Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1760044Ab2JLSJq (ORCPT ); Fri, 12 Oct 2012 14:09:46 -0400 Received: from mail-ee0-f46.google.com ([74.125.83.46]:37825 "EHLO mail-ee0-f46.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1759935Ab2JLSJo (ORCPT ); Fri, 12 Oct 2012 14:09:44 -0400 From: Frederic Weisbecker To: LKML Cc: Frederic Weisbecker , Peter Zijlstra , Thomas Gleixner , Ingo Molnar , Andrew Morton , Steven Rostedt Subject: [RFC PATCH 1/5] irq_work: Move irq_work_raise() declaration/default definition to arch headers Date: Fri, 12 Oct 2012 20:09:32 +0200 Message-Id: <1350065376-23353-2-git-send-email-fweisbec@gmail.com> X-Mailer: git-send-email 1.7.5.4 In-Reply-To: <1350065376-23353-1-git-send-email-fweisbec@gmail.com> References: <1350065376-23353-1-git-send-email-fweisbec@gmail.com> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 7320 Lines: 234 This optimization doesn't matter much. But this prepares the arch headers that we need to add a new API in order to detect when the arch hooks on the tick to implement the irq work. This is necessary later to make printk working in nohz CPUs. Signed-off-by: Frederic Weisbecker Cc: Peter Zijlstra Cc: Thomas Gleixner Cc: Ingo Molnar Cc: Andrew Morton Cc: Steven Rostedt --- arch/alpha/include/asm/irq_work.h | 6 ++++++ arch/arm/include/asm/irq_work.h | 1 + arch/arm64/include/asm/irq_work.h | 1 + arch/blackfin/include/asm/irq_work.h | 1 + arch/frv/include/asm/irq_work.h | 1 + arch/hexagon/include/asm/irq_work.h | 1 + arch/mips/include/asm/irq_work.h | 1 + arch/parisc/include/asm/irq_work.h | 1 + arch/powerpc/include/asm/irq_work.h | 6 ++++++ arch/s390/include/asm/irq_work.h | 1 + arch/sh/include/asm/irq_work.h | 1 + arch/sparc/include/asm/irq_work.h | 6 ++++++ arch/x86/include/asm/irq_work.h | 10 ++++++++++ arch/x86/kernel/irq_work.c | 4 ++-- include/asm-generic/irq_work.h | 9 +++++++++ include/linux/irq_work.h | 1 + kernel/irq_work.c | 7 ------- 17 files changed, 49 insertions(+), 9 deletions(-) create mode 100644 arch/alpha/include/asm/irq_work.h create mode 100644 arch/arm/include/asm/irq_work.h create mode 100644 arch/arm64/include/asm/irq_work.h create mode 100644 arch/blackfin/include/asm/irq_work.h create mode 100644 arch/frv/include/asm/irq_work.h create mode 100644 arch/hexagon/include/asm/irq_work.h create mode 100644 arch/mips/include/asm/irq_work.h create mode 100644 arch/parisc/include/asm/irq_work.h create mode 100644 arch/powerpc/include/asm/irq_work.h create mode 100644 arch/s390/include/asm/irq_work.h create mode 100644 arch/sh/include/asm/irq_work.h create mode 100644 arch/sparc/include/asm/irq_work.h create mode 100644 arch/x86/include/asm/irq_work.h create mode 100644 include/asm-generic/irq_work.h diff --git a/arch/alpha/include/asm/irq_work.h b/arch/alpha/include/asm/irq_work.h new file mode 100644 index 0000000..814ff3d --- /dev/null +++ b/arch/alpha/include/asm/irq_work.h @@ -0,0 +1,6 @@ +#ifndef _ALPHA_IRQ_WORK_H +#define _ALPHA_IRQ_WORK_H + +extern void arch_irq_work_raise(void); + +#endif diff --git a/arch/arm/include/asm/irq_work.h b/arch/arm/include/asm/irq_work.h new file mode 100644 index 0000000..f1bffa2 --- /dev/null +++ b/arch/arm/include/asm/irq_work.h @@ -0,0 +1 @@ +#include diff --git a/arch/arm64/include/asm/irq_work.h b/arch/arm64/include/asm/irq_work.h new file mode 100644 index 0000000..f1bffa2 --- /dev/null +++ b/arch/arm64/include/asm/irq_work.h @@ -0,0 +1 @@ +#include diff --git a/arch/blackfin/include/asm/irq_work.h b/arch/blackfin/include/asm/irq_work.h new file mode 100644 index 0000000..f1bffa2 --- /dev/null +++ b/arch/blackfin/include/asm/irq_work.h @@ -0,0 +1 @@ +#include diff --git a/arch/frv/include/asm/irq_work.h b/arch/frv/include/asm/irq_work.h new file mode 100644 index 0000000..f1bffa2 --- /dev/null +++ b/arch/frv/include/asm/irq_work.h @@ -0,0 +1 @@ +#include diff --git a/arch/hexagon/include/asm/irq_work.h b/arch/hexagon/include/asm/irq_work.h new file mode 100644 index 0000000..f1bffa2 --- /dev/null +++ b/arch/hexagon/include/asm/irq_work.h @@ -0,0 +1 @@ +#include diff --git a/arch/mips/include/asm/irq_work.h b/arch/mips/include/asm/irq_work.h new file mode 100644 index 0000000..f1bffa2 --- /dev/null +++ b/arch/mips/include/asm/irq_work.h @@ -0,0 +1 @@ +#include diff --git a/arch/parisc/include/asm/irq_work.h b/arch/parisc/include/asm/irq_work.h new file mode 100644 index 0000000..f1bffa2 --- /dev/null +++ b/arch/parisc/include/asm/irq_work.h @@ -0,0 +1 @@ +#include diff --git a/arch/powerpc/include/asm/irq_work.h b/arch/powerpc/include/asm/irq_work.h new file mode 100644 index 0000000..8b9927f --- /dev/null +++ b/arch/powerpc/include/asm/irq_work.h @@ -0,0 +1,6 @@ +#ifndef _ASM_POWERPC_IRQ_WORK_H +#define _ASM_POWERPC_IRQ_WORK_H + +extern void arch_irq_work_raise(void); + +#endif diff --git a/arch/s390/include/asm/irq_work.h b/arch/s390/include/asm/irq_work.h new file mode 100644 index 0000000..f1bffa2 --- /dev/null +++ b/arch/s390/include/asm/irq_work.h @@ -0,0 +1 @@ +#include diff --git a/arch/sh/include/asm/irq_work.h b/arch/sh/include/asm/irq_work.h new file mode 100644 index 0000000..f1bffa2 --- /dev/null +++ b/arch/sh/include/asm/irq_work.h @@ -0,0 +1 @@ +#include diff --git a/arch/sparc/include/asm/irq_work.h b/arch/sparc/include/asm/irq_work.h new file mode 100644 index 0000000..1d062a6 --- /dev/null +++ b/arch/sparc/include/asm/irq_work.h @@ -0,0 +1,6 @@ +#ifndef ___ASM_SPARC_IRQ_H +#define ___ASM_SPARC_IRQ_H + +extern void arch_irq_work_raise(void); + +#endif diff --git a/arch/x86/include/asm/irq_work.h b/arch/x86/include/asm/irq_work.h new file mode 100644 index 0000000..38eed96 --- /dev/null +++ b/arch/x86/include/asm/irq_work.h @@ -0,0 +1,10 @@ +#ifndef _ASM_X86_IRQ_WORK_H +#define _ASM_X86_IRQ_WORK_H + +#ifndef CONFIG_X86_LOCAL_APIC +#include +# else +extern void arch_irq_work_raise(void); +#endif + +#endif diff --git a/arch/x86/kernel/irq_work.c b/arch/x86/kernel/irq_work.c index ca8f703..95f5d4e 100644 --- a/arch/x86/kernel/irq_work.c +++ b/arch/x86/kernel/irq_work.c @@ -18,13 +18,13 @@ void smp_irq_work_interrupt(struct pt_regs *regs) irq_exit(); } +#ifdef CONFIG_X86_LOCAL_APIC void arch_irq_work_raise(void) { -#ifdef CONFIG_X86_LOCAL_APIC if (!cpu_has_apic) return; apic->send_IPI_self(IRQ_WORK_VECTOR); apic_wait_icr_idle(); -#endif } +#endif diff --git a/include/asm-generic/irq_work.h b/include/asm-generic/irq_work.h new file mode 100644 index 0000000..a2d4108 --- /dev/null +++ b/include/asm-generic/irq_work.h @@ -0,0 +1,9 @@ +#ifndef __ASM_GENERIC_ATOMIC_H +#define __ASM_GENERIC_ATOMIC_H + +/* + * Lame architectures will get the timer tick callback + */ +static inline void arch_irq_work_raise(void) { } + +#endif diff --git a/include/linux/irq_work.h b/include/linux/irq_work.h index 6a9e8f5..b39ea0b 100644 --- a/include/linux/irq_work.h +++ b/include/linux/irq_work.h @@ -2,6 +2,7 @@ #define _LINUX_IRQ_WORK_H #include +#include struct irq_work { unsigned long flags; diff --git a/kernel/irq_work.c b/kernel/irq_work.c index 1588e3b..44a5b19 100644 --- a/kernel/irq_work.c +++ b/kernel/irq_work.c @@ -49,13 +49,6 @@ static bool irq_work_claim(struct irq_work *work) return true; } -void __weak arch_irq_work_raise(void) -{ - /* - * Lame architectures will get the timer tick callback - */ -} - /* * Queue the entry and raise the IPI if needed. */ -- 1.7.5.4 -- 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/