From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753969AbaIJVeo (ORCPT ); Wed, 10 Sep 2014 17:34:44 -0400 Received: from mail-wg0-f42.google.com ([74.125.82.42]:60424 "EHLO mail-wg0-f42.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753905AbaIJVdm (ORCPT ); Wed, 10 Sep 2014 17:33:42 -0400 From: Frederic Weisbecker To: LKML Cc: Frederic Weisbecker , Peter Zijlstra , Dave Jones , Thomas Gleixner , Russell King , Catalin Iacob , "Paul E . McKenney" , Will Deacon , Ingo Molnar , Catalin Marinas Subject: [PATCH 5/8] arm: Tell irq work about self IPI support Date: Wed, 10 Sep 2014 23:33:25 +0200 Message-Id: <1410384808-14760-6-git-send-email-fweisbec@gmail.com> X-Mailer: git-send-email 2.1.0 In-Reply-To: <1410384808-14760-1-git-send-email-fweisbec@gmail.com> References: <1410384808-14760-1-git-send-email-fweisbec@gmail.com> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org ARM irq work IPI support depends on SMP support. That information is partly known at early boottime. Lets implement arch_irq_work_has_interrupt() accordingly. Cc: Ingo Molnar Cc: Paul E. McKenney Cc: Peter Zijlstra Cc: Russell King Cc: Thomas Gleixner Signed-off-by: Frederic Weisbecker --- arch/arm/include/asm/Kbuild | 1 - arch/arm/include/asm/irq_work.h | 11 +++++++++++ arch/arm/kernel/smp.c | 2 +- 3 files changed, 12 insertions(+), 2 deletions(-) create mode 100644 arch/arm/include/asm/irq_work.h diff --git a/arch/arm/include/asm/Kbuild b/arch/arm/include/asm/Kbuild index 202905e..70cd84e 100644 --- a/arch/arm/include/asm/Kbuild +++ b/arch/arm/include/asm/Kbuild @@ -11,7 +11,6 @@ generic-y += hash.h generic-y += ioctl.h generic-y += ipcbuf.h generic-y += irq_regs.h -generic-y += irq_work.h generic-y += kdebug.h generic-y += local.h generic-y += local64.h diff --git a/arch/arm/include/asm/irq_work.h b/arch/arm/include/asm/irq_work.h new file mode 100644 index 0000000..712d03e --- /dev/null +++ b/arch/arm/include/asm/irq_work.h @@ -0,0 +1,11 @@ +#ifndef __ASM_ARM_IRQ_WORK_H +#define __ASM_ARM_IRQ_WORK_H + +#include + +static inline bool arch_irq_work_has_interrupt(void) +{ + return is_smp(); +} + +#endif /* _ASM_ARM_IRQ_WORK_H */ diff --git a/arch/arm/kernel/smp.c b/arch/arm/kernel/smp.c index 9388a3d..bbe22fc 100644 --- a/arch/arm/kernel/smp.c +++ b/arch/arm/kernel/smp.c @@ -503,7 +503,7 @@ void arch_send_call_function_single_ipi(int cpu) #ifdef CONFIG_IRQ_WORK void arch_irq_work_raise(void) { - if (is_smp()) + if (arch_irq_work_has_interrupt()) smp_cross_call(cpumask_of(smp_processor_id()), IPI_IRQ_WORK); } #endif -- 2.1.0