Hi Arnd! On 2/25/21 12:14 PM, Arnd Bergmann wrote:
From: Arnd Bergmann <arnd@xxxxxxxx> While experimenting with CONFIG_TRIM_UNUSED_KSYMS across architectures, I noticed that this unsurprisingly works best when combined with the --gc-sections linker flag, which is not currently allowed on m68k. Enabling it with this patch shows significant improvements for kernel size, looking at m68k defconfig with gcc-10, I get 4005135 1374302 167108 5546545 54a231 vmlinux-normal 3916254 1378078 167108 5461440 5355c0 vmlinux+trim 4012933 1362514 164280 5539727 54878f vmlinux+gcsection 3797884 1334194 164640 5296718 50d24e vmlinux+gcsection+trim There are probably bugs somewhere, but if someone is able to test this patch and fix any issues that come up, would be a useful improvement for memory-limited machines.
Thanks, that sounds like a very helpful improvement. I'll test the patch next week when I'm on vacation and report back if it works - unless someone beats me to it ;-). Adrian -- .''`. John Paul Adrian Glaubitz : :' : Debian Developer - glaubitz@xxxxxxxxxx `. `' Freie Universitaet Berlin - glaubitz@xxxxxxxxxxxxxxxxxxx `- GPG: 62FF 8A75 84E0 2956 9546 0006 7426 3B37 F5B5 F913
