From: Jeremy Kerr <jk@ozlabs.org>
Date: Fri, 4 Apr 2014 05:05:18 +0000 (+0800)
Subject: log: Allow runtime selection of 'debug' log level
X-Git-Tag: v1.0.0~199
X-Git-Url: http://git.ozlabs.org/?a=commitdiff_plain;h=ae3c354e844698bdb4ed35a6845aa9dca1e9205f;hp=ae3c354e844698bdb4ed35a6845aa9dca1e9205f;p=petitboot

log: Allow runtime selection of 'debug' log level

Currently, we need to compile with -DDEBUG to implement debug-level
logging in the UIs and discover server.

Since we may not be able to easily replace a system's petitboot
binaries, this change introduces a -v|--verbose option to the discver
server and ncurses UI, which enables debug at runtime. We also move some
of the udev debug code out of an #ifdef DEBUG block.

Since petitboot is generally started on boot, we also add a little
infrastructure to pass -v to petitboot on certain system contitions:
either petitboot.debug on the kernel command line, or a petitboot,debug?
NVRAM property containing the value 'true'.

Signed-off-by: Jeremy Kerr <jk@ozlabs.org>
---