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authorBryan O'Sullivan <bos@pathscale.com>2006-02-01 03:05:16 -0800
committerLinus Torvalds <torvalds@g5.osdl.org>2006-02-01 08:53:13 -0800
commitc27a0d75b33c030965cc97d3d7f571107a673fb4 (patch)
treec4d797b413bb6f8a1b8507213294a291ab5114f8 /lib/prio_tree.c
parentf7589f28d7dd4586b4e90ac3b2a180409669053a (diff)
[PATCH] Introduce __iowrite32_copy
This arch-independent routine copies data to a memory-mapped I/O region, using 32-bit accesses. The naming is double-underscored to make it clear that it does not guarantee write ordering, nor does it perform a memory barrier afterwards; the kernel doc also explicitly states this. This style of access is required by some devices. This change also introduces include/linux/io.h, at Andrew's suggestion. It only has one occupant at the moment, but is a logical destination for oft-replicated contents of include/asm-*/{io,iomap}.h to migrate to. Signed-off-by: Bryan O'Sullivan <bos@pathscale.com> Cc: Andi Kleen <ak@muc.de> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'lib/prio_tree.c')
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