* Laurent Bercot <ska-dietl...@skarnet.org> [11.02.2016 13:27]:
> I wonder if there are better solutions.
just for completeness:
with OpenWrt there is a feature where you have a "protected" area
in RAM which is not lost during reboot and used for having a crashlog
safed over a reboot. ("crashlog.o") see e.g:
https://dev.openwrt.org/browser/trunk/target/linux/generic/patches-4.4/930-crashlog.patch
we have extended this for always keeping a good timestamp over reboot.
ofcourse this does not work with a cold reboot.
bye, bastian
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