On Wednesday 02 July 2008 00:56, Valdis.Kletnieks@xxxxxx wrote: > On Wed, 02 Jul 2008 02:33:48 +0200, Denys Vlasenko said: > > > The purpose of these patches is to make kernel buildable > > with "gcc -ffunction-sections -fdata-sections". > > > > 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. > > Interesting idea. Do you happen to have before-and-after 'size vmlinux' > numbers to show how much space is actually reclaimed? After this patch there will be no change - it does not do dead code and data removal. I submitted bigger change before but it was probably too big for digestion. That earlier version was achieving ~10% kernel size reduction if kernel is built without loadable module support (loadable modules interfere with linker's dead code and data removal, need to add some rather contrived magic to make it work there too. Left as TODO for later). -- vda -- To unsubscribe from this list: send the line "unsubscribe linux-embedded" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
