063b0a4207
We used to override the copy_user_page() function. However, this is not only inefficient, it also causes additional complexity for highmem support, since we convert from a struct page to a kernel direct mapped address and back to a struct page again. Moreover, with highmem support, we end up pointlessly setting up kmap entries for pages which we're going to remap. So, push the kmapping down into the copypage implementation files where it's required. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
51 lines
1.1 KiB
C
51 lines
1.1 KiB
C
/*
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* linux/arch/arm/mm/proc-syms.c
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*
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* Copyright (C) 2000-2002 Russell King
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation.
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*/
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#include <linux/module.h>
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#include <linux/mm.h>
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#include <asm/cacheflush.h>
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#include <asm/proc-fns.h>
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#include <asm/tlbflush.h>
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#include <asm/page.h>
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#ifndef MULTI_CPU
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EXPORT_SYMBOL(cpu_dcache_clean_area);
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EXPORT_SYMBOL(cpu_set_pte_ext);
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#else
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EXPORT_SYMBOL(processor);
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#endif
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#ifndef MULTI_CACHE
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EXPORT_SYMBOL(__cpuc_flush_kern_all);
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EXPORT_SYMBOL(__cpuc_flush_user_all);
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EXPORT_SYMBOL(__cpuc_flush_user_range);
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EXPORT_SYMBOL(__cpuc_coherent_kern_range);
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#else
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EXPORT_SYMBOL(cpu_cache);
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#endif
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#ifdef CONFIG_MMU
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#ifndef MULTI_USER
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EXPORT_SYMBOL(__cpu_clear_user_page);
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EXPORT_SYMBOL(__cpu_copy_user_highpage);
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#else
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EXPORT_SYMBOL(cpu_user);
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#endif
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#endif
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/*
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* No module should need to touch the TLB (and currently
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* no modules do. We export this for "loadkernel" support
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* (booting a new kernel from within a running kernel.)
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*/
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#ifdef MULTI_TLB
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EXPORT_SYMBOL(cpu_tlb);
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#endif
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