lkml.org 
[lkml]   [2020]   [Nov]   [23]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: [PATCH -next] panic: complete the flush of the hard deadlock log messages to the serial port
On Mon, 23 Nov 2020 13:13:59 +0000 Xu Qiang <xuqiang36@huawei.com> wrote:

> when hardlockup_all_cpu_backtrace is on, and there are
> a large number of cores in the system, it takes
> a long time to output the hard deadlock logs of all cores
> to the serial port. When the console_flush_on_panic function
> in panic is executed, console_locked is still held.
> As a result, garbled characters are displayed in the serial port log.
>
> To solve this problem, wait for a maximum of 10s for the serial port
> to be released before console_flush_on_panic.

Wouldn't it be better to wait until all the printing of all those
backtraces has completed?


\
 
 \ /
  Last update: 2020-11-23 20:54    [W:0.043 / U:0.140 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site