OpenCloudOS-Kernel/kernel/printk
John Ogness 809631e2bf Revert "printk: wake up all waiters"
This reverts commit 938ba4084a.

The wait queue @log_wait never has exclusive waiters, so there
is no need to use wake_up_interruptible_all(). Using
wake_up_interruptible() was the correct function to wake all
waiters.

Since there are no exclusive waiters, erroneously changing
wake_up_interruptible() to wake_up_interruptible_all() did not
result in any behavior change. However, using
wake_up_interruptible_all() on a wait queue without exclusive
waiters is fundamentally wrong.

Go back to using wake_up_interruptible() to wake all waiters.

Signed-off-by: John Ogness <john.ogness@linutronix.de>
Acked-by: Steven Rostedt (Google) <rostedt@goodmis.org>
Signed-off-by: Petr Mladek <pmladek@suse.com>
Link: https://lore.kernel.org/r/20220526203056.81123-1-john.ogness@linutronix.de
2022-05-27 13:04:46 +02:00
..
Makefile printk: move printk sysctl to printk/sysctl.c 2022-01-22 08:33:35 +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 printk: avoid -Wsometimes-uninitialized warning 2021-10-04 10:28:43 +02:00
internal.h printk: fix build warning when CONFIG_PRINTK=n 2022-01-22 08:33:36 +02:00
printk.c Revert "printk: wake up all waiters" 2022-05-27 13:04:46 +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 printk: remove NMI tracking 2021-07-26 15:09:44 +02:00
sysctl.c printk: Fix incorrect __user type in proc_dointvec_minmax_sysadmin() 2022-02-03 11:27:38 -08:00