Thomas Gleixner 06653d57ff printk: nbcon: Add emit function and callback function for atomic printing ... Implement an emit function for nbcon consoles to output printk messages. It utilizes the lockless printk_get_next_message() and console_prepend_dropped() functions to retrieve/build the output message. The emit function includes the required safety points to check for handover/takeover and calls a new write_atomic callback of the console driver to output the message. It also includes proper handling for updating the nbcon console sequence number. A new nbcon_write_context struct is introduced. This is provided to the write_atomic callback and includes only the information necessary for performing atomic writes. 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/20230916192007.608398-8-john.ogness@linutronix.de		2023-09-18 17:03:45 +02:00
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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: 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
printk.c	printk: nbcon: Add emit function and callback function for atomic printing	2023-09-18 17:03:45 +02:00
sysctl.c	printk: Fix incorrect __user type in proc_dointvec_minmax_sysadmin()	2022-02-03 11:27:38 -08:00