linux-kernel - Re: [PATCH 2/2] perf,hw_breakpoint: Initialize hardware api earlier

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Date:	Tue, 16 Nov 2010 22:24:14 +0100
From:	Peter Zijlstra <a.p.zijlstra@...llo.nl>
To:	Jason Wessel <jason.wessel@...driver.com>
Cc:	Frederic Weisbecker <fweisbec@...il.com>,
	Ingo Molnar <mingo@...e.hu>,
	LKML <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH 2/2] perf,hw_breakpoint: Initialize hardware api earlier

On Sun, 2010-11-14 at 07:33 -0600, Jason Wessel wrote:
> 
> This sounds to me like it would be early enough.  I could certainly run
> the simple test case in the patch to make sure it still works, if you
> point me to your patch(es).  I imagine I should also test the hand off
> procedure where the debugger uses the registers directly up until the
> point that perf is capable of handling reservations for the hw
> breakpoint slots. 

I had to actually write them -- I had some hacky things in my sysfs RFC.
Find attached.

View attachment "perf-i386-fix-kconfig.patch" of type "text/x-patch" (879 bytes)

View attachment "perf-fix-hw-init.patch" of type "text/x-patch" (6904 bytes)

View attachment "perf-fix-init.patch" of type "text/x-patch" (1403 bytes)

View attachment "perf-fix-tp-bp-init.patch" of type "text/x-patch" (1825 bytes)