linux-kernel - Re: [PATCH 0/6] hw_breakpoint: Let the user choose not to build it (and perf too)

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Message-ID: <20110427170253.GA1753@nowhere>
Date:	Wed, 27 Apr 2011 19:02:58 +0200
From:	Frederic Weisbecker <fweisbec@...il.com>
To:	LKML <linux-kernel@...r.kernel.org>
Cc:	Peter Zijlstra <a.p.zijlstra@...llo.nl>,
	Will Deacon <will.deacon@....com>,
	Prasad <prasad@...ux.vnet.ibm.com>,
	Paul Mundt <lethal@...ux-sh.org>,
	Jason Wessel <jason.wessel@...driver.com>,
	"H . Peter Anvin" <hpa@...or.com>,
	Thomas Gleixner <tglx@...utronix.de>,
	Ingo Molnar <mingo@...e.hu>
Subject: Re: [PATCH 0/6] hw_breakpoint: Let the user choose not to build it
 (and perf too)

On Wed, Apr 27, 2011 at 06:59:56PM +0200, Frederic Weisbecker wrote:
> Hi,
> 
> Until now, x86 and superh32 had to always build hw_breakpoint and perf.
> And powerpc and arm were always building hw_breakpoints when perf
> was enabled.
> 
> After this patchset, one can simply disable hw_breakpoints if he
> selected CONFIG_EXPERT. Afterward the user is free to select perf
> or not. Except on SH unfortunately because that would require a
> bit of change in ptrace to support singlestep failures.
> 
> Frederic Weisbecker (6):
>   hw_breakpoints: Split hardware breakpoints config
>   hw_breakpoints: Migrate breakpoint conditional build under new config
>   x86: Allow the user not to build hw_breakpoints
>   hw_breakpoints: Breakpoints arch ability don't need perf events
>   hw_breakpoints: Only force perf events if breakpoints are selected
>   hw_breakpoints: Drop remaining misplaced dependency on perf

Ah, and every !x86 archs touched by this patchset have been compile tested only.
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