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4f73bc4dd3
The option allows you to remove TTY and compile without errors. This saves space on systems that won't support TTY interfaces anyway. bloat-o-meter output is below. The bulk of this patch consists of Kconfig changes adding "depends on TTY" to various serial devices and similar drivers that require the TTY layer. Ideally, these dependencies would occur on a common intermediate symbol such as SERIO, but most drivers "select SERIO" rather than "depends on SERIO", and "select" does not respect dependencies. bloat-o-meter output comparing our previous minimal to new minimal by removing TTY. The list is filtered to not show removed entries with awk '$3 != "-"' as the list was very long. add/remove: 0/226 grow/shrink: 2/14 up/down: 6/-35356 (-35350) function old new delta chr_dev_init 166 170 +4 allow_signal 80 82 +2 static.__warned 143 142 -1 disallow_signal 63 62 -1 __set_special_pids 95 94 -1 unregister_console 126 121 -5 start_kernel 546 541 -5 register_console 593 588 -5 copy_from_user 45 40 -5 sys_setsid 128 120 -8 sys_vhangup 32 19 -13 do_exit 1543 1526 -17 bitmap_zero 60 40 -20 arch_local_irq_save 137 117 -20 release_task 674 652 -22 static.spin_unlock_irqrestore 308 260 -48 Signed-off-by: Joe Millenbach <jmillenbach@gmail.com> Reviewed-by: Jamey Sharp <jamey@minilop.net> Reviewed-by: Josh Triplett <josh@joshtriplett.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
178 lines
5 KiB
Text
178 lines
5 KiB
Text
comment "S/390 character device drivers"
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depends on S390
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config TN3270
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def_tristate y
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prompt "Support for locally attached 3270 terminals"
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depends on CCW
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help
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Include support for IBM 3270 terminals.
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config TN3270_TTY
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def_tristate y
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prompt "Support for tty input/output on 3270 terminals"
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depends on TN3270 && TTY
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help
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Include support for using an IBM 3270 terminal as a Linux tty.
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config TN3270_FS
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def_tristate m
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prompt "Support for fullscreen applications on 3270 terminals"
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depends on TN3270
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help
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Include support for fullscreen applications on an IBM 3270 terminal.
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config TN3270_CONSOLE
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def_bool y
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prompt "Support for console on 3270 terminal"
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depends on TN3270=y && TN3270_TTY=y
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help
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Include support for using an IBM 3270 terminal as a Linux system
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console. Available only if 3270 support is compiled in statically.
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config TN3215
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def_bool y
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prompt "Support for 3215 line mode terminal"
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depends on CCW && TTY
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help
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Include support for IBM 3215 line-mode terminals.
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config TN3215_CONSOLE
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def_bool y
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prompt "Support for console on 3215 line mode terminal"
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depends on TN3215
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help
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Include support for using an IBM 3215 line-mode terminal as a
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Linux system console.
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config CCW_CONSOLE
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def_bool y if TN3215_CONSOLE || TN3270_CONSOLE
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config SCLP_TTY
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def_bool y
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prompt "Support for SCLP line mode terminal"
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depends on S390 && TTY
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help
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Include support for IBM SCLP line-mode terminals.
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config SCLP_CONSOLE
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def_bool y
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prompt "Support for console on SCLP line mode terminal"
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depends on SCLP_TTY
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help
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Include support for using an IBM HWC line-mode terminal as the Linux
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system console.
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config SCLP_VT220_TTY
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def_bool y
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prompt "Support for SCLP VT220-compatible terminal"
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depends on S390 && TTY
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help
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Include support for an IBM SCLP VT220-compatible terminal.
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config SCLP_VT220_CONSOLE
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def_bool y
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prompt "Support for console on SCLP VT220-compatible terminal"
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depends on SCLP_VT220_TTY
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help
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Include support for using an IBM SCLP VT220-compatible terminal as a
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Linux system console.
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config SCLP_CPI
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def_tristate m
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prompt "Control-Program Identification"
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depends on S390
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help
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This option enables the hardware console interface for system
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identification. This is commonly used for workload management and
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gives you a nice name for the system on the service element.
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Please select this option as a module since built-in operation is
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completely untested.
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You should only select this option if you know what you are doing,
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need this feature and intend to run your kernel in LPAR.
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config SCLP_ASYNC
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def_tristate m
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prompt "Support for Call Home via Asynchronous SCLP Records"
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depends on S390
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help
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This option enables the call home function, which is able to inform
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the service element and connected organisations about a kernel panic.
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You should only select this option if you know what you are doing,
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want for inform other people about your kernel panics,
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need this feature and intend to run your kernel in LPAR.
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config S390_TAPE
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def_tristate m
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prompt "S/390 tape device support"
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depends on CCW
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help
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Select this option if you want to access channel-attached tape
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devices on IBM S/390 or zSeries.
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If you select this option you will also want to select at
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least one of the tape interface options and one of the tape
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hardware options in order to access a tape device.
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This option is also available as a module. The module will be
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called tape390 and include all selected interfaces and
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hardware drivers.
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comment "S/390 tape hardware support"
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depends on S390_TAPE
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config S390_TAPE_34XX
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def_tristate m
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prompt "Support for 3480/3490 tape hardware"
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depends on S390_TAPE
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help
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Select this option if you want to access IBM 3480/3490 magnetic
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tape subsystems and 100% compatibles.
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It is safe to say "Y" here.
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config S390_TAPE_3590
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def_tristate m
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prompt "Support for 3590 tape hardware"
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depends on S390_TAPE
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help
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Select this option if you want to access IBM 3590 magnetic
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tape subsystems and 100% compatibles.
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It is safe to say "Y" here.
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config VMLOGRDR
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def_tristate m
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prompt "Support for the z/VM recording system services (VM only)"
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depends on IUCV
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help
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Select this option if you want to be able to receive records collected
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by the z/VM recording system services, eg. from *LOGREC, *ACCOUNT or
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*SYMPTOM.
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This driver depends on the IUCV support driver.
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config VMCP
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def_bool y
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prompt "Support for the z/VM CP interface"
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depends on S390
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help
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Select this option if you want to be able to interact with the control
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program on z/VM
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config MONREADER
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def_tristate m
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prompt "API for reading z/VM monitor service records"
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depends on IUCV
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help
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Character device driver for reading z/VM monitor service records
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config MONWRITER
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def_tristate m
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prompt "API for writing z/VM monitor service records"
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depends on S390
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help
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Character device driver for writing z/VM monitor service records
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config S390_VMUR
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def_tristate m
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prompt "z/VM unit record device driver"
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depends on S390
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help
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Character device driver for z/VM reader, puncher and printer.
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