linux-kernel - Re: [PATCH 11/11] x86: perf_event_intel_pt.c: use arch

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Date:	Mon, 1 Jun 2015 10:13:01 -0400
From:	Paul Gortmaker <paul.gortmaker@...driver.com>
To:	Peter Zijlstra <peterz@...radead.org>
CC:	<linux-kernel@...r.kernel.org>, Paul Mackerras <paulus@...ba.org>,
	Ingo Molnar <mingo@...hat.com>,
	Arnaldo Carvalho de Melo <acme@...nel.org>,
	Thomas Gleixner <tglx@...utronix.de>,
	"H. Peter Anvin" <hpa@...or.com>, <x86@...nel.org>
Subject: Re: [PATCH 11/11] x86: perf_event_intel_pt.c: use arch_initcall to
 hook in enabling

On 15-06-01 03:05 AM, Peter Zijlstra wrote:
> On Sun, May 31, 2015 at 08:54:12PM -0400, Paul Gortmaker wrote:
>> This was using module_init, but there is no way this code can
>> be modular.
> 
> Same thing; you could actually make this modular if you wanted to.
> 

..and this file is even in the same Makefile line of the prev. one:

arch/x86/kernel/cpu/Makefile:

  obj-$(CONFIG_CPU_SUP_INTEL)             += perf_event_intel_pt.o perf_event_intel_bts.o

and in arch/x86/Kconfig.cpu:

  config CPU_SUP_INTEL
        default y
        bool "Support Intel processors" if PROCESSOR_SELECT

...so again, unless I'm missing something obvious (entirely possible
for a Monday) this too seems always built in to me.

Paul.
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