linux-kernel - Re: [PATCH 2/4] asmlinkage, x86: Add explicit _

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Message-ID: <CA+55aFwA=vBbtWT=Zt-pi1caNf6L-m6nDHFnsJeX0wgTBnHhFg@mail.gmail.com>
Date:	Tue, 1 Apr 2014 11:33:43 -0700
From:	Linus Torvalds <torvalds@...ux-foundation.org>
To:	Andi Kleen <andi@...stfloor.org>
Cc:	"the arch/x86 maintainers" <x86@...nel.org>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	Andi Kleen <ak@...ux.intel.com>
Subject: Re: [PATCH 2/4] asmlinkage, x86: Add explicit __visible to arch/x86/*

This still has these kinds of pointless changes. Why?

In the declaration of the function, the __visible is just noise. It's
not interesting to the caller, and doesn't add anything. In fact, I'd
argue that these kinds of declarations are not just noise, they are
*stupid* noise, because if the function is ever used by C code than
that "__visible" is pointless.

So get rid of the __visible. It's just more of the same confusion
where you think __visible and asmlinkage go together. They damn well
don't.

                  Linus

On Tue, Apr 1, 2014 at 10:32 AM, Andi Kleen <andi@...stfloor.org> wrote:
>  #include <asm/sections.h>
>
>  /* Interrupt handlers registered during init_IRQ */
> -extern asmlinkage void apic_timer_interrupt(void);
> -extern asmlinkage void x86_platform_ipi(void);
> -extern asmlinkage void kvm_posted_intr_ipi(void);
> -extern asmlinkage void error_interrupt(void);
> -extern asmlinkage void irq_work_interrupt(void);
...
> +extern asmlinkage __visible void apic_timer_interrupt(void);
> +extern asmlinkage __visible void x86_platform_ipi(void);
> +extern asmlinkage __visible void kvm_posted_intr_ipi(void);
> +extern asmlinkage __visible void error_interrupt(void);
> +extern asmlinkage __visible void irq_work_interrupt(void);
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