From 09f6edd424218eb69078551b2ecfada1f2d098eb Mon Sep 17 00:00:00 2001 From: Frederic Weisbecker Date: Sat, 16 Aug 2014 18:47:53 +0200 Subject: [PATCH] arm: Tell irq work about self IPI support 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. Acked-by: Peter Zijlstra (Intel) 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 202905e7ea0c..70cd84eb7fda 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 000000000000..712d03e5973a --- /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 9388a3d479e1..bbe22fcb78f6 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 -- 2.34.1