linux-kernel - Re: [PATCH] platform: intel_turbo_max

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Date:   Fri, 17 Feb 2017 10:42:07 -0500
From:   Paul Gortmaker <paul.gortmaker@...driver.com>
To:     Darren Hart <dvhart@...radead.org>
CC:     <linux-kernel@...r.kernel.org>,
        Andy Shevchenko <andy@...radead.org>,
        Srinivas Pandruvada <srinivas.pandruvada@...ux.intel.com>,
        <platform-driver-x86@...r.kernel.org>
Subject: Re: [PATCH] platform: intel_turbo_max_3: make it explicitly
 non-modular

[Re: [PATCH] platform: intel_turbo_max_3: make it explicitly non-modular] On 16/02/2017 (Thu 19:37) Darren Hart wrote:

> On Mon, Feb 13, 2017 at 07:37:00PM -0500, Paul Gortmaker wrote:
> > The Kconfig currently controlling compilation of this code is:
> > 
> > drivers/platform/x86/Kconfig:config INTEL_TURBO_MAX_3
> > drivers/platform/x86/Kconfig:   bool "Intel Turbo Boost Max Technology 3.0 enumeration driver"
> > 
> > ...meaning that it currently is not being built as a module by anyone.
> > 
> > Lets remove the couple traces of modular infrastructure use, so that
> > when reading the driver there is no doubt it is builtin-only.
> > 
> > Also note that MODULE_DEVICE_TABLE is a no-op for non-modular code.
> > 
> > We also delete the MODULE_LICENSE tag etc. since all that information
> > was (or is now) contained at the top of the file in the comments.
> > 
> > We do uncover some implicit includes during build coverage that
> > were hidden behind the module.h which pulls in a lot of dependants.
> > 
> 
> Paul, this all looks so very familiar... have we been through this before? Maybe
> for another driver...

Can't imagine why you'd say that....  :)

$ git log --oneline --author=Gortmaker drivers/platform
da43bf0c21e5 intel_pmic_gpio: Make explicitly non-modular
f48d1496b853 platform/olpc: Make ec explicitly non-modular
f52ab44fb748 platform/x86: Make intel_scu_ipc explicitly non-modular
1dda2b42db1b drivers/platform: Convert non-modular pdev_bus to use builtin_platform_driver

P.
--

> 
> > Cc: Darren Hart <dvhart@...radead.org>
> > Cc: Andy Shevchenko <andy@...radead.org>
> > Cc: Srinivas Pandruvada <srinivas.pandruvada@...ux.intel.com>
> 
> Srinivas, any objections?
> 
> > Cc: platform-driver-x86@...r.kernel.org
> > Signed-off-by: Paul Gortmaker <paul.gortmaker@...driver.com>
> > ---
> >  drivers/platform/x86/intel_turbo_max_3.c | 11 +++++------
> >  1 file changed, 5 insertions(+), 6 deletions(-)
> > 
> > diff --git a/drivers/platform/x86/intel_turbo_max_3.c b/drivers/platform/x86/intel_turbo_max_3.c
> > index 0103f5b32e34..4f60d8e32a0a 100644
> > --- a/drivers/platform/x86/intel_turbo_max_3.c
> > +++ b/drivers/platform/x86/intel_turbo_max_3.c
> > @@ -3,6 +3,8 @@
> >   * Copyright (c) 2017, Intel Corporation.
> >   * All rights reserved.
> >   *
> > + * Author: Srinivas Pandruvada <srinivas.pandruvada@...ux.intel.com>
> > + *
> >   * This program is free software; you can redistribute it and/or modify it
> >   * under the terms and conditions of the GNU General Public License,
> >   * version 2, as published by the Free Software Foundation.
> > @@ -16,7 +18,9 @@
> >  #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
> >  
> >  #include <linux/kernel.h>
> > -#include <linux/module.h>
> > +#include <linux/init.h>
> > +#include <linux/topology.h>
> > +#include <linux/workqueue.h>
> >  #include <linux/cpuhotplug.h>
> >  #include <linux/cpufeature.h>
> >  #include <asm/cpu_device_id.h>
> > @@ -123,7 +127,6 @@ static const struct x86_cpu_id itmt_legacy_cpu_ids[] = {
> >  	ICPU(INTEL_FAM6_BROADWELL_X),
> >  	{}
> >  };
> > -MODULE_DEVICE_TABLE(x86cpu, itmt_legacy_cpu_ids);
> >  
> >  static int __init itmt_legacy_init(void)
> >  {
> > @@ -146,7 +149,3 @@ static int __init itmt_legacy_init(void)
> >  	return 0;
> >  }
> >  late_initcall(itmt_legacy_init)
> > -
> > -MODULE_DESCRIPTION("Intel Turbo Boost Max 3.0 enumeration driver");
> > -MODULE_AUTHOR("Srinivas Pandruvada <srinivas.pandruvada@...ux.intel.com>");
> > -MODULE_LICENSE("GPL v2");
> > -- 
> > 2.11.0
> > 
> > 
> 
> -- 
> Darren Hart
> Intel Open Source Technology Center