Re: Is it possible to implement interrupt time printk's reliably?

[James Simmons]

> So how do printk's work in the very early boot? Is the video card active before
> the kernel probes it's module, or are these very early printk's being queued
> until the video driver is probed?

printk messages are stored in log_buf in printk.c. The console driver just 
reads the buffer and displays what is in the buffer. Look at printk.c 
carefully.

 

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