From: "Tobin C. Harding" <me@tobin.cc>
To: "Valdis Klētnieks" <valdis.kletnieks@vt.edu>
Cc: Kernelnewbies <kernelnewbies@kernelnewbies.org>,
Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
driverdev-devel@linuxdriverproject.org,
Anatoly Pugachev <matorola@gmail.com>,
Amit Kumar <free.amit.kumar@gmail.com>,
Dan Carpenter <dan.carpenter@oracle.com>
Subject: Re: [OSSNA] Intro to kernel hacking tutorial
Date: Tue, 3 Sep 2019 11:49:42 +1000 [thread overview]
Message-ID: <20190903014942.GA30045@ares> (raw)
In-Reply-To: <490137.1567433334@turing-police>
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On Mon, Sep 02, 2019 at 10:08:54AM -0400, Valdis Klētnieks wrote:
> On Mon, 02 Sep 2019 15:42:19 +0300, Anatoly Pugachev said:
>
> > is it intentionally that you use
> >
> > yes "" | make oldconfig
> >
> > instead of
> >
> > make olddefconfig
>
> They do something different. 'olddefconfig' just takes the platform or
> architecture defconfig and updates it for any new CONFIG_* variables added
> since the last time the defconfig was updated in the tree.
>
> yes "" | make oldconfig does the same updating for new CONFIG_* variables, but
> starts with the most recent .config - which produces wildly different results
> if the .config had previously been minimized by 'make localmodconfig' or other
> similar techniques.
Thanks Valdis, you're the man!
Tobin
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next prev parent reply other threads:[~2019-09-03 1:50 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-07-05 2:50 [OSSNA] Intro to kernel hacking tutorial Tobin C. Harding
2019-07-05 3:32 ` Amit Kumar
2019-07-05 5:10 ` Amit Kumar
2019-07-08 23:46 ` Tobin C. Harding
2019-07-05 7:48 ` loïc tourlonias
2019-07-19 9:36 ` Dan Carpenter
2019-07-22 9:29 ` Tobin C. Harding
2019-09-01 0:00 ` Amit Kumar
2019-09-02 1:51 ` Tobin C. Harding
2019-09-02 6:29 ` Amit Kumar
2019-09-02 12:42 ` Anatoly Pugachev
2019-09-02 14:08 ` Valdis Klētnieks
2019-09-03 1:49 ` Tobin C. Harding [this message]
2019-09-04 9:55 ` Anatoly Pugachev
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