From: Randy Dunlap <rdunlap@infradead.org>
To: Ajay Garg <ajaygargnsit@gmail.com>,
linux-kernel@vger.kernel.org, linux-pci@vger.kernel.org
Subject: Re: Recommended way to do kernel-development for static modules
Date: Fri, 1 Oct 2021 21:33:05 -0700 [thread overview]
Message-ID: <a4471053-a4e3-42ac-6177-056bfe371c70@infradead.org> (raw)
In-Reply-To: <CAHP4M8V6b-su=bpM-qMg5pnDKfvh-Ks_3bFfeK7p4hA2RqQw+Q@mail.gmail.com>
On 10/1/21 8:31 PM, Ajay Garg wrote:
> Hello All,
>
> Let's say, I want to make a simple printk change to drivers/pci/bus.c,
> compile it, load it, test it.
>
> Now, since bus.o is built as a result of CONFIG_PCI=y in
> drivers/pci/Makefile, so this module is statically built, and as a
> result doing a "make M=drivers/pci" does-not-pick-up-the-change /
> have-any-effect.
>
> Doing a simple "make" takes too long, everytime for even a trivial change.
>
>
> So, what is the recommended way to do kernel-development for static modules?
>
>
> Will be grateful for pointers.
Just to build drivers/pci/bus.o, you do
$ make drivers/pci/bus.o
That will tell you if you have any build errors/warnings.
For run-time testing, AFAIK you don't have any choice but to
build a full kernel and boot it.
--
~Randy
next prev parent reply other threads:[~2021-10-02 4:33 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-10-02 3:31 Recommended way to do kernel-development for static modules Ajay Garg
2021-10-02 4:33 ` Randy Dunlap [this message]
2021-10-02 4:37 ` Ajay Garg
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