Extended syslog capabilities in KDL

[pieterpan]

Quite often it is not possible to do serial debugging of the kernel (new laptop, no serial port, etc). At the same time, sometimes the syslog is not saved to the harddrive, while for example AHCI is being worked on.

In those times it would be very useful to see all the debug output that scrolls by so quickly. I have 2 requests: 1) Implement a wait-for-next-page feature (see a diff for ticket 1444) Perhaps this can be set in the kernel driver file, or at the boot menu. 2) Actually store the syslog in a buffer and add a KDL command to scroll back into the syslog. (nicer solution, takes a bit more work)

The need for 2 is actually less if 1 is implemented, but still it would be nice to be able to go back and forth and take pictures of the screen.

[jackburton]

Make debug output wait for ENTER each time screen page is full (from ticket #1444)

[jackburton]

1 is done. 2 should be too, right ?

[axeld]

2. is not implemented - what we have added to the kernel are additional tracing capabilities unrelated to the syslog mechanism. It might still be helpful to have better syslog support in the kernel, especially because the tracing is a compile time option.

Anyway, it's at least not really urgent anymore :-)

[PieterPanman]

I suppose r26684 fixed 2), so this ticket can be closed?

[axeld]

Indeed, thanks for the note!