netdev - Re: [PATCH 4.19 5/6] ARM: 8788/1: ftrace: remove old mcount support

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Message-ID: <YcBhqJMLdwieZa8X@kroah.com>
Date:   Mon, 20 Dec 2021 11:57:44 +0100
From:   Greg KH <greg@...ah.com>
To:     Anders Roxell <anders.roxell@...aro.org>
Cc:     stable@...r.kernel.org, linux-kernel@...r.kernel.org,
        woojung.huh@...rochip.com, UNGLinuxDriver@...rochip.com,
        davem@...emloft.net, netdev@...r.kernel.org,
        linux-usb@...r.kernel.org, clang-built-linux@...glegroups.com,
        ulli.kroll@...glemail.com, linux@...linux.org.uk,
        linux-arm-kernel@...ts.infradead.org, amitkarwar@...il.com,
        nishants@...vell.com, gbhat@...vell.com, huxinming820@...il.com,
        kvalo@...eaurora.org, linux-wireless@...r.kernel.org,
        rostedt@...dmis.org, mingo@...hat.com, dmitry.torokhov@...il.com,
        ndesaulniers@...gle.com, nathan@...nel.org,
        linux-input@...r.kernel.org, Stefan Agner <stefan@...er.ch>,
        Russell King <rmk+kernel@...linux.org.uk>
Subject: Re: [PATCH 4.19 5/6] ARM: 8788/1: ftrace: remove old mcount support

On Fri, Dec 17, 2021 at 03:41:18PM +0100, Anders Roxell wrote:
> From: Stefan Agner <stefan@...er.ch>
> 
> commit d3c61619568c88d48eccd5e74b4f84faa1440652 upstream.
> 
> Commit cafa0010cd51 ("Raise the minimum required gcc version to 4.6")
> raised the minimum GCC version to 4.6. Old mcount is only required for
> GCC versions older than 4.4.0. Hence old mcount support can be dropped
> too.
> 
> Signed-off-by: Stefan Agner <stefan@...er.ch>
> Signed-off-by: Russell King <rmk+kernel@...linux.org.uk>
> Signed-off-by: Anders Roxell <anders.roxell@...aro.org>

Why is this needed for clang builds in 4.19?