Messages in this thread | | | Date | Wed, 7 Feb 2024 15:12:09 +0100 | From | Petr Mladek <> | Subject | Re: [PATCH v4 0/2] Add support to dump printk buffer to console via sysrq |
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Hi,
first, I am sorry for joining the game so late. I was sick and have had a lot of pending tasks after Christmas's holidays and the sickness.
On Thu 2024-02-01 13:12:39, Sreenath Vijayan wrote: > Hi, > > This patch series enables one to dump the messages in printk ring > buffer unless all CPUs are locked up. This is useful to view the > kernel messages when terminal is unresponsive to enter commands > like dmesg and syslog services are also disabled, especially on > embedded targets.
What is the exact scenario for this feature, please?
IMHO, rewinding the entire log on an unresponsive terminal has a questionable value. Most messages would scroll down quickly and only the last messages would stay visible.
Also this code would rewind all consoles, including (slow) serial ones. I wonder if rewind on these consoles would be useful as well.
That said, I am not completely against this feature. I just want to be sure that it does what you expect.
Best Regards, Petr
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