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Message-ID: <CAMuHMdV6efvaJuqVjnayyCs2KAbJmi52n0afLS=jh=nKN0y9Ng@mail.gmail.com> Date: Sun, 6 Jul 2025 11:14:43 +0200 From: Geert Uytterhoeven <geert@...ux-m68k.org> To: Daniel Palmer <daniel@...f.com> Cc: linux-m68k@...ts.linux-m68k.org, linux-kernel@...r.kernel.org Subject: Re: [PATCH] m68k: Enable dead code elimination Hi Daniel, On Wed, 16 Apr 2025 at 13:42, Daniel Palmer <daniel@...f.com> wrote: > Allow the experimental dead code elimination config to be enabled. > > For my 68000 nommu config this frees up a few hundred K of memory > so seems worth while. > > Boot and build tested on nommu and mmu enabled configs. > > Before: > Memory: 5388K/8192K available (1986K kernel code, 114K rwdata, > 244K rodata, 92K init, 41K bss, 2624K reserved, 0K cma-reserved) > > After > Memory: 5684K/8192K available (1714K kernel code, 112K rwdata, > 228K rodata, 92K init, 37K bss, 2328K reserved, 0K cma-reserved) > > Signed-off-by: Daniel Palmer <daniel@...f.com> Thanks for your patch! Note that enabling this requires enabling CONFIG_EXPERT first, which is currently enabled in the Coldfire defconfigs, but not in the Classic defconfigs. For atari_defconfig, I see a size reduction of ca. 150 KiB (gcc 13.3.0). Reviewed-by: Geert Uytterhoeven <geert@...ux-m68k.org> i.e. will queue in the m68k tree for v6.17. Gr{oetje,eeting}s, Geert -- Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@...ux-m68k.org In personal conversations with technical people, I call myself a hacker. But when I'm talking to journalists I just say "programmer" or something like that. -- Linus Torvalds
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