[Crash-utility] [PATCH] Add -r option to timer

[qiaonuohan]

Hello Dave,

The problem is fixed and I changed the display according to your 
suggestion. Please check.

One more thing is about current time. I think current time is needed
when debugging, for debuggers can compare the expires of hrtimers with
current time.

When realizing this functionality, I once tried to use xtime plus
wall_to_monotonic. But then I found the value is not that correct. So I
use uptime here. Since it seems strange, what about changing the
display?

-- 
--
Regards
Qiao Nuohan


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