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From: Jesse T <mr.bossman075@gmail.com>
To: Sergey Senozhatsky <senozhatsky@chromium.org>
Cc: Masahiro Yamada <masahiroy@kernel.org>,
	Tomasz Figa <tfiga@chromium.org>,
	linux-kbuild@vger.kernel.org, linux-kernel@vger.kernel.org,
	Randy Dunlap <rdunlap@infradead.org>
Subject: Re: kconfig: list unknown symbols in the old .config
Date: Sat, 19 Aug 2023 15:54:12 -0400	[thread overview]
Message-ID: <CAJFTR8SW=csT9o6iFdaVn7L8P38xYwcf2oU0Qd762=kOtrcs7w@mail.gmail.com> (raw)
In-Reply-To: <20230816124221.GH907732@google.com>

On Sat, Aug 19, 2023 at 3:37 PM Sergey Senozhatsky
<senozhatsky@chromium.org> wrote:
>
> Hi,
>
> We recently were hit (unnecessarily hard) when after kernel uprev we
> figured that something wasn't working. The root cause was a rename of
> the CONFIG_FOO option between kernel releases, which make oldconfig
> doesn't warn/notify about.
>
> Would it be possible to add either a new --listunknown mode to conf or
> to somehow make it conf_warning("unknown symbol: %s\n", line) when it
> reads a line from oldconf that it cannot sym_find()?

This makes sense and I brought up this scenario a couple of days ago
on a recent patch.
I can make a patch for this if needed.

Thanks,
Jesse Taube

>
> That would save a ton of time.

  parent reply	other threads:[~2023-08-20  0:10 UTC|newest]

Thread overview: 4+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2023-08-16 12:42 kconfig: list unknown symbols in the old .config Sergey Senozhatsky
2023-08-16 13:06 ` Sergey Senozhatsky
2023-08-19 19:54 ` Jesse T [this message]
2023-08-20  2:30   ` Sergey Senozhatsky

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