linux-kernel - [RFC PATCH v3 07/19] smp, hexagon: kill SMP single function call interrupt

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Date:	Thu,  5 Dec 2013 00:12:58 +0800
From:	Jiang Liu <liuj97@...il.com>
To:	Andrew Morton <akpm@...ux-foundation.org>,
	Shaohua Li <shli@...nel.org>,
	Richard Kuo <rkuo@...eaurora.org>,
	Thomas Gleixner <tglx@...utronix.de>,
	Paul Gortmaker <paul.gortmaker@...driver.com>,
	"Srivatsa S. Bhat" <srivatsa.bhat@...ux.vnet.ibm.com>,
	linux-hexagon@...r.kernel.org, linux-kernel@...r.kernel.org
Cc:	Jiang Liu <liuj97@...il.com>, Ingo Molnar <mingo@...e.hu>,
	Peter Zijlstra <a.p.zijlstra@...llo.nl>,
	Steven Rostedt <rostedt@...dmis.org>,
	Jiri Kosina <trivial@...nel.org>,
	Wang YanQing <udknight@...il.com>, linux-arch@...r.kernel.org
Subject: [RFC PATCH v3 07/19] smp, hexagon: 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 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 <akpm@...ux-foundation.org>
Cc: Shaohua Li <shli@...nel.org>
Cc: Peter Zijlstra <a.p.zijlstra@...llo.nl>
Cc: Ingo Molnar <mingo@...e.hu>
Cc: Steven Rostedt <rostedt@...dmis.org>
Cc: Jiri Kosina <trivial@...nel.org>
Cc: Richard Kuo <rkuo@...eaurora.org>
Cc: linux-hexagon@...r.kernel.org
Signed-off-by: Jiang Liu <liuj97@...il.com>
---
 arch/hexagon/include/asm/smp.h | 1 -
 arch/hexagon/kernel/smp.c      | 6 +-----
 2 files changed, 1 insertion(+), 6 deletions(-)

diff --git a/arch/hexagon/include/asm/smp.h b/arch/hexagon/include/asm/smp.h
index 2b9b974..ca171c1 100644
--- a/arch/hexagon/include/asm/smp.h
+++ b/arch/hexagon/include/asm/smp.h
@@ -29,7 +29,6 @@ enum ipi_message_type {
 	IPI_NOP = 0,
 	IPI_RESCHEDULE = 1,
 	IPI_CALL_FUNC,
-	IPI_CALL_FUNC_SINGLE,
 	IPI_CPU_STOP,
 	IPI_TIMER,
 };
diff --git a/arch/hexagon/kernel/smp.c b/arch/hexagon/kernel/smp.c
index 9faaa94..ff759f2 100644
--- a/arch/hexagon/kernel/smp.c
+++ b/arch/hexagon/kernel/smp.c
@@ -64,10 +64,6 @@ static inline void __handle_ipi(unsigned long *ops, struct ipi_data *ipi,
 			generic_smp_call_function_interrupt();
 			break;
 
-		case IPI_CALL_FUNC_SINGLE:
-			generic_smp_call_function_single_interrupt();
-			break;
-
 		case IPI_CPU_STOP:
 			/*
 			 * call vmstop()
@@ -248,7 +244,7 @@ void smp_send_stop(void)
 
 void arch_send_call_function_single_ipi(int cpu)
 {
-	send_ipi(cpumask_of(cpu), IPI_CALL_FUNC_SINGLE);
+	send_ipi(cpumask_of(cpu), IPI_CALL_FUNC);
 }
 
 void arch_send_call_function_ipi_mask(const struct cpumask *mask)
-- 
1.8.1.2

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