Hi, On Tue, 28 Mar 2017, Zhou Chengming wrote:
> It's reported that the time of insmoding a klp.ko for one of our > out-tree modules is too long. > > ~ time sudo insmod klp.ko > real 0m23.799s > user 0m0.036s > sys 0m21.256s Is this stable through several (>=10) runs? 23 seconds are really suspicious. Yes, there is a linear search through all the kallsyms in kallsyms_on_each_symbol(), but there are something like 70k symbols on my machine (that is, way less than 1M). 23 seconds are somewhat unexpected. If it is a problem, can we fix kallsyms_on_each_symbol() and replace the linear search with something better? All users would benefit... Thanks, Miroslav
