Messages in this thread | | | Date | Fri, 29 Oct 2021 12:26:03 +0200 | From | Sebastian Andrzej Siewior <> | Subject | [RFC] printk's sync mode for ftrace_dump() |
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ftrace_dump() is used for instance by alt-sysrq-z / sysrq_ftrace_dump(). The function itself dumps the whole trace buffer in an irq-off section so no need to talk about max latencies unless this is going to change.
The output on the serial is more or less brief and starts with "** 397774 printk messages dropped **" and so I do see only the end of it. Might be okay. Any reason not to use the sync mode + atomic console while ftrace_dump() is in progress?
Sebastian
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