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Message-Id: <E1Qu81U-00087z-1U@ZenIV.linux.org.uk>
Date: Thu, 18 Aug 2011 20:13:00 +0100
From: Al Viro <viro@....linux.org.uk>
To: richard@....at
Cc: user-mode-linux-devel@...ts.sourceforge.net,
linux-kernel@...r.kernel.org
Subject: Subject: [PATCH 84/91] 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@...iv.linux.org.uk>
---
arch/um/Kconfig.char | 114 +---------------------------------------
arch/um/Kconfig.um | 6 ++
drivers/char/hw_random/Kconfig | 15 +++++
drivers/watchdog/Kconfig | 4 ++
4 files changed, 26 insertions(+), 113 deletions(-)
diff --git a/arch/um/Kconfig.char b/arch/um/Kconfig.char
index 70dabd1..b9d7c42 100644
--- a/arch/um/Kconfig.char
+++ b/arch/um/Kconfig.char
@@ -1,5 +1,4 @@
-
-menu "Character Devices"
+menu "UML Character Devices"
config STDERR_CONSOLE
bool "stderr console"
@@ -105,92 +104,6 @@ config SSL_CHAN
this if you expect the UML that you build to be run in environments
which don't have a set of /dev/pty* devices.
-config UNIX98_PTYS
- bool "Unix98 PTY support"
- help
- A pseudo terminal (PTY) is a software device consisting of two
- halves: a master and a slave. The slave device behaves identical to
- a physical terminal; the master device is used by a process to
- read data from and write data to the slave, thereby emulating a
- terminal. Typical programs for the master side are telnet servers
- and xterms.
-
- Linux has traditionally used the BSD-like names /dev/ptyxx for
- masters and /dev/ttyxx for slaves of pseudo terminals. This scheme
- has a number of problems. The GNU C library glibc 2.1 and later,
- however, supports the Unix98 naming standard: in order to acquire a
- pseudo terminal, a process opens /dev/ptmx; the number of the pseudo
- terminal is then made available to the process and the pseudo
- terminal slave can be accessed as /dev/pts/<number>. What was
- traditionally /dev/ttyp2 will then be /dev/pts/2, for example.
-
- All modern Linux systems use the Unix98 ptys. Say Y unless
- you're on an embedded system and want to conserve memory.
-
-config LEGACY_PTYS
- bool "Legacy (BSD) PTY support"
- default y
- help
- A pseudo terminal (PTY) is a software device consisting of two
- halves: a master and a slave. The slave device behaves identical to
- a physical terminal; the master device is used by a process to
- read data from and write data to the slave, thereby emulating a
- terminal. Typical programs for the master side are telnet servers
- and xterms.
-
- Linux has traditionally used the BSD-like names /dev/ptyxx
- for masters and /dev/ttyxx for slaves of pseudo
- terminals. This scheme has a number of problems, including
- security. This option enables these legacy devices; on most
- systems, it is safe to say N.
-
-config RAW_DRIVER
- tristate "RAW driver (/dev/raw/rawN)"
- depends on BLOCK
- help
- The raw driver permits block devices to be bound to /dev/raw/rawN.
- Once bound, I/O against /dev/raw/rawN uses efficient zero-copy I/O.
- See the raw(8) manpage for more details.
-
- Applications should preferably open the device (eg /dev/hda1)
- with the O_DIRECT flag.
-
-config MAX_RAW_DEVS
- int "Maximum number of RAW devices to support (1-8192)"
- depends on RAW_DRIVER
- default "256"
- help
- The maximum number of RAW devices that are supported.
- Default is 256. Increase this number in case you need lots of
- raw devices.
-
-config LEGACY_PTY_COUNT
- int "Maximum number of legacy PTY in use"
- depends on LEGACY_PTYS
- default "256"
- help
- The maximum number of legacy PTYs that can be used at any one time.
- The default is 256, and should be more than enough. Embedded
- systems may want to reduce this to save memory.
-
- When not in use, each legacy PTY occupies 12 bytes on 32-bit
- architectures and 24 bytes on 64-bit architectures.
-
-config WATCHDOG
- bool "Watchdog Timer Support"
-
-config WATCHDOG_NOWAYOUT
- bool "Disable watchdog shutdown on close"
- depends on WATCHDOG
-
-config SOFT_WATCHDOG
- tristate "Software Watchdog"
- depends on WATCHDOG
-
-config UML_WATCHDOG
- tristate "UML watchdog"
- depends on WATCHDOG
-
config UML_SOUND
tristate "Sound support"
help
@@ -211,29 +124,4 @@ config HOSTAUDIO
tristate
default UML_SOUND
-#It is selected elsewhere, so kconfig would warn without this.
-config HW_RANDOM
- tristate
- default n
-
-config UML_RANDOM
- tristate "Hardware random number generator"
- help
- This option enables UML's "hardware" random number generator. It
- attaches itself to the host's /dev/random, supplying as much entropy
- as the host has, rather than the small amount the UML gets from its
- own drivers. It registers itself as a standard hardware random number
- generator, major 10, minor 183, and the canonical device name is
- /dev/hwrng.
- The way to make use of this is to install the rng-tools package
- (check your distro, or download from
- http://sourceforge.net/projects/gkernel/). rngd periodically reads
- /dev/hwrng and injects the entropy into /dev/random.
-
-config MMAPPER
- tristate "iomem emulation driver"
- help
- This driver allows a host file to be used as emulated IO memory inside
- UML.
-
endmenu
diff --git a/arch/um/Kconfig.um b/arch/um/Kconfig.um
index b5e675e..70fd690 100644
--- a/arch/um/Kconfig.um
+++ b/arch/um/Kconfig.um
@@ -148,5 +148,11 @@ config KERNEL_STACK_ORDER
be 1 << order pages. The default is OK unless you're running Valgrind
on UML, in which case, set this to 3.
+config MMAPPER
+ tristate "iomem emulation driver"
+ help
+ This driver allows a host file to be used as emulated IO memory inside
+ UML.
+
config NO_DMA
def_bool y
diff --git a/drivers/char/hw_random/Kconfig b/drivers/char/hw_random/Kconfig
index 1d2ebc7..e5cd79c 100644
--- a/drivers/char/hw_random/Kconfig
+++ b/drivers/char/hw_random/Kconfig
@@ -222,3 +222,18 @@ config HW_RANDOM_PPC4XX
module will be called ppc4xx-rng.
If unsure, say N.
+
+config UML_RANDOM
+ depends on UML
+ tristate "Hardware random number generator"
+ help
+ This option enables UML's "hardware" random number generator. It
+ attaches itself to the host's /dev/random, supplying as much entropy
+ as the host has, rather than the small amount the UML gets from its
+ own drivers. It registers itself as a standard hardware random number
+ generator, major 10, minor 183, and the canonical device name is
+ /dev/hwrng.
+ The way to make use of this is to install the rng-tools package
+ (check your distro, or download from
+ http://sourceforge.net/projects/gkernel/). rngd periodically reads
+ /dev/hwrng and injects the entropy into /dev/random.
diff --git a/drivers/watchdog/Kconfig b/drivers/watchdog/Kconfig
index be740ce..64c6752 100644
--- a/drivers/watchdog/Kconfig
+++ b/drivers/watchdog/Kconfig
@@ -1174,6 +1174,10 @@ config XEN_WDT
by Xen 4.0 and newer. The watchdog timeout period is normally one
minute but can be changed with a boot-time parameter.
+config UML_WATCHDOG
+ tristate "UML watchdog"
+ depends on UML
+
#
# ISA-based Watchdog Cards
#
--
1.7.2.5
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