Messages in this thread Patch in this message | | | From | Greg Kroah-Hartman <> | Subject | [PATCH 3.17 11/25] arm: Tell irq work about self IPI support | Date | Mon, 13 Oct 2014 04:25:04 +0200 |
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3.17-stable review patch. If anyone has any objections, please let me know.
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From: Frederic Weisbecker <fweisbec@gmail.com>
commit 09f6edd424218eb69078551b2ecfada1f2d098eb upstream.
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) <peterz@infradead.org> Cc: Ingo Molnar <mingo@kernel.org> Cc: Paul E. McKenney <paulmck@linux.vnet.ibm.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Russell King <linux@arm.linux.org.uk> Cc: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Frederic Weisbecker <fweisbec@gmail.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
--- 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(-)
--- 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 --- /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 <asm/smp_plat.h> + +static inline bool arch_irq_work_has_interrupt(void) +{ + return is_smp(); +} + +#endif /* _ASM_ARM_IRQ_WORK_H */ --- a/arch/arm/kernel/smp.c +++ b/arch/arm/kernel/smp.c @@ -503,7 +503,7 @@ void arch_send_call_function_single_ipi( #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
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