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authorNicholas Piggin <npiggin@gmail.com>2018-05-09 23:00:01 +1000
committerMasahiro Yamada <yamada.masahiro@socionext.com>2018-05-17 22:45:01 +0900
commit4c1d9bb0b5d3c0b3468ac8e68a05972eb957630f (patch)
tree7429c088567c6a097c999ac0ee896b4e1e55f545 /scripts/coccinelle
parent5d20ee3192a58750ef8cc24b21aad23a82689be0 (diff)
powerpc: Allow LD_DEAD_CODE_DATA_ELIMINATION to be selected
This requires further changes to linker script to KEEP some tables and wildcard compiler generated sections into the right place. This includes pp32 modifications from Christophe Leroy. When compiling powernv_defconfig with this option, the resulting kernel is almost 400kB smaller (and still boots): text data bss dec filename 11827621 4810490 1341080 17979191 vmlinux 11752437 4598858 1338776 17690071 vmlinux.dcde Mathieu's numbers for custom Mac Mini G4 config has almost 200kB saving. It also had some increase in vmlinux size for as-yet unknown reasons. text data bss dec filename 7461457 2475122 1428064 11364643 vmlinux 7386425 2364370 1425432 11176227 vmlinux.dcde Tested-by: Christophe Leroy <christophe.leroy@c-s.fr> [8xx] Tested-by: Mathieu Malaterre <malat@debian.org> [32-bit powermac] Signed-off-by: Nicholas Piggin <npiggin@gmail.com> Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
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