linux-kernel - Re: [PATCH v6 07/14] ARM: Remove use of struct kprobe from generic probes code

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Date:	Fri, 28 Feb 2014 14:11:32 +0000
From:	"Jon Medhurst (Tixy)" <tixy@...aro.org>
To:	Russell King - ARM Linux <linux@....linux.org.uk>
Cc:	David Long <dave.long@...aro.org>,
	linux-arm-kernel@...ts.infradead.org, Rabin Vincent <rabin@....in>,
	Oleg Nesterov <oleg@...hat.com>,
	Srikar Dronamraju <srikar@...ux.vnet.ibm.com>,
	Ingo Molnar <mingo@...hat.com>,
	Masami Hiramatsu <masami.hiramatsu.pt@...achi.com>,
	Ananth N Mavinakayanahalli <ananth@...ibm.com>,
	Anil S Keshavamurthy <anil.s.keshavamurthy@...el.com>,
	davem@...emloft.net, Peter Zijlstra <a.p.zijlstra@...llo.nl>,
	Paul Mackerras <paulus@...ba.org>,
	Arnaldo Carvalho de Melo <acme@...stprotocols.net>,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH v6 07/14] ARM: Remove use of struct kprobe from generic
 probes code

On Fri, 2014-02-28 at 10:12 +0000, Russell King - ARM Linux wrote:
> On Mon, Feb 10, 2014 at 02:38:58AM -0500, David Long wrote:
> > diff --git a/arch/arm/kernel/probes.c b/arch/arm/kernel/probes.c
> > index 7cd1763..179deac 100644
> > --- a/arch/arm/kernel/probes.c
> > +++ b/arch/arm/kernel/probes.c
> > @@ -12,11 +12,9 @@
> >   */
> >  
> >  #include <linux/kernel.h>
> > -#include <linux/kprobes.h>
> >  #include <asm/system_info.h>
> 
> How well has this code been tested?

>From the error below I assume only when __LINUX_ARM_ARCH__ >= 7

I have v5 and v6 hardware and will give it a go on those. I would do v4
but I've no idea how to get a kernel onto the Assabet I rescued from a
skip...

>   This file doesn't even build because
> (I suspect) the above change:
> 
> arch/arm/kernel/probes.c: In function 'test_alu_write_pc_interworking':
> arch/arm/kernel/probes.c:68:2: error: implicit declaration of function 'BUG_ON' [-Werror=implicit-function-declaration]
> make[2]: *** [arch/arm/kernel/probes.o] Error 1
> 
> This is because linux/kprobes.h includes linux/bug.h, which would provide
> the requirements for BUG_ON().

-- 
Tixy

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