linux/kernel/printk
Thomas Gleixner 9757acd0a7 printk: nbcon: Allow drivers to mark unsafe regions and check state
For the write_atomic callback, the console driver may have unsafe
regions that need to be appropriately marked. Provide functions
that accept the nbcon_write_context struct to allow for the driver
to enter and exit unsafe regions.

Also provide a function for drivers to check if they are still the
owner of the console.

Co-developed-by: John Ogness <john.ogness@linutronix.de>
Signed-off-by: John Ogness <john.ogness@linutronix.de>
Signed-off-by: Thomas Gleixner (Intel) <tglx@linutronix.de>
Reviewed-by: Petr Mladek <pmladek@suse.com>
Signed-off-by: Petr Mladek <pmladek@suse.com>
Link: https://lore.kernel.org/r/20230916192007.608398-9-john.ogness@linutronix.de
2023-09-18 17:03:46 +02:00
..
braille.c printk: Replace strncmp() with str_has_prefix() 2019-08-16 09:54:08 +02:00
braille.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
console_cmdline.h printk: Fix preferred console selection with multiple matches 2020-02-18 09:34:42 +01:00
index.c kernel/printk/index.c: fix memory leak with using debugfs_lookup() 2023-02-03 10:42:02 +01:00
internal.h printk: nbcon: Add emit function and callback function for atomic printing 2023-09-18 17:03:45 +02:00
Makefile printk: Add non-BKL (nbcon) console basic infrastructure 2023-09-18 17:03:45 +02:00
nbcon.c printk: nbcon: Allow drivers to mark unsafe regions and check state 2023-09-18 17:03:46 +02:00
printk.c printk: nbcon: Add emit function and callback function for atomic printing 2023-09-18 17:03:45 +02:00
printk_ringbuffer.c printk: ringbuffer: Fix truncating buffer size min_t cast 2023-08-14 13:05:22 +02:00
printk_ringbuffer.h printk: ringbuffer: Improve prb_next_seq() performance 2022-01-26 16:00:32 +01:00
printk_safe.c printk: Consolidate console deferred printing 2023-07-20 13:06:22 +02:00
sysctl.c printk: Fix incorrect __user type in proc_dointvec_minmax_sysadmin() 2022-02-03 11:27:38 -08:00