linux-kernel - Re: [tip:x86/mm] x86, mm, kprobes: fault.c, simplify notify_page

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Message-ID: <49A2CD1E.60606@redhat.com>
Date:	Mon, 23 Feb 2009 11:21:50 -0500
From:	Masami Hiramatsu <mhiramat@...hat.com>
To:	Ingo Molnar <mingo@...e.hu>
CC:	Andrew Morton <akpm@...ux-foundation.org>, hpa@...or.com,
	mingo@...hat.com, torvalds@...ux-foundation.org,
	tglx@...utronix.de, linux-kernel@...r.kernel.org,
	linux-tip-commits@...r.kernel.org,
	systemtap-ml <systemtap@...rces.redhat.com>,
	Ananth N Mavinakayanahalli <ananth@...ibm.com>,
	Jim Keniston <jkenisto@...ibm.com>
Subject: Re: [tip:x86/mm] x86, mm, kprobes: fault.c, simplify	notify_page_fault()

Hi Ingo,

Ingo Molnar wrote:
> another very small thing, while we are discussing kprobes:
> 
> I always found that the __kprobes annotation is very confusingly 
> euphemistic: what those annotations really mean is not 
> 'kprobes', but 'no kprobes'.

As far as I know, __kprobes originally means 'this function will be
called from kprobes'. However, now many functions are tagged as
__kprobes, it might be confusingly.

> So how about renaming __kprobes to __nokprobes, similar to how 
> we have the notrace attribute?

Would you mean that will include changing section name of
'.text.kprobes'? That's what I mind.

> We have about 350 __kprobes annotations in the kernel, so 
> renaming it now would not be practical - but any objections 
> against me sending Linus a rename patch somewhere late in the 
> next merge window that just does this rename?

Just renaming __kprobes to __nokprobes seems good for me.

Thank you!


> [ likewise, i'll rename notrace to __notrace to make it visually 
>   less intrusive to the return value type. There's a lot less 
>   such annotations in the kernel. ]
> 
> 	Ingo
> --
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-- 
Masami Hiramatsu

Software Engineer
Hitachi Computer Products (America) Inc.
Software Solutions Division

e-mail: mhiramat@...hat.com

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