From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S933048Ab3LDQQZ (ORCPT ); Wed, 4 Dec 2013 11:16:25 -0500 Received: from mail-pd0-f172.google.com ([209.85.192.172]:44454 "EHLO mail-pd0-f172.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S932663Ab3LDQQX (ORCPT ); Wed, 4 Dec 2013 11:16:23 -0500 From: Jiang Liu To: Andrew Morton , Shaohua Li , Tony Luck , Fenghua Yu , linux-ia64@vger.kernel.org, linux-kernel@vger.kernel.org Cc: Jiang Liu , Ingo Molnar , Peter Zijlstra , Steven Rostedt , Jiri Kosina , Wang YanQing , linux-arch@vger.kernel.org Subject: [RFC PATCH v3 08/19] smp, IA64: kill SMP single function call interrupt Date: Thu, 5 Dec 2013 00:12:59 +0800 Message-Id: <1386173591-28514-9-git-send-email-liuj97@gmail.com> X-Mailer: git-send-email 1.8.1.2 In-Reply-To: <1386173591-28514-1-git-send-email-liuj97@gmail.com> References: <1386173591-28514-1-git-send-email-liuj97@gmail.com> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org 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 Cc: Shaohua Li Cc: Peter Zijlstra Cc: Ingo Molnar Cc: Steven Rostedt Cc: Jiri Kosina Cc: Tony Luck Cc: Fenghua Yu Cc: linux-ia64@vger.kernel.org Signed-off-by: Jiang Liu --- 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