Messages in this thread | | | Date | Mon, 23 Nov 2020 11:52:35 -0800 | From | Andrew Morton <> | Subject | Re: [PATCH -next] panic: complete the flush of the hard deadlock log messages to the serial port |
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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?
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