Re: [Patch Part3 v4 18/38] x86: irq_remapping: Clean up unsued code

[Bjorn Helgaas <bhelgaas@google.com>]

s/unsued/unused/ in subject (here and other patches).

"Clean up" is slightly ambiguous; it could mean either "make better" or
"remove."  "Remove unused code" would be less ambiguous.

On Tue, Nov 25, 2014 at 03:49:42PM +0800, Jiang Liu wrote:
> Now we have converted to hierarchy irqdomain, so clean up unused code.
> 
> Signed-off-by: Jiang Liu <jiang.liu@linux.intel.com>
> Tested-by: Joerg Roedel <jroedel@suse.de>
> ---
>  arch/x86/include/asm/irq_remapping.h |   23 ----------------------
>  arch/x86/kernel/apic/vector.c        |    1 -
>  drivers/iommu/irq_remapping.c        |   36 ----------------------------------
>  3 files changed, 60 deletions(-)
> 
> diff --git a/arch/x86/include/asm/irq_remapping.h b/arch/x86/include/asm/irq_remapping.h
> index de8470b6f36a..6ba243126b3b 100644
> --- a/arch/x86/include/asm/irq_remapping.h
> +++ b/arch/x86/include/asm/irq_remapping.h
> @@ -26,12 +26,7 @@
>  #include <asm/hw_irq.h>
>  #include <asm/io_apic.h>
>  
> -struct IO_APIC_route_entry;
> -struct io_apic_irq_attr;
> -struct irq_chip;
>  struct msi_msg;
> -struct pci_dev;
> -struct irq_cfg;
>  struct irq_alloc_info;
>  
>  #ifdef CONFIG_IRQ_REMAP
> @@ -44,13 +39,7 @@ extern int irq_remapping_enable(void);
>  extern void irq_remapping_disable(void);
>  extern int irq_remapping_reenable(int);
>  extern int irq_remap_enable_fault_handling(void);
> -extern void free_remapped_irq(int irq);
>  extern void panic_if_irq_remap(const char *msg);
> -extern bool setup_remapped_irq(int irq,
> -			       struct irq_cfg *cfg,
> -			       struct irq_chip *chip);
> -
> -void irq_remap_modify_chip_defaults(struct irq_chip *chip);
>  
>  extern struct irq_domain *
>  irq_remapping_get_ir_irq_domain( struct irq_alloc_info *info);
> @@ -77,23 +66,11 @@ static inline int irq_remapping_enable(void) { return -ENODEV; }
>  static inline void irq_remapping_disable(void) { }
>  static inline int irq_remapping_reenable(int eim) { return -ENODEV; }
>  static inline int irq_remap_enable_fault_handling(void) { return -ENODEV; }
> -static inline void free_remapped_irq(int irq) { }
>  
>  static inline void panic_if_irq_remap(const char *msg)
>  {
>  }
>  
> -static inline void irq_remap_modify_chip_defaults(struct irq_chip *chip)
> -{
> -}
> -
> -static inline bool setup_remapped_irq(int irq,
> -				      struct irq_cfg *cfg,
> -				      struct irq_chip *chip)
> -{
> -	return false;
> -}
> -
>  static inline struct irq_domain *
>  irq_remapping_get_ir_irq_domain(struct irq_alloc_info *info)
>  {
> diff --git a/arch/x86/kernel/apic/vector.c b/arch/x86/kernel/apic/vector.c
> index 31dc4a871673..ca30365507a0 100644
> --- a/arch/x86/kernel/apic/vector.c
> +++ b/arch/x86/kernel/apic/vector.c
> @@ -283,7 +283,6 @@ static void x86_vector_free_irqs(struct irq_domain *domain,
>  	for (i = 0; i < nr_irqs; i++) {
>  		irq_data = irq_domain_get_irq_data(x86_vector_domain, virq + i);
>  		if (irq_data && irq_data->chip_data) {
> -			free_remapped_irq(virq);
>  			clear_irq_vector(virq + i, irq_data->chip_data);
>  			free_irq_cfg(irq_data->chip_data);
>  #ifdef	CONFIG_X86_IO_APIC
> diff --git a/drivers/iommu/irq_remapping.c b/drivers/iommu/irq_remapping.c
> index d175d6911821..3c3da04da8c5 100644
> --- a/drivers/iommu/irq_remapping.c
> +++ b/drivers/iommu/irq_remapping.c
> @@ -26,11 +26,6 @@ int no_x2apic_optout;
>  
>  static struct irq_remap_ops *remap_ops;
>  
> -static bool irq_remapped(struct irq_cfg *cfg)
> -{
> -	return (cfg->remapped == 1);
> -}
> -
>  static void irq_remapping_disable_io_apic(void)
>  {
>  	/*
> @@ -160,17 +155,6 @@ int __init irq_remap_enable_fault_handling(void)
>  	return remap_ops->enable_faulting();
>  }
>  
> -void free_remapped_irq(int irq)
> -{
> -	struct irq_cfg *cfg = irq_cfg(irq);
> -
> -	if (!remap_ops || !remap_ops->free_irq)
> -		return;
> -
> -	if (irq_remapped(cfg))
> -		remap_ops->free_irq(irq);
> -}
> -
>  void panic_if_irq_remap(const char *msg)
>  {
>  	if (irq_remapping_enabled)
> @@ -195,26 +179,6 @@ void irq_remapping_print_chip(struct irq_data *data, struct seq_file *p)
>  		seq_printf(p, " %s", data->chip->name);
>  }
>  
> -static void ir_print_prefix(struct irq_data *data, struct seq_file *p)
> -{
> -	seq_printf(p, " IR-%s", data->chip->name);
> -}
> -
> -void irq_remap_modify_chip_defaults(struct irq_chip *chip)
> -{
> -	chip->irq_print_chip = ir_print_prefix;
> -	chip->irq_ack = ir_ack_apic_edge;
> -}
> -
> -bool setup_remapped_irq(int irq, struct irq_cfg *cfg, struct irq_chip *chip)
> -{
> -	if (!irq_remapped(cfg))
> -		return false;
> -	irq_set_status_flags(irq, IRQ_MOVE_PCNTXT);
> -	irq_remap_modify_chip_defaults(chip);
> -	return true;
> -}
> -
>  /**
>   * irq_remapping_get_ir_irq_domain - Get the irqdomain associated with the IOMMU
>   *				     device serving request @info
> -- 
> 1.7.10.4
>