linux-kernel - Re: [PATCH 2/4] tracepoints: Move struct tracepoint to new tracepoint-defs.h header

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Message-ID: <20151201205624.1a33124f@grimm.local.home>
Date:	Tue, 1 Dec 2015 20:56:24 -0500
From:	Steven Rostedt <rostedt@...dmis.org>
To:	Andi Kleen <andi@...stfloor.org>
Cc:	x86@...nel.org, peterz@...radead.org, linux-kernel@...r.kernel.org,
	Andi Kleen <ak@...ux.intel.com>
Subject: Re: [PATCH 2/4] tracepoints: Move struct tracepoint to new
 tracepoint-defs.h header

On Tue,  1 Dec 2015 17:00:58 -0800
Andi Kleen <andi@...stfloor.org> wrote:

> From: Andi Kleen <ak@...ux.intel.com>
> 
> Steven recommended open coding access to tracepoint->key to add
> trace points to headers. Unfortunately this is difficult for some
> headers (such as x86 asm/msr.h) because including tracepoint.h
> includes so many other headers that it causes include loops.
> The main problem is the include of linux/rcupdate.h, which
> pulls in a lot of other headers. The rcu header is only needed
> when actually defining trace points.
> 
> Move the struct tracepoint into a separate tracepoint-defs.h
> header that can be included without pulling in all of RCU.
> 
> Signed-off-by: Andi Kleen <ak@...ux.intel.com>

Acked-by: Steven Rostedt <rostedt@...dmis.org>

-- Steve
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