Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755676Ab3IKQJZ (ORCPT ); Wed, 11 Sep 2013 12:09:25 -0400 Received: from mail-pa0-f48.google.com ([209.85.220.48]:45790 "EHLO mail-pa0-f48.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755047Ab3IKQJW (ORCPT ); Wed, 11 Sep 2013 12:09:22 -0400 From: Jiang Liu To: Andrew Morton , Tony Luck , Fenghua Yu , Shaohua Li Cc: liuj97@gmail.com, Jiang Liu , Ingo Molnar , Peter Zijlstra , Steven Rostedt , Jiri Kosina , Wang YanQing , linux-ia64@vger.kernel.org, linux-kernel@vger.kernel.org, linux-arch@vger.kernel.org Subject: [RFC PATCH v2 08/25] smp, IA64: kill SMP single function call interrupt Date: Thu, 12 Sep 2013 00:07:12 +0800 Message-Id: <1378915649-16395-9-git-send-email-liuj97@gmail.com> X-Mailer: git-send-email 1.8.1.2 In-Reply-To: <1378915649-16395-1-git-send-email-liuj97@gmail.com> References: <1378915649-16395-1-git-send-email-liuj97@gmail.com> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1951 Lines: 55 From: Jiang Liu 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. Signed-off-by: Jiang Liu Cc: 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 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/