linux-kernel - Re: [PATCH 00/12] Clang -Wformat warning fixes

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Message-Id: <20220609152527.4ad7862d4126e276e6f76315@linux-foundation.org>
Date:   Thu, 9 Jun 2022 15:25:27 -0700
From:   Andrew Morton <akpm@...ux-foundation.org>
To:     Bill Wendling <morbo@...gle.com>
Cc:     isanbard@...il.com, Tony Luck <tony.luck@...el.com>,
        Borislav Petkov <bp@...en8.de>,
        Thomas Gleixner <tglx@...utronix.de>,
        Ingo Molnar <mingo@...hat.com>,
        Dave Hansen <dave.hansen@...ux.intel.com>, x86@...nel.org,
        "H. Peter Anvin" <hpa@...or.com>,
        Phillip Potter <phil@...lpotter.co.uk>,
        Arnd Bergmann <arnd@...db.de>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        "Rafael J. Wysocki" <rafael.j.wysocki@...el.com>,
        Jan Kara <jack@...e.com>,
        Pablo Neira Ayuso <pablo@...filter.org>,
        Jozsef Kadlecsik <kadlec@...filter.org>,
        Florian Westphal <fw@...len.de>,
        "David S. Miller" <davem@...emloft.net>,
        Eric Dumazet <edumazet@...gle.com>,
        Jakub Kicinski <kuba@...nel.org>,
        Paolo Abeni <pabeni@...hat.com>,
        Jaroslav Kysela <perex@...ex.cz>,
        Takashi Iwai <tiwai@...e.com>,
        Nathan Chancellor <nathan@...nel.org>,
        Nick Desaulniers <ndesaulniers@...gle.com>,
        Tom Rix <trix@...hat.com>,
        Ross Philipson <ross.philipson@...cle.com>,
        Daniel Kiper <daniel.kiper@...cle.com>,
        linux-edac@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-acpi@...r.kernel.org, linux-mm@...ck.org,
        netfilter-devel@...r.kernel.org, coreteam@...filter.org,
        netdev@...r.kernel.org, alsa-devel@...a-project.org,
        llvm@...ts.linux.dev
Subject: Re: [PATCH 00/12] Clang -Wformat warning fixes

On Thu,  9 Jun 2022 22:16:19 +0000 Bill Wendling <morbo@...gle.com> wrote:

> This patch set fixes some clang warnings when -Wformat is enabled.
> 

tldr:

-	printk(msg);
+	printk("%s", msg);

the only reason to make this change is where `msg' could contain a `%'.
Generally, it came from userspace.  Otherwise these changes are a
useless consumer of runtime resources.

I think it would be better to quieten clang in some fashion.