40a3b8df7b
Normalize global variables exported by vmlinux.lds to conform usage guidelines from include/asm-generic/sections.h. 1) Use _text to mark the start of the kernel image including the head text, and _stext to mark the start of the .text section. 2) Export mandatory global variables __init_begin and __init_end. Signed-off-by: Jiang Liu <jiang.liu@huawei.com> Acked-by: Chris Metcalf <cmetcalf@tilera.com> Cc: Rusty Russell <rusty@rustcorp.com.au> Cc: Bjorn Helgaas <bhelgaas@google.com> Cc: "David S. Miller" <davem@davemloft.net> Cc: Wen Congyang <wency@cn.fujitsu.com> Cc: David Howells <dhowells@redhat.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
45 lines
1.4 KiB
C
45 lines
1.4 KiB
C
/*
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* Copyright 2010 Tilera Corporation. All Rights Reserved.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation, version 2.
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*
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* This program is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, GOOD TITLE or
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* NON INFRINGEMENT. See the GNU General Public License for
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* more details.
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*/
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#ifndef _ASM_TILE_SECTIONS_H
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#define _ASM_TILE_SECTIONS_H
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#define arch_is_kernel_data arch_is_kernel_data
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#include <asm-generic/sections.h>
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/* Text and data are at different areas in the kernel VA space. */
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extern char _sinitdata[], _einitdata[];
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/* Write-once data is writable only till the end of initialization. */
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extern char __w1data_begin[], __w1data_end[];
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/* Not exactly sections, but PC comparison points in the code. */
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extern char __rt_sigreturn[], __rt_sigreturn_end[];
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#ifndef __tilegx__
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extern char sys_cmpxchg[], __sys_cmpxchg_end[];
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extern char __sys_cmpxchg_grab_lock[];
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extern char __start_atomic_asm_code[], __end_atomic_asm_code[];
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#endif
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/* Handle the discontiguity between _sdata and _text. */
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static inline int arch_is_kernel_data(unsigned long addr)
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{
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return addr >= (unsigned long)_sdata &&
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addr < (unsigned long)_end;
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}
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#endif /* _ASM_TILE_SECTIONS_H */
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