linux-kernel - Re: [patch 00/11] Hardware Breakpoint interfaces

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Message-ID: <20090311172506.GC9547@in.ibm.com>
Date:	Wed, 11 Mar 2009 22:55:06 +0530
From:	"K.Prasad" <prasad@...ux.vnet.ibm.com>
To:	Alan Stern <stern@...land.harvard.edu>
Cc:	Ingo Molnar <mingo@...e.hu>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	Roland McGrath <roland@...hat.com>
Subject: Re: [patch 00/11] Hardware Breakpoint interfaces

On Wed, Mar 11, 2009 at 12:34:43PM -0400, Alan Stern wrote:
> On Wed, 11 Mar 2009, K.Prasad wrote:
> 
> > The hardware breakpoint interfaces haven't been put under any CONFIG_
> > till now, but I think we should bring them under a new config, say
> > CONFIG_HW_BREAKPOINT. It would help create a dependancy for
> > CONFIG_KSYM_TRACER too.
> 
> With these patches, ptrace is dependent on hw-breakpoint.  You can't 
> disable CONFIG_HW_BREAKPOINT without breaking ptrace.
> 
> Alan Stern
> 

Agreed. We might have to retain the old code for ptrace and put the new
implementation under #ifdef CONFIG_HW_BREAKPOINT to get them working.
What do you think?

Thanks,
K.Prasad

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