kernel_optimize_test/kernel/printk
Petr Mladek f92b070f2d printk: Do not miss new messages when replaying the log
The variable "exclusive_console" is used to reply all existing messages
on a newly registered console. It is cleared when all messages are out.

The problem is that new messages might appear in the meantime. These
are then visible only on the exclusive console.

The obvious solution is to clear "exclusive_console" after we replay
all messages that were already proceed before we started the reply.

Reported-by: Sergey Senozhatsky <sergey.senozhatsky@gmail.com>
Link: http://lkml.kernel.org/r/20180913123406.14378-1-pmladek@suse.com
To: Steven Rostedt <rostedt@goodmis.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Sergey Senozhatsky <sergey.senozhatsky.work@gmail.com>
Cc: linux-kernel@vger.kernel.org
Acked-by: Sergey Senozhatsky <sergey.senozhatsky@gmail.com>
Signed-off-by: Petr Mladek <pmladek@suse.com>
2018-10-02 15:11:40 +02:00
..
braille.c License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
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 License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
internal.h printk/nmi: Prevent deadlock when accessing the main log buffer in NMI 2018-07-09 14:10:40 +02:00
Makefile printk: introduce per-cpu safe_print seq buffer 2017-02-08 11:07:11 +01:00
printk_safe.c printk/tracing: Do not trace printk_nmi_enter() 2018-09-06 11:24:05 -04:00
printk.c printk: Do not miss new messages when replaying the log 2018-10-02 15:11:40 +02:00