mirror of https://gitee.com/openkylin/linux.git
[PATCH] uml: enable RAW
Add the RAW device driver options to the UML Kconfig.char file so that you may use them in UML. Signed-off-by: Allan Graves<allan.graves@gmail.com> Signed-off-by: Jeff Dike <jdike@addtoit.com> Cc: Paolo 'Blaisorblade' Giarrusso <blaisorblade@yahoo.it> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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@ -146,6 +146,25 @@ config LEGACY_PTYS
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security. This option enables these legacy devices; on most
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systems, it is safe to say N.
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config RAW_DRIVER
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tristate "RAW driver (/dev/raw/rawN) (OBSOLETE)"
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help
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The raw driver permits block devices to be bound to /dev/raw/rawN.
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Once bound, I/O against /dev/raw/rawN uses efficient zero-copy I/O.
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See the raw(8) manpage for more details.
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The raw driver is deprecated and will be removed soon.
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Applications should simply open the device (eg /dev/hda1)
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with the O_DIRECT flag.
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config MAX_RAW_DEVS
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int "Maximum number of RAW devices to support (1-8192)"
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depends on RAW_DRIVER
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default "256"
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help
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The maximum number of RAW devices that are supported.
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Default is 256. Increase this number in case you need lots of
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raw devices.
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config LEGACY_PTY_COUNT
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int "Maximum number of legacy PTY in use"
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