| commit | 58ca33824ff850bee93c850830a7b180486f3371 | |
| author | Vincent Whitchurch <vincent.whitchurch@axis.com> | |
| Wed, 16 Jan 2019 12:31:41 +0000 (16 13:31 +0100) | ||
| committer | Russell King <rmk+kernel@armlinux.org.uk> | |
| Fri, 1 Feb 2019 21:44:11 +0000 (1 21:44 +0000) | ||
| tree | e2c9050c7216042b84321bfede3ac4b22aac2422 | treesnapshot (tar.gz zip) |
| parent | fec9eac6594750ee74c99549f13de3aa9de91b18 | commitdiff |
ARM: 8823/1: Implement pgprot_device()
This is used when mmapping the PCI resource* files in sys. Because ARM
currently lacks an implementation of pgprot_device(), it falls back to
pgprot_uncached() (Strongly Ordered), but we should be able to use
Device memory instead.
Doing this speeds up large writes to the resource files by about 40% on
one of my systems. It also ensures that mmaps on these resources use
the same memory type as ioremap().
Signed-off-by: Vincent Whitchurch <vincent.whitchurch@axis.com>
Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
This is used when mmapping the PCI resource* files in sys. Because ARM
currently lacks an implementation of pgprot_device(), it falls back to
pgprot_uncached() (Strongly Ordered), but we should be able to use
Device memory instead.
Doing this speeds up large writes to the resource files by about 40% on
one of my systems. It also ensures that mmaps on these resources use
the same memory type as ioremap().
Signed-off-by: Vincent Whitchurch <vincent.whitchurch@axis.com>
Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
| arch/arm/include/asm/pgtable.h | diffblobblamehistory |