John Ogness 100bdef2c1 console: introduce wrappers to read/write console flags ... After switching to SRCU for console list iteration, some readers will begin readings console->flags as a data race. Locklessly reading console->flags provides a consistent value because there is at most one CPU modifying console->flags and that CPU is using only read-modify-write operations. Introduce a wrapper for SRCU iterators to read console flags. Introduce a matching wrapper to write to flags of registered consoles. Writing to flags of registered consoles is synchronized by the console_list_lock. Signed-off-by: John Ogness <john.ogness@linutronix.de> Reviewed-by: Petr Mladek <pmladek@suse.com> Signed-off-by: Petr Mladek <pmladek@suse.com> Link: https://lore.kernel.org/r/20221116162152.193147-13-john.ogness@linutronix.de		2022-12-02 11:25:00 +01:00
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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	printk: avoid -Wsometimes-uninitialized warning	2021-10-04 10:28:43 +02:00
internal.h	Revert "printk: Wait for the global console lock when the system is going down"	2022-06-23 18:41:40 +02:00
Makefile	printk: move printk sysctl to printk/sysctl.c	2022-01-22 08:33:35 +02:00
printk_ringbuffer.c	printk: ringbuffer: Improve prb_next_seq() performance	2022-01-26 16:00:32 +01:00
printk_ringbuffer.h	printk: ringbuffer: Improve prb_next_seq() performance	2022-01-26 16:00:32 +01:00
printk_safe.c	Revert "printk: Wait for the global console lock when the system is going down"	2022-06-23 18:41:40 +02:00
printk.c	console: introduce wrappers to read/write console flags	2022-12-02 11:25:00 +01:00
sysctl.c	printk: Fix incorrect __user type in proc_dointvec_minmax_sysadmin()	2022-02-03 11:27:38 -08:00