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um: clean Kconfig up a bit
* kill duplicates with drivers/char/Kconfig * take watchdog one into drivers/watchdog/Kconfig * take mmapper to arch/um/Kconfig.um * rename Kconfig.char menu to "UML Character Devices" Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Richard Weinberger <richard@nod.at>
This commit is contained in:
Al Viro
Richard Weinberger
parent
bad3118fcd
commit
d805a78603
@ -1,5 +1,4 @@
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menu "Character Devices"
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menu "UML Character Devices"
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config STDERR_CONSOLE
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bool "stderr console"
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@ -105,92 +104,6 @@ config SSL_CHAN
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this if you expect the UML that you build to be run in environments
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which don't have a set of /dev/pty* devices.
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config UNIX98_PTYS
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bool "Unix98 PTY support"
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help
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A pseudo terminal (PTY) is a software device consisting of two
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halves: a master and a slave. The slave device behaves identical to
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a physical terminal; the master device is used by a process to
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read data from and write data to the slave, thereby emulating a
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terminal. Typical programs for the master side are telnet servers
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and xterms.
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Linux has traditionally used the BSD-like names /dev/ptyxx for
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masters and /dev/ttyxx for slaves of pseudo terminals. This scheme
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has a number of problems. The GNU C library glibc 2.1 and later,
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however, supports the Unix98 naming standard: in order to acquire a
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pseudo terminal, a process opens /dev/ptmx; the number of the pseudo
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terminal is then made available to the process and the pseudo
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terminal slave can be accessed as /dev/pts/<number>. What was
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traditionally /dev/ttyp2 will then be /dev/pts/2, for example.
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All modern Linux systems use the Unix98 ptys. Say Y unless
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you're on an embedded system and want to conserve memory.
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config LEGACY_PTYS
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bool "Legacy (BSD) PTY support"
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default y
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help
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A pseudo terminal (PTY) is a software device consisting of two
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halves: a master and a slave. The slave device behaves identical to
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a physical terminal; the master device is used by a process to
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read data from and write data to the slave, thereby emulating a
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terminal. Typical programs for the master side are telnet servers
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and xterms.
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Linux has traditionally used the BSD-like names /dev/ptyxx
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for masters and /dev/ttyxx for slaves of pseudo
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terminals. This scheme has a number of problems, including
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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)"
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depends on BLOCK
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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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Applications should preferably 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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depends on LEGACY_PTYS
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default "256"
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help
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The maximum number of legacy PTYs that can be used at any one time.
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The default is 256, and should be more than enough. Embedded
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systems may want to reduce this to save memory.
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When not in use, each legacy PTY occupies 12 bytes on 32-bit
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architectures and 24 bytes on 64-bit architectures.
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config WATCHDOG
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bool "Watchdog Timer Support"
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config WATCHDOG_NOWAYOUT
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bool "Disable watchdog shutdown on close"
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depends on WATCHDOG
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config SOFT_WATCHDOG
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tristate "Software Watchdog"
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depends on WATCHDOG
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config UML_WATCHDOG
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tristate "UML watchdog"
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depends on WATCHDOG
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config UML_SOUND
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tristate "Sound support"
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help
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@ -211,29 +124,4 @@ config HOSTAUDIO
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tristate
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default UML_SOUND
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#It is selected elsewhere, so kconfig would warn without this.
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config HW_RANDOM
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tristate
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default n
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config UML_RANDOM
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tristate "Hardware random number generator"
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help
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This option enables UML's "hardware" random number generator. It
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attaches itself to the host's /dev/random, supplying as much entropy
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as the host has, rather than the small amount the UML gets from its
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own drivers. It registers itself as a standard hardware random number
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generator, major 10, minor 183, and the canonical device name is
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/dev/hwrng.
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The way to make use of this is to install the rng-tools package
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(check your distro, or download from
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http://sourceforge.net/projects/gkernel/). rngd periodically reads
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/dev/hwrng and injects the entropy into /dev/random.
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config MMAPPER
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tristate "iomem emulation driver"
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help
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This driver allows a host file to be used as emulated IO memory inside
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UML.
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endmenu
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@ -148,5 +148,11 @@ config KERNEL_STACK_ORDER
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be 1 << order pages. The default is OK unless you're running Valgrind
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on UML, in which case, set this to 3.
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config MMAPPER
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tristate "iomem emulation driver"
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help
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This driver allows a host file to be used as emulated IO memory inside
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UML.
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config NO_DMA
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def_bool y
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@ -222,3 +222,18 @@ config HW_RANDOM_PPC4XX
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module will be called ppc4xx-rng.
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If unsure, say N.
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config UML_RANDOM
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depends on UML
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tristate "Hardware random number generator"
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help
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This option enables UML's "hardware" random number generator. It
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attaches itself to the host's /dev/random, supplying as much entropy
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as the host has, rather than the small amount the UML gets from its
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own drivers. It registers itself as a standard hardware random number
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generator, major 10, minor 183, and the canonical device name is
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/dev/hwrng.
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The way to make use of this is to install the rng-tools package
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(check your distro, or download from
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http://sourceforge.net/projects/gkernel/). rngd periodically reads
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/dev/hwrng and injects the entropy into /dev/random.
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@ -1174,6 +1174,10 @@ config XEN_WDT
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by Xen 4.0 and newer. The watchdog timeout period is normally one
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minute but can be changed with a boot-time parameter.
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config UML_WATCHDOG
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tristate "UML watchdog"
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depends on UML
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#
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# ISA-based Watchdog Cards
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#
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