ia64 code having CONFIG_X86_LOCAL_APIC

ia64 code having CONFIG_X86_LOCAL_APIC

[Ravikiran G Thirumalai]

Hi folks,
linux-2.5.17/arch/ia64/kernel/irq.c has a
#ifdef CONFIG_X86_LOCAL_APIC,
but I dont see the config option in any ia64 config.in files.....
wondering if this is just some piece of code which will never be compiled...

Also, linux-2.5.17/arch/ia64/kernel/irq.c prints apic_timer_irqs, and they
don't seem to be defined for ia64.  The piece of code (irq.c) is also covered 
by 
#ifdef CONFIG_X86
wonder if the condition is ever true.....

Pls let me know what I am missing

disclaimer: I don't know much about ia64 

Kiran

Re: ia64 code having CONFIG_X86_LOCAL_APIC

[David Mosberger]

There is a simple reason for this: the goal is (or at least "was")
that irq.c would eventually become platform-independent.  To prepare
for this, I keep the ia64 version of irq.c as much in sync with the
x86 version as possible (actually, I haven't check recently, so there
may have been some divergence while I wasn't watching).  So, yes,
there is some dead code in the ia64 version, but it does serve the
purpose to minimize the differences with the x86 version.

	--david

>>>>> On Thu, 23 May 2002 18:57:20 +0530, Ravikiran G Thirumalai <kiran@in.ibm.com> said:

  Ravikiran> Hi folks, linux-2.5.17/arch/ia64/kernel/irq.c has a
  Ravikiran> #ifdef CONFIG_X86_LOCAL_APIC, but I dont see the config
  Ravikiran> option in any ia64 config.in files.....  wondering if
  Ravikiran> this is just some piece of code which will never be
  Ravikiran> compiled...

  Ravikiran> Also, linux-2.5.17/arch/ia64/kernel/irq.c prints
  Ravikiran> apic_timer_irqs, and they don't seem to be defined for
  Ravikiran> ia64.  The piece of code (irq.c) is also covered by
  Ravikiran> #ifdef CONFIG_X86 wonder if the condition is ever
  Ravikiran> true.....

  Ravikiran> Pls let me know what I am missing

  Ravikiran> disclaimer: I don't know much about ia64

  Ravikiran> Kiran

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