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Message-Id: <1189009748.4442.19.camel@imap.mvista.com> Date: Wed, 05 Sep 2007 09:29:08 -0700 From: Daniel Walker <dwalker@...sta.com> To: Denys Vlasenko <vda.linux@...glemail.com> Cc: sam@...nborg.org, kai@...maschewski.name, linux-kernel@...r.kernel.org Subject: Re: [PATCH 0/3] build system: section garbage collection for vmlinux On Wed, 2007-09-05 at 14:43 +0100, Denys Vlasenko wrote: > Build system: section garbage collection for vmlinux > > > Newer gcc and binutils can do dead code and data removal > at link time. It is achieved using combination of > -ffunction-sections -fdata-sections options for gcc and > --gc-sections for ld. > > Theory of operation: > > Option -ffunction-sections instructs gcc to place each function > (including static ones) in it's own section named .text.function_name > instead of placing all functions in one big .text section. > > At link time, ld normally coalesce all such sections into one > output section .text again. It is achieved by having *(.text.*) spec > along with *(.text) spec in built-in linker scripts. You version doesn't work with CONFIG_MODULES right? Also, why do you need this patch, [PATCH 1/3] build system: section garbage collection for vmlinux Daniel - 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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