26 config RWSEM_GENERIC_SPINLOCK
30 config RWSEM_XCHGADD_ALGORITHM
34 config ARCH_HAS_ILOG2_U32
38 config ARCH_HAS_ILOG2_U64
42 config GENERIC_FIND_NEXT_BIT
46 config GENERIC_HWEIGHT
50 config GENERIC_HARDIRQS
54 config GENERIC_CALIBRATE_DELAY
86 source "kernel/Kconfig.freezer"
88 source "arch/h8300/Kconfig.cpu"
90 menu "Executable file formats"
92 source "fs/Kconfig.binfmt"
98 source "drivers/base/Kconfig"
100 source "drivers/mtd/Kconfig"
102 source "drivers/block/Kconfig"
104 source "drivers/ide/Kconfig"
106 source "arch/h8300/Kconfig.ide"
108 source "drivers/net/Kconfig"
111 # input - input/joystick depends on it. As does USB.
113 source "drivers/input/Kconfig"
115 menu "Character devices"
118 bool "Virtual terminal"
120 If you say Y here, you will get support for terminal devices with
121 display and keyboard devices. These are called "virtual" because you
122 can run several virtual terminals (also called virtual consoles) on
123 one physical terminal. This is rather useful, for example one
124 virtual terminal can collect system messages and warnings, another
125 one can be used for a text-mode user session, and a third could run
126 an X session, all in parallel. Switching between virtual terminals
127 is done with certain key combinations, usually Alt-<function key>.
129 The setterm command ("man setterm") can be used to change the
130 properties (such as colors or beeping) of a virtual terminal. The
131 man page console_codes(4) ("man console_codes") contains the special
132 character sequences that can be used to change those properties
133 directly. The fonts used on virtual terminals can be changed with
134 the setfont ("man setfont") command and the key bindings are defined
135 with the loadkeys ("man loadkeys") command.
137 You need at least one virtual terminal device in order to make use
138 of your keyboard and monitor. Therefore, only people configuring an
139 embedded system would want to say N here in order to save some
140 memory; the only way to log into such a system is then via a serial
141 or network connection.
143 If unsure, say Y, or else you won't be able to do much with your new
144 shiny Linux system :-)
147 bool "Support for console on virtual terminal"
150 The system console is the device which receives all kernel messages
151 and warnings and which allows logins in single user mode. If you
152 answer Y here, a virtual terminal (the device used to interact with
153 a physical terminal) can be used as system console. This is the most
154 common mode of operations, so you should say Y here unless you want
155 the kernel messages be output only to a serial port (in which case
156 you should say Y to "Console on serial port", below).
158 If you do say Y here, by default the currently visible virtual
159 terminal (/dev/tty0) will be used as system console. You can change
160 that with a kernel command line option such as "console=tty3" which
161 would use the third virtual terminal as system console. (Try "man
162 bootparam" or see the documentation of your boot loader (lilo or
163 loadlin) about how to pass options to the kernel at boot time.)
169 depends on VT && !S390 && !UM
172 comment "Unix98 PTY support"
175 bool "Unix98 PTY support"
177 A pseudo terminal (PTY) is a software device consisting of two
178 halves: a master and a slave. The slave device behaves identical to
179 a physical terminal; the master device is used by a process to
180 read data from and write data to the slave, thereby emulating a
181 terminal. Typical programs for the master side are telnet servers
184 Linux has traditionally used the BSD-like names /dev/ptyxx for
185 masters and /dev/ttyxx for slaves of pseudo terminals. This scheme
186 has a number of problems. The GNU C library glibc 2.1 and later,
187 however, supports the Unix98 naming standard: in order to acquire a
188 pseudo terminal, a process opens /dev/ptmx; the number of the pseudo
189 terminal is then made available to the process and the pseudo
190 terminal slave can be accessed as /dev/pts/<number>. What was
191 traditionally /dev/ttyp2 will then be /dev/pts/2, for example.
193 The entries in /dev/pts/ are created on the fly by a virtual
194 file system; therefore, if you say Y here you should say Y to
195 "/dev/pts file system for Unix98 PTYs" as well.
197 If you want to say Y here, you need to have the C library glibc 2.1
198 or later (equal to libc-6.1, check with "ls -l /lib/libc.so.*").
199 Read the instructions in <file:Documentation/Changes> pertaining to
200 pseudo terminals. It's safe to say N.
202 source "drivers/char/pcmcia/Kconfig"
204 source "drivers/serial/Kconfig"
206 source "drivers/i2c/Kconfig"
208 source "drivers/hwmon/Kconfig"
210 source "drivers/usb/Kconfig"
212 source "drivers/uwb/Kconfig"
216 source "drivers/staging/Kconfig"
220 source "arch/h8300/Kconfig.debug"
222 source "security/Kconfig"
224 source "crypto/Kconfig"