linux-kernel - Re: [PATCH] kbuild: Fix optimization level choice default

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Date:   Wed, 4 Oct 2017 09:27:19 +0200
From:   Arnd Bergmann <arnd@...db.de>
To:     Ulf Magnusson <ulfalizer@...il.com>
Cc:     Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        Linux Kbuild mailing list <linux-kbuild@...r.kernel.org>,
        "Paul E. McKenney" <paulmck@...ux.vnet.ibm.com>,
        Nicolas Pitre <nicolas.pitre@...aro.org>,
        Andrew Morton <akpm@...ux-foundation.org>,
        Tejun Heo <tj@...nel.org>,
        Thomas Gleixner <tglx@...utronix.de>,
        Kees Cook <keescook@...omium.org>,
        Daniel Mack <daniel@...que.org>
Subject: Re: [PATCH] kbuild: Fix optimization level choice default

On Wed, Oct 4, 2017 at 1:53 AM, Ulf Magnusson <ulfalizer@...il.com> wrote:
> The choice containing the CC_OPTIMIZE_FOR_PERFORMANCE symbol
> accidentally added a "CONFIG_" prefix when trying to make it the
> default, selecting an undefined symbol as the default.
>
> The mistake is harmless here: Since the default symbol is not visible,
> the choice falls back on using the visible symbol as the default
> instead, which is CC_OPTIMIZE_FOR_PERFORMANCE, as intended.
>
> A patch that makes Kconfig print a warning in this case has been
> submitted separately:
> http://www.spinics.net/lists/linux-kbuild/msg15566.html
>
> Signed-off-by: Ulf Magnusson <ulfalizer@...il.com>

Acked-by: Arnd Bergmann <arnd@...db.de>