From: Peter =?iso-8859-1?q?H=FCwe?= <PeterHuewe@gmx.de>
To: linux-kernel@vger.kernel.org, Josh Triplett <josh@joshtriplett.org>
Subject: .exit.text section in vmlinux ?
Date: Tue, 21 Oct 2014 23:19:01 +0200
User-Agent: KMail/1.13.7 (Linux/3.16.2-dirty; KDE/4.12.5; x86_64; ; )
MIME-Version: 1.0
Content-Type: text/plain;
  charset="us-ascii"
Content-Transfer-Encoding: 7bit
Message-Id: <201410212319.20340.PeterHuewe@gmx.de>
Sender: linux-kernel-owner@vger.kernel.org

Hi,

as far as I remember everything marked with __exit or __exit_data will only be 
used/called when unloading a module, and gets moved to the .exit.text or 
.exit.data sections.

Why are these sections present in the vmlinux/vmlinux.bin/bzImage and not 
dropped by the linker or at least objdump? 
This code will never be called for everything compiled in - in an allyesconfig 
build these sections account for ~80kb of code.

Is there something I'm missing here, or can we add "--remove-section 
.exit.data --remove-section .exit.text" to the OBJCOPYFLAGS for vmlinux?


Thanks,
Peter
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/