From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753311AbbAWFej (ORCPT ); Fri, 23 Jan 2015 00:34:39 -0500 Received: from mga01.intel.com ([192.55.52.88]:26947 "EHLO mga01.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752953AbbAWFef (ORCPT ); Fri, 23 Jan 2015 00:34:35 -0500 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="4.97,862,1389772800"; d="scan'208";a="444041920" From: Jiang Liu To: Thomas Gleixner , Tony Luck , Fenghua Yu , Jiang Liu Cc: Borislav Petkov , linux-kernel@vger.kernel.org, linux-ia64@vger.kernel.org Subject: [Resend Patch v4 04/16] smp, IA64: Kill SMP single function call interrupt Date: Fri, 23 Jan 2015 13:36:43 +0800 Message-Id: <1421991416-20297-5-git-send-email-jiang.liu@linux.intel.com> X-Mailer: git-send-email 1.7.10.4 In-Reply-To: <1421991416-20297-1-git-send-email-jiang.liu@linux.intel.com> References: <1421991416-20297-1-git-send-email-jiang.liu@linux.intel.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 interrupt is needed for architecture specific code to support generic SMP function call interfaces, so kill the redundant single function call interrupt. 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 9fcd4e63048f..0532909b6e8e 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) -- 1.7.10.4