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https://github.com/AuxXxilium/linux_dsm_epyc7002.git
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1d9090e2fb
These handlers are all referenced from assembler stubs, so need to be visible. The handlers without arguments become asmlinkage, the others __visible to not force regparms(0) on x86-32. I put it all into a single patch, please let me know if you want it it split up. Signed-off-by: Andi Kleen <ak@linux.intel.com> Link: http://lkml.kernel.org/r/1375740170-7446-4-git-send-email-andi@firstfloor.org Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
51 lines
969 B
C
51 lines
969 B
C
/*
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* x86 specific code for irq_work
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*
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* Copyright (C) 2010 Red Hat, Inc., Peter Zijlstra <pzijlstr@redhat.com>
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*/
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#include <linux/kernel.h>
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#include <linux/irq_work.h>
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#include <linux/hardirq.h>
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#include <asm/apic.h>
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#include <asm/trace/irq_vectors.h>
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static inline void irq_work_entering_irq(void)
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{
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irq_enter();
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ack_APIC_irq();
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}
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static inline void __smp_irq_work_interrupt(void)
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{
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inc_irq_stat(apic_irq_work_irqs);
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irq_work_run();
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}
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__visible void smp_irq_work_interrupt(struct pt_regs *regs)
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{
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irq_work_entering_irq();
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__smp_irq_work_interrupt();
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exiting_irq();
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}
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__visible void smp_trace_irq_work_interrupt(struct pt_regs *regs)
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{
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irq_work_entering_irq();
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trace_irq_work_entry(IRQ_WORK_VECTOR);
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__smp_irq_work_interrupt();
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trace_irq_work_exit(IRQ_WORK_VECTOR);
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exiting_irq();
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}
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void arch_irq_work_raise(void)
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{
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#ifdef CONFIG_X86_LOCAL_APIC
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if (!cpu_has_apic)
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return;
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apic->send_IPI_self(IRQ_WORK_VECTOR);
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apic_wait_icr_idle();
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#endif
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}
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