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From: "Luis R. Rodriguez" <mcgrof@kernel.org>
To: Cristina Moraru <cristina.moraru09@gmail.com>
Cc: linux-kernel@vger.kernel.org, mcgrof@kernel.org, teg@jklm.no,
	kay@vrfy.org, rusty@rustcorp.com.au, akpm@linux-foundation.org,
	vegard.nossum@gmail.com, Steven Rostedt <rostedt@goodmis.org>,
	backports@vger.kernel.org
Subject: Re: [RFC PATCH 5/5] Add kconf_symb as kernel module attribute
Date: Thu, 18 Aug 2016 21:02:08 +0200
Message-ID: <20160818190208.GL3296@wotan.suse.de> (raw)
In-Reply-To: <1471462023-119645-6-git-send-email-cristina.moraru09@gmail.com>

On Wed, Aug 17, 2016 at 09:27:03PM +0200, Cristina Moraru wrote:
> Add kconf_symbol attribute to kernel struct module.

Nice, you can describe here what and how this can be
used by userspace, for instance you can mention how
udevadm might use this, etc.

> This patch is part of a research project within
> Google Summer of Code of porting 'make localmodconfig'
> for backported drivers. The goal is to enable each
> module to expose in /sys its corresponding CONFIG_* option.
> The value of this attribute will be dynamically pegged by
> modpost without requiring extra work from the driver developers.
> Further, this information will be used by a hardware interogation
> tool to extract build information about the existing devices.

You can leave this out.

> Signed-off-by: Cristina Moraru <cristina.moraru09@gmail.com>
> ---
>  include/linux/module.h | 1 +
>  kernel/module.c        | 2 ++
>  2 files changed, 3 insertions(+)
> 
> diff --git a/include/linux/module.h b/include/linux/module.h
> index 3daf2b3..bef5e44 100644
> --- a/include/linux/module.h
> +++ b/include/linux/module.h
> @@ -353,6 +353,7 @@ struct module {
>  	struct module_attribute *modinfo_attrs;
>  	const char *version;
>  	const char *srcversion;
> +	const char *kconfig_symbol;
>  	struct kobject *holders_dir;
>  
>  	/* Exported symbols */
> diff --git a/kernel/module.c b/kernel/module.c
> index 5f71aa6..bb27300 100644
> --- a/kernel/module.c
> +++ b/kernel/module.c
> @@ -757,6 +757,7 @@ static struct module_attribute modinfo_##field = {                    \
>  
>  MODINFO_ATTR(version);
>  MODINFO_ATTR(srcversion);
> +MODINFO_ATTR(kconfig_symbol);
>  
>  static char last_unloaded_module[MODULE_NAME_LEN+1];
>  
> @@ -1229,6 +1230,7 @@ static struct module_attribute *modinfo_attrs[] = {
>  	&module_uevent,
>  	&modinfo_version,
>  	&modinfo_srcversion,
> +	&modinfo_kconfig_symbol,
>  	&modinfo_initstate,
>  	&modinfo_coresize,
>  	&modinfo_initsize,
> -- 

Do we #ifdef over other features that are optional?

  Luis
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Thread overview: 45+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
     [not found] <1471462023-119645-1-git-send-email-cristina.moraru09@gmail.com>
2016-08-18 17:55 ` [RFC PATCH 0/5] Add CONFIG symbol as " Luis R. Rodriguez
2016-08-19  9:07   ` Michal Marek
2016-08-22 19:48     ` Cristina-Gabriela Moraru
2016-08-23 21:32     ` Luis R. Rodriguez
2016-08-24 11:05       ` Michal Marek
2016-08-24 16:33         ` Luis R. Rodriguez
2016-08-24 17:31           ` Naveen Kumar
2016-08-22 19:35   ` Cristina-Gabriela Moraru
2016-08-23 19:17     ` Luis R. Rodriguez
2016-08-25  7:43   ` Christoph Hellwig
2016-08-25  8:00     ` Johannes Berg
2016-08-25 19:51       ` Luis R. Rodriguez
2016-08-25  8:41     ` Michal Marek
2016-08-25 20:19     ` Luis R. Rodriguez
2019-02-05 22:07       ` Luis Chamberlain
2019-06-26 22:21         ` Luis Chamberlain
2019-06-27  4:50           ` Christoph Hellwig
2019-06-28 18:40             ` Luis Chamberlain
2019-06-29  8:42               ` Greg Kroah-Hartman
2019-07-02 20:51                 ` Luis Chamberlain
2019-07-03  7:40                   ` Greg Kroah-Hartman
2019-07-03 16:50                     ` Luis Chamberlain
2019-07-03 18:57                       ` Greg Kroah-Hartman
2019-07-03 22:25                         ` Luis Chamberlain
2019-07-11 23:07                           ` Brendan Higgins
2019-07-11 23:22                             ` Luis Chamberlain
2019-07-03 12:16               ` Enrico Weigelt, metux IT consult
2019-07-03 17:35                 ` Luis Chamberlain
2019-07-03 19:31                   ` Enrico Weigelt, metux IT consult
2019-07-03 22:42                     ` Luis Chamberlain
2019-07-11 23:27                       ` Brendan Higgins
2019-07-13 14:44                         ` Enrico Weigelt, metux IT consult
     [not found] ` <1471462023-119645-3-git-send-email-cristina.moraru09@gmail.com>
2016-08-18 18:10   ` [RFC PATCH 2/5] Add CONFIG symbol to module as compilation parameter Luis R. Rodriguez
2016-08-18 18:55     ` Luis R. Rodriguez
2016-08-20 15:11     ` Cristina-Gabriela Moraru
2016-08-23 19:07       ` Luis R. Rodriguez
     [not found] ` <1471462023-119645-2-git-send-email-cristina.moraru09@gmail.com>
2016-08-18 18:22   ` [RFC PATCH 1/5] Add generation of Module.symb in streamline_config Luis R. Rodriguez
2016-08-18 18:32     ` Luis R. Rodriguez
     [not found]     ` <CAGZ2q2xi9Uy-ye387=mWhy_fOEJBC593Nos7fH027m-_ZdoOXA@mail.gmail.com>
2016-08-20 14:49       ` Cristina-Gabriela Moraru
2016-08-23 19:00       ` Luis R. Rodriguez
     [not found] ` <1471462023-119645-4-git-send-email-cristina.moraru09@gmail.com>
2016-08-18 18:30   ` [RFC PATCH 3/5] Trigger Module.ksymb generation in Makefile Luis R. Rodriguez
     [not found] ` <1471462023-119645-5-git-send-email-cristina.moraru09@gmail.com>
2016-08-18 18:59   ` [RFC PATCH 4/5] Set KCONFIG_KSYMB as value for kconfig_ksymb module attribute Luis R. Rodriguez
2016-08-20 15:16     ` Cristina-Gabriela Moraru
2016-08-23 19:10       ` Luis R. Rodriguez
     [not found] ` <1471462023-119645-6-git-send-email-cristina.moraru09@gmail.com>
2016-08-18 19:02   ` Luis R. Rodriguez [this message]

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