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Message-ID: <7359.1157968022@warthog.cambridge.redhat.com> Date: Mon, 11 Sep 2006 10:47:02 +0100 From: David Howells <dhowells@...hat.com> To: Ingo Molnar <mingo@...e.hu> Cc: David Howells <dhowells@...hat.com>, torvalds@...l.org, akpm@...l.org, benh@...nel.crashing.org, linux-kernel@...r.kernel.org, uclinux-dev@...inux.org Subject: Re: [PATCH 2/3] FRV: Permit __do_IRQ() to be dispensed with Ingo Molnar <mingo@...e.hu> wrote: > The real solution would be to use gcc -ffunction-sections plus ld > --gc-sections to automatically get rid of unused global functions, at > link time. It's easy. It's already possible with FRV. Just add the attached patch and enable the new option. However, you also need to compile without debugging code, otherwise it has little effect. I think stabs links bring stuff in or something. David --- diff --git a/arch/frv/Kconfig b/arch/frv/Kconfig index 5e6583a..0dc3730 100644 --- a/arch/frv/Kconfig +++ b/arch/frv/Kconfig @@ -342,6 +342,14 @@ menu "Power management options" source kernel/power/Kconfig endmenu +config GC_SECTIONS + bool "Garbage collect unused functions and data" + default y + help + Tell the compiler to place all functions and variables in their own + sections and then tell the linker to discard any section that aren't + referred to. + endmenu - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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