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From: Jiang Liu <jiang.liu@linux.intel.com>
To: Thomas Gleixner <tglx@linutronix.de>,
	Richard Henderson <rth@twiddle.net>,
	Ivan Kokshaysky <ink@jurassic.park.msu.ru>,
	Matt Turner <mattst88@gmail.com>,
	Jiang Liu <jiang.liu@linux.intel.com>
Cc: Borislav Petkov <bp@alien8.de>, Tony Luck <tony.luck@intel.com>,
	linux-kernel@vger.kernel.org, linux-alpha@vger.kernel.org
Subject: [Resend Patch v4 01/16] smp, alpha: Kill SMP single function call interrupt
Date: Fri, 23 Jan 2015 13:36:40 +0800	[thread overview]
Message-ID: <1421991416-20297-2-git-send-email-jiang.liu@linux.intel.com> (raw)
In-Reply-To: <1421991416-20297-1-git-send-email-jiang.liu@linux.intel.com>

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: Richard Henderson <rth@twiddle.net>
Cc: Ivan Kokshaysky <ink@jurassic.park.msu.ru>
Cc: Matt Turner <mattst88@gmail.com>
Cc: linux-alpha@vger.kernel.org
Signed-off-by: Jiang Liu <jiang.liu@linux.intel.com>
---
 arch/alpha/kernel/smp.c |    8 +-------
 1 file changed, 1 insertion(+), 7 deletions(-)

diff --git a/arch/alpha/kernel/smp.c b/arch/alpha/kernel/smp.c
index 99ac36d5de4e..2f24447fef92 100644
--- a/arch/alpha/kernel/smp.c
+++ b/arch/alpha/kernel/smp.c
@@ -63,7 +63,6 @@ static struct {
 enum ipi_message_type {
 	IPI_RESCHEDULE,
 	IPI_CALL_FUNC,
-	IPI_CALL_FUNC_SINGLE,
 	IPI_CPU_STOP,
 };
 
@@ -506,7 +505,6 @@ setup_profiling_timer(unsigned int multiplier)
 	return -EINVAL;
 }
 
-\f
 static void
 send_ipi_message(const struct cpumask *to_whom, enum ipi_message_type operation)
 {
@@ -552,10 +550,6 @@ handle_ipi(struct pt_regs *regs)
 			generic_smp_call_function_interrupt();
 			break;
 
-		case IPI_CALL_FUNC_SINGLE:
-			generic_smp_call_function_single_interrupt();
-			break;
-
 		case IPI_CPU_STOP:
 			halt();
 
@@ -606,7 +600,7 @@ void arch_send_call_function_ipi_mask(const struct cpumask *mask)
 
 void arch_send_call_function_single_ipi(int cpu)
 {
-	send_ipi_message(cpumask_of(cpu), IPI_CALL_FUNC_SINGLE);
+	send_ipi_message(cpumask_of(cpu), IPI_CALL_FUNC);
 }
 
 static void
-- 
1.7.10.4


  reply	other threads:[~2015-01-23  5:34 UTC|newest]

Thread overview: 25+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2015-01-23  5:36 [Resend Patch v4 00/16] Kill SMP single function call interrupt Jiang Liu
2015-01-23  5:36 ` Jiang Liu [this message]
2015-01-23  5:36 ` [Resend Patch v4 02/16] smp, ARM: " Jiang Liu
2015-01-23  5:36 ` [Resend Patch v4 03/16] smp, ARM64: " Jiang Liu
2015-01-23 18:10   ` Catalin Marinas
2015-01-23  5:36 ` [Resend Patch v4 04/16] smp, IA64: " Jiang Liu
2015-01-23  5:36 ` [Resend Patch v4 05/16] smp, m32r: " Jiang Liu
2015-01-23  5:36 ` [Resend Patch v4 06/16] smp, mn10300: " Jiang Liu
2015-01-23  5:36 ` [Resend Patch v4 07/16] smp, mn10300: Enable arch_send_call_function_ipi_mask() Jiang Liu
2015-01-23  5:36 ` [Resend Patch v4 08/16] smp, sh: Kill SMP single function call interrupt Jiang Liu
2015-01-23  5:36 ` [Resend Patch v4 09/16] smp, sparc64: " Jiang Liu
2015-01-23  5:36 ` [Resend Patch v4 10/16] smp, sparc: " Jiang Liu
2015-01-23  5:36 ` [Resend Patch v4 11/16] smp, x86, xen: " Jiang Liu
2015-01-23  5:36 ` [Resend Patch v4 12/16] smp, x86: " Jiang Liu
2015-01-23  8:53   ` Peter Zijlstra
2015-01-23 11:20   ` Borislav Petkov
2015-01-23  5:36 ` [Resend Patch v4 13/16] smp, tile: " Jiang Liu
2015-01-23  5:36 ` [Resend Patch v4 14/16] smp, s390: " Jiang Liu
2015-01-23  6:54   ` Heiko Carstens
2015-01-23  9:21     ` Jiang Liu
2015-01-23  9:32       ` Heiko Carstens
2015-01-23  5:36 ` [Resend Patch v4 15/16] smp: Cleanup unsued generic_smp_call_function_single_interrupt() Jiang Liu
2015-01-23  5:36 ` [Resend Patch v4 16/16] smp, trivial: Remove unused function prototype from smp_boot.h Jiang Liu
2015-01-24 19:28 ` [Resend Patch v4 00/16] Kill SMP single function call interrupt Thomas Gleixner
2015-01-26  2:13   ` Jiang Liu

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