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Mtdblock driver doesn't call flush_dcache_page for pages in request. So,
this causes problems on architectures where the icache doesn't fill from
the dcache or with dcache aliases. The patch fixes this.
The ARCH_IMPLEMENTS_FLUSH_DCACHE_PAGE symbol was introduced to avoid
pointless empty cache-thrashing loops on architectures for which
flush_dcache_page() is a no-op. Every architecture was provided with this
flush pages on architectires where ARCH_IMPLEMENTS_FLUSH_DCACHE_PAGE is
equal 1 or do nothing otherwise.
See "fix mtd_blkdevs problem with caches on some architectures" discussion
on LKML for more information.
Signed-off-by: Ilya Loginov <isloginov@gmail.com>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: David Woodhouse <dwmw2@infradead.org>
Cc: Peter Horton <phorton@bitbox.co.uk>
Cc: "Ed L. Cashin" <ecashin@coraid.com>
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
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Signed-off-by: Tim Abbott <tabbott@ksplice.com>
Acked-by: Sam Ravnborg <sam@ravnborg.org>
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Signed-off-by: Tim Abbott <tabbott@ksplice.com>
Acked-by: Sam Ravnborg <sam@ravnborg.org>
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Some internal definitions of the interrupt controller are
only needed in irq.c, so move them out of the global irq.h
header. Also add proper __iomem annotations for sparse.
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
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Annotate the address space for pointers that are used
correctly with __user and __iomem, so that sparse
can better warn about incorrect casts.
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
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Files that define a global function should #include the
header with its declaration to make sure that the prototypes
do not diverge.
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
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Every system call should be declared, so this adds missing
declarations for the ones we were missing so far.
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
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This really should not be needed. The change for not changing
the IPC code for every new architecture just went into 2.6.31,
so we can skip it now.
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
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modified: arch/score/include/asm/cacheflush.h
modified: arch/score/include/asm/delay.h
modified: arch/score/include/asm/errno.h
modified: arch/score/include/asm/pgtable-bits.h
modified: arch/score/include/asm/pgtable.h
modified: arch/score/include/asm/ptrace.h
modified: arch/score/include/asm/unistd.h
modified: arch/score/kernel/entry.S
modified: arch/score/kernel/process.c
modified: arch/score/kernel/ptrace.c
modified: arch/score/kernel/signal.c
modified: arch/score/kernel/sys_score.c
modified: arch/score/kernel/traps.c
modified: arch/score/mm/cache.c
Signed-off-by: Chen Liqin <liqin.chen@sunplusct.com>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
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This is the complete set of new arch Score's files for linux.
Score instruction set support 16bits, 32bits and 64bits instruction,
Score SOC had been used in game machine and LCD TV.
Signed-off-by: Chen Liqin <liqin.chen@sunplusct.com>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
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Ilya Loginov
Tim Abbott
Chen Liqin
Arnd Bergmann