On Monday 18 April 2016 12:02:35 Vincent ABRIOU wrote:
getrawmonotonic comes from a legacy code so the use is not intentional. Honestly, it is not clear to me the difference between monotonic and rawmonotonic. But in the debug context in which it is used, ktime_get and ktime_get_raw will deliver the same level of information we need. So implementation done by Tina is fine for me.
Ok, cool, thanks for confirming!
FWIW, the best way I can see for illustrating the difference is that rawmonotonic time is for things that should be synchronized with the machines clock generators (e.g. A/V sync), while monotonic time is for the case where you want to synchronize with another machine (or the internet) that may have a slightly different clock generator but uses NTP to correct for that.
In most cases the difference is irrelevant and we tend to use monotonic time by default.
Arnd