ca15ca406f
Patch series "mm: cleanup usage of <asm/pgalloc.h>"
Most architectures have very similar versions of pXd_alloc_one() and
pXd_free_one() for intermediate levels of page table. These patches add
generic versions of these functions in <asm-generic/pgalloc.h> and enable
use of the generic functions where appropriate.
In addition, functions declared and defined in <asm/pgalloc.h> headers are
used mostly by core mm and early mm initialization in arch and there is no
actual reason to have the <asm/pgalloc.h> included all over the place.
The first patch in this series removes unneeded includes of
<asm/pgalloc.h>
In the end it didn't work out as neatly as I hoped and moving
pXd_alloc_track() definitions to <asm-generic/pgalloc.h> would require
unnecessary changes to arches that have custom page table allocations, so
I've decided to move lib/ioremap.c to mm/ and make pgalloc-track.h local
to mm/.
This patch (of 8):
In most cases <asm/pgalloc.h> header is required only for allocations of
page table memory. Most of the .c files that include that header do not
use symbols declared in <asm/pgalloc.h> and do not require that header.
As for the other header files that used to include <asm/pgalloc.h>, it is
possible to move that include into the .c file that actually uses symbols
from <asm/pgalloc.h> and drop the include from the header file.
The process was somewhat automated using
sed -i -E '/[<"]asm\/pgalloc\.h/d' \
$(grep -L -w -f /tmp/xx \
$(git grep -E -l '[<"]asm/pgalloc\.h'))
where /tmp/xx contains all the symbols defined in
arch/*/include/asm/pgalloc.h.
[rppt@linux.ibm.com: fix powerpc warning]
Signed-off-by: Mike Rapoport <rppt@linux.ibm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Reviewed-by: Pekka Enberg <penberg@kernel.org>
Acked-by: Geert Uytterhoeven <geert@linux-m68k.org> [m68k]
Cc: Abdul Haleem <abdhalee@linux.vnet.ibm.com>
Cc: Andy Lutomirski <luto@kernel.org>
Cc: Arnd Bergmann <arnd@arndb.de>
Cc: Christophe Leroy <christophe.leroy@csgroup.eu>
Cc: Joerg Roedel <joro@8bytes.org>
Cc: Max Filippov <jcmvbkbc@gmail.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Satheesh Rajendran <sathnaga@linux.vnet.ibm.com>
Cc: Stafford Horne <shorne@gmail.com>
Cc: Stephen Rothwell <sfr@canb.auug.org.au>
Cc: Steven Rostedt <rostedt@goodmis.org>
Cc: Joerg Roedel <jroedel@suse.de>
Cc: Matthew Wilcox <willy@infradead.org>
Link: http://lkml.kernel.org/r/20200627143453.31835-1-rppt@kernel.org
Link: http://lkml.kernel.org/r/20200627143453.31835-2-rppt@kernel.org
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
132 lines
3 KiB
C
132 lines
3 KiB
C
/*
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* arch/xtensa/kernel/xtensa_ksyms.c
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*
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* Export Xtensa-specific functions for loadable modules.
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*
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* This file is subject to the terms and conditions of the GNU General Public
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* License. See the file "COPYING" in the main directory of this archive
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* for more details.
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*
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* Copyright (C) 2001 - 2005 Tensilica Inc.
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*
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* Joe Taylor <joe@tensilica.com>
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*/
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#include <linux/module.h>
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#include <linux/string.h>
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#include <linux/mm.h>
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#include <linux/interrupt.h>
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#include <asm/irq.h>
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#include <linux/in6.h>
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#include <linux/uaccess.h>
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#include <asm/cacheflush.h>
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#include <asm/checksum.h>
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#include <asm/dma.h>
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#include <asm/io.h>
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#include <asm/page.h>
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#include <asm/ftrace.h>
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#ifdef CONFIG_BLK_DEV_FD
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#include <asm/floppy.h>
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#endif
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#ifdef CONFIG_NET
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#include <net/checksum.h>
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#endif /* CONFIG_NET */
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/*
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* String functions
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*/
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EXPORT_SYMBOL(memset);
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EXPORT_SYMBOL(memcpy);
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EXPORT_SYMBOL(memmove);
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EXPORT_SYMBOL(__memset);
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EXPORT_SYMBOL(__memcpy);
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EXPORT_SYMBOL(__memmove);
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#ifndef CONFIG_GENERIC_STRNCPY_FROM_USER
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EXPORT_SYMBOL(__strncpy_user);
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#endif
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EXPORT_SYMBOL(clear_page);
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EXPORT_SYMBOL(copy_page);
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EXPORT_SYMBOL(empty_zero_page);
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/*
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* gcc internal math functions
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*/
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extern long long __ashrdi3(long long, int);
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extern long long __ashldi3(long long, int);
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extern long long __lshrdi3(long long, int);
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extern int __divsi3(int, int);
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extern int __modsi3(int, int);
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extern long long __muldi3(long long, long long);
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extern int __mulsi3(int, int);
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extern unsigned int __udivsi3(unsigned int, unsigned int);
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extern unsigned int __umodsi3(unsigned int, unsigned int);
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extern unsigned long long __umoddi3(unsigned long long, unsigned long long);
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extern unsigned long long __udivdi3(unsigned long long, unsigned long long);
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extern int __ucmpdi2(int, int);
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EXPORT_SYMBOL(__ashldi3);
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EXPORT_SYMBOL(__ashrdi3);
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EXPORT_SYMBOL(__lshrdi3);
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EXPORT_SYMBOL(__divsi3);
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EXPORT_SYMBOL(__modsi3);
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EXPORT_SYMBOL(__muldi3);
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EXPORT_SYMBOL(__mulsi3);
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EXPORT_SYMBOL(__udivsi3);
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EXPORT_SYMBOL(__umodsi3);
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EXPORT_SYMBOL(__udivdi3);
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EXPORT_SYMBOL(__umoddi3);
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EXPORT_SYMBOL(__ucmpdi2);
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void __xtensa_libgcc_window_spill(void)
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{
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BUG();
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}
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EXPORT_SYMBOL(__xtensa_libgcc_window_spill);
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unsigned int __sync_fetch_and_and_4(volatile void *p, unsigned int v)
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{
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BUG();
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}
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EXPORT_SYMBOL(__sync_fetch_and_and_4);
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unsigned int __sync_fetch_and_or_4(volatile void *p, unsigned int v)
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{
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BUG();
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}
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EXPORT_SYMBOL(__sync_fetch_and_or_4);
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/*
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* Networking support
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*/
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EXPORT_SYMBOL(csum_partial);
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EXPORT_SYMBOL(csum_partial_copy_generic);
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/*
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* Architecture-specific symbols
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*/
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EXPORT_SYMBOL(__xtensa_copy_user);
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EXPORT_SYMBOL(__invalidate_icache_range);
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/*
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* Kernel hacking ...
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*/
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#if defined(CONFIG_VGA_CONSOLE) || defined(CONFIG_DUMMY_CONSOLE)
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// FIXME EXPORT_SYMBOL(screen_info);
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#endif
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extern long common_exception_return;
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EXPORT_SYMBOL(common_exception_return);
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#ifdef CONFIG_FUNCTION_TRACER
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EXPORT_SYMBOL(_mcount);
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#endif
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EXPORT_SYMBOL(__invalidate_dcache_range);
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#if XCHAL_DCACHE_IS_WRITEBACK
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EXPORT_SYMBOL(__flush_dcache_range);
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#endif
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