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x86/irq: Remove vector_used_by_percpu_irq()

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Last user (lguest) is gone. Remove it.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: Andy Lutomirski <luto@kernel.org>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Steven Rostedt <rostedt@goodmis.org>
Link: http://lkml.kernel.org/r/20170828064956.201432430@linutronix.de
Signed-off-by: Ingo Molnar <mingo@kernel.org>
This commit is contained in:
Thomas Gleixner 2017-08-28 08:47:16 +02:00 committed by Ingo Molnar
parent 416b0c0faf
commit 69de72ec6d
3 changed files with 0 additions and 15 deletions
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1
arch/x86/include/asm/irq.h
View file

@ -44,7 +44,6 @@ extern __visible unsigned int do_IRQ(struct pt_regs *regs);
/* Interrupt vector management */
extern DECLARE_BITMAP(used_vectors, NR_VECTORS);
extern int vector_used_by_percpu_irq(unsigned int vector);
extern void init_ISA_irqs(void);

2
arch/x86/kernel/irq.c
View file

@ -346,8 +346,6 @@ __visible void __irq_entry smp_trace_x86_platform_ipi(struct pt_regs *regs)
set_irq_regs(old_regs);
}
EXPORT_SYMBOL_GPL(vector_used_by_percpu_irq);
#ifdef CONFIG_HOTPLUG_CPU
/* These two declarations are only used in check_irq_vectors_for_cpu_disable()

12
arch/x86/kernel/irqinit.c
View file

@ -55,18 +55,6 @@ DEFINE_PER_CPU(vector_irq_t, vector_irq) = {
[0 ... NR_VECTORS - 1] = VECTOR_UNUSED,
};
int vector_used_by_percpu_irq(unsigned int vector)
{
int cpu;
for_each_online_cpu(cpu) {
if (!IS_ERR_OR_NULL(per_cpu(vector_irq, cpu)[vector]))
return 1;
}
return 0;
}
void __init init_ISA_irqs(void)
{
struct irq_chip *chip = legacy_pic->chip;