John Ogness 5341b93dea printk: wake waiters for safe and NMI contexts ...

When printk() is called from safe or NMI contexts, it will directly
store the record (vprintk_store()) and then defer the console output.
However, defer_console_output() only causes console printing and does
not wake any waiters of new records.

Wake waiters from defer_console_output() so that they also are aware
of the new records from safe and NMI contexts.

Fixes: 03fc7f9c99c1 ("printk/nmi: Prevent deadlock when accessing the main log buffer in NMI")
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/20220421212250.565456-6-john.ogness@linutronix.de

2022-04-22 21:30:57 +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

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

printk: remove NMI tracking

2021-07-26 15:09:44 +02:00

printk.c

printk: wake waiters for safe and NMI contexts

2022-04-22 21:30:57 +02:00

sysctl.c

printk: Fix incorrect __user type in proc_dointvec_minmax_sysadmin()

2022-02-03 11:27:38 -08:00