mirror of
https://mirrors.bfsu.edu.cn/git/linux.git
synced 2024-12-15 15:04:27 +08:00
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
/*
|
|
* x86 specific code for irq_work
|
|
*
|
|
* Copyright (C) 2010 Red Hat, Inc., Peter Zijlstra <pzijlstr@redhat.com>
|
|
*/
|
|
|
|
#include <linux/kernel.h>
|
|
#include <linux/irq_work.h>
|
|
#include <linux/hardirq.h>
|
|
#include <asm/apic.h>
|
|
#include <asm/trace/irq_vectors.h>
|
|
|
|
static inline void irq_work_entering_irq(void)
|
|
{
|
|
irq_enter();
|
|
ack_APIC_irq();
|
|
}
|
|
|
|
static inline void __smp_irq_work_interrupt(void)
|
|
{
|
|
inc_irq_stat(apic_irq_work_irqs);
|
|
irq_work_run();
|
|
}
|
|
|
|
__visible void smp_irq_work_interrupt(struct pt_regs *regs)
|
|
{
|
|
irq_work_entering_irq();
|
|
__smp_irq_work_interrupt();
|
|
exiting_irq();
|
|
}
|
|
|
|
__visible void smp_trace_irq_work_interrupt(struct pt_regs *regs)
|
|
{
|
|
irq_work_entering_irq();
|
|
trace_irq_work_entry(IRQ_WORK_VECTOR);
|
|
__smp_irq_work_interrupt();
|
|
trace_irq_work_exit(IRQ_WORK_VECTOR);
|
|
exiting_irq();
|
|
}
|
|
|
|
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
|
|
}
|