This patch documents global variables exported from vmlinux.lds. 1) Add comments about usage guidelines for global variables exported from vmlinux.lds.S. 2) Remove unused __initdata_begin[] and __initdata_end[].
Signed-off-by: Jiang Liu <jiang....@huawei.com> Cc: Arnd Bergmann <a...@arndb.de> Cc: linux-a...@vger.kernel.org Cc: linux-kernel@vger.kernel.org --- include/asm-generic/sections.h | 21 ++++++++++++++++++++- 1 file changed, 20 insertions(+), 1 deletion(-) diff --git a/include/asm-generic/sections.h b/include/asm-generic/sections.h index c1a1216..f1a24b5 100644 --- a/include/asm-generic/sections.h +++ b/include/asm-generic/sections.h @@ -3,6 +3,26 @@ /* References to section boundaries */ +/* + * Usage guidelines: + * _text, _data: architecture specific, don't use them in arch-independent code + * [_stext, _etext]: contains .text.* sections, may also contain .rodata.* + * and/or .init.* sections + * [_sdata, _edata]: contains .data.* sections, may also contain .rodata.* + * and/or .init.* sections. + * [__start_rodata, __end_rodata]: contains .rodata.* sections + * [__init_begin, __init_end]: contains .init.* sections, but .init.text.* + * may be out of this range on some architectures. + * [_sinittext, _einittext]: contains .init.text.* sections + * [__bss_start, __bss_stop]: contains BSS sections + * + * Following global variables are optional and may be unavailable on some + * architectures and/or kernel configurations. + * _text, _data + * __kprobes_text_start, __kprobes_text_end + * __entry_text_start, __entry_text_end + * __ctors_start, __ctors_end + */ extern char _text[], _stext[], _etext[]; extern char _data[], _sdata[], _edata[]; extern char __bss_start[], __bss_stop[]; @@ -12,7 +32,6 @@ extern char _end[]; extern char __per_cpu_load[], __per_cpu_start[], __per_cpu_end[]; extern char __kprobes_text_start[], __kprobes_text_end[]; extern char __entry_text_start[], __entry_text_end[]; -extern char __initdata_begin[], __initdata_end[]; extern char __start_rodata[], __end_rodata[]; /* Start and end of .ctors section - used for constructor calls. */ -- 1.7.9.5 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
