linux-kernel - Re: [RFC patch 08/18] cnt32_to_63 should use smp

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Date:	Fri, 7 Nov 2008 10:45:19 -0800
From:	Andrew Morton <akpm@...ux-foundation.org>
To:	Linus Torvalds <torvalds@...ux-foundation.org>
Cc:	mathieu.desnoyers@...ymtl.ca, dhowells@...hat.com, nico@....org,
	mingo@...e.hu, a.p.zijlstra@...llo.nl,
	linux-kernel@...r.kernel.org, ralf@...ux-mips.org,
	benh@...nel.crashing.org, paulus@...ba.org, davem@...emloft.net,
	mingo@...hat.com, tglx@...utronix.de, rostedt@...dmis.org,
	linux-arch@...r.kernel.org, Dave Young <hidave.darkstar@...il.com>
Subject: Re: [RFC patch 08/18] cnt32_to_63 should use smp_rmb()

On Fri, 7 Nov 2008 10:36:27 -0800 (PST)
Linus Torvalds <torvalds@...ux-foundation.org> wrote:

> 
> 
> On Fri, 7 Nov 2008, Andrew Morton wrote:
> > 
> > Referring to include/linux/tracepoint.h:DEFINE_TRACE()?
> > 
> > It does look a bit fragile.  Does every .c file which included
> > include/trace/block.h get a copy of __tracepoint_block_rq_issue,
> > whether or not it used that tracepoint? Hopefully not.
> 
> Look at "ratelimit()" too. Broken, broken.

Yup.  Easy enough to fix, but...

>  Of course, I don't think it's 
> actually _used_ anywhere, so..
> 

removing it altogether would be best, I think.  It's a bit of an odd
thing.

I'll see what this

--- a/include/linux/ratelimit.h~a
+++ a/include/linux/ratelimit.h
@@ -17,11 +17,4 @@ struct ratelimit_state {
 		struct ratelimit_state name = {interval, burst,}
 
 extern int __ratelimit(struct ratelimit_state *rs);
-
-static inline int ratelimit(void)
-{
-	static DEFINE_RATELIMIT_STATE(rs, DEFAULT_RATELIMIT_INTERVAL,
-					DEFAULT_RATELIMIT_BURST);
-	return __ratelimit(&rs);
-}
 #endif

breaks.
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