Messages in this thread | | | From | Denys Vlasenko <> | Subject | [PATCH 1/4] build system: section garbage collection for vmlinux | Date | Tue, 11 Sep 2007 21:07:53 +0100 |
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This patch is needed for --gc-sections to work, regardless of which final form that support will have.
This patch renames .text.xxx and .data.xxx sections into .xxx.text and .xxx.data, respectively.
.bss.page_aligned (the only .bss.xxx -like section we have) is renamed .bss.k.page_aligned. ".page_aligned.bss" wouldn't work - gcc will assign such section attributes which make it unmergeable with .bss. In fact, binutils ld had a bug and instead of complaining was producing broken vmlinux. The bug is fixed in binutils. Amazingly fast reaction from binutils folks to bug reports! Thanks!
.bss.k.page_aligned is more-or-less ok, since it cannot collide with gcc-produced sections due to second dot in the name. However, should we want to do this in linker script:
.bss : { *(.bss) *(.bss.*) *(.bss.k.page_aligned))
it wouldn't work. But currently we don't need that.
If patch doesn't apply to a newer kernel, you can regenerate it by running linux-2.6.23-rc4.0.fixname.sh in a kernel free and rediffing it against unmodified one.
Please apply.
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com> -- vda [unhandled content-type:application/x-shellscript][unhandled content-type:application/x-bzip2] | |