/sh/include/asm/smp.h b/arch/sh/include/asm/smp.h
index 78b0d0f4b24b..93ce87b3a18d 100644
--- a/arch/sh/include/asm/smp.h
+++ b/arch/sh/include/asm/smp.h
@@ -25,7 +25,6 @@ extern int __cpu_logical_map[NR_CPUS];
 enum {
 	SMP_MSG_FUNCTION,
 	SMP_MSG_RESCHEDULE,
-	SMP_MSG_FUNCTION_SINGLE,
 	SMP_MSG_TIMER,
 
 	SMP_MSG_NR,	/* must be last */
diff --git a/arch/sh/kernel/smp.c b/arch/sh/kernel/smp.c
index fc5acfc93c92..fc03baf8b661 100644
--- a/arch/sh/kernel/smp.c
+++ b/arch/sh/kernel/smp.c
@@ -282,7 +282,7 @@ void arch_send_call_function_ipi_mask(const struct cpumask *mask)
 
 void arch_send_call_function_single_ipi(int cpu)
 {
-	mp_ops->send_ipi(cpu, SMP_MSG_FUNCTION_SINGLE);
+	mp_ops->send_ipi(cpu, SMP_MSG_FUNCTION);
 }
 
 void smp_timer_broadcast(const struct cpumask *mask)
@@ -309,9 +309,6 @@ void smp_message_recv(unsigned int msg)
 	case SMP_MSG_RESCHEDULE:
 		scheduler_ipi();
 		break;
-	case SMP_MSG_FUNCTION_SINGLE:
-		generic_smp_call_function_single_interrupt();
-		break;
 	case SMP_MSG_TIMER:
 		ipi_timer();
 		break;
-- 
1.7.10.4

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