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| author | Linus Torvalds <torvalds@linux-foundation.org> | 2020-12-16 19:45:11 +0100 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2020-12-16 19:45:11 +0100 |
| commit | d3eb52113d162cc88975fbd03c9e6f9cf2f8a771 (patch) | |
| tree | 7ef2b73e6174d355d625c2a05377b14c0939cca7 /drivers/tty/Kconfig | |
| parent | Merge tag 'fallthrough-fixes-clang-5.11-rc1' of git://git.kernel.org/pub/scm/... (diff) | |
| parent | Merge branch 'for-5.11' into for-linus (diff) | |
| download | linux-d3eb52113d162cc88975fbd03c9e6f9cf2f8a771.tar.xz linux-d3eb52113d162cc88975fbd03c9e6f9cf2f8a771.zip | |
Merge tag 'printk-for-5.11' of git://git.kernel.org/pub/scm/linux/kernel/git/printk/linux
Pull printk updates from Petr Mladek:
- Finally allow parallel writes and reads into/from the lockless
ringbuffer. But it is not a complete solution. Readers are still
serialized against each other. And nested writes are still prevented
by printk_safe per-CPU buffers.
- Use ttynull as the ultimate fallback for /dev/console.
- Officially allow disabling console output by using console="" or
console=null
- A few code cleanups
* tag 'printk-for-5.11' of git://git.kernel.org/pub/scm/linux/kernel/git/printk/linux:
printk: remove logbuf_lock writer-protection of ringbuffer
printk: inline log_output(),log_store() in vprintk_store()
printk: remove obsolete dead assignment
printk/console: Allow to disable console output by using console="" or console=null
init/console: Use ttynull as a fallback when there is no console
printk: ringbuffer: Reference text_data_ring directly in callees.
Diffstat (limited to 'drivers/tty/Kconfig')
| -rw-r--r-- | drivers/tty/Kconfig | 14 |
1 files changed, 0 insertions, 14 deletions
diff --git a/drivers/tty/Kconfig b/drivers/tty/Kconfig index e15cd6b5bb99..47a6e42f0d04 100644 --- a/drivers/tty/Kconfig +++ b/drivers/tty/Kconfig @@ -401,20 +401,6 @@ config MIPS_EJTAG_FDC_KGDB_CHAN help FDC channel number to use for KGDB. -config NULL_TTY - tristate "NULL TTY driver" - help - Say Y here if you want a NULL TTY which simply discards messages. - - This is useful to allow userspace applications which expect a console - device to work without modifications even when no console is - available or desired. - - In order to use this driver, you should redirect the console to this - TTY, or boot the kernel with console=ttynull. - - If unsure, say N. - config TRACE_ROUTER tristate "Trace data router for MIPI P1149.7 cJTAG standard" depends on TRACE_SINK |