What does being all knowing actually mean in the Christian theology?

"And I saw heaven opened, and behold, a white horse, and He who sat on it is called Faithful and True, and in righteousness He judges and wages war. 12 His eyes are a flame of fire, and on His head are many diadems; and He has a name written on Him which no one knows except Himself. 13 He is clothed with a robe dipped in blood, and His name is called The Word of God. 14 And the armies which are in heaven, clothed in fine linen, white and clean, were following Him on white horses. 15 From His mouth comes a sharp sword, so that with it He may strike down the nations, and He will rule them with a rod of iron; and He treads the wine press of the fierce wrath of God, the Almighty. 16 And on His robe and on His thigh He has a name written, “KING OF KINGS, AND LORD OF LORDS.” 
~ Revelation 19:11-16 

So, if Jesus has a name which no one knows but himself, then god the father also does not know it? Well, that is only fair since only god the father knows when Jesus will return. Somehow, an all knowing Jesus was unaware of that bit of information. 

In Matt. 24:35-37 Jesus said,  "Heaven and earth will pass away, but My words shall not pass away.  36"But of that day and hour no one knows, not even the angels of heaven, nor the Son, but the Father alone.  37 For the coming of the Son of Man will be just like the days of Noah."


And here is another passage which shows that Jesus was unaware of something. 


Matthew 27:46
About the ninth hour Jesus cried out in a loud voice, “Eloi, Eloi, lama sabachthani,”—which means, “My God, my God, why have you forsaken me?”

Scripture makes it clear that Jesus' knowledge was limited. Not only did he did not know the timing of His own second coming or why god would forsake him, he did not know how long an epileptic suffered from his condition (Mark 9:21). Neither did He know who it was who touched His garment when healing virtue came forth from Him (Mark 5:30).


It also opens up an interesting question. If Jesus is god and eternal, then how can god the father be "his" god? In what way can Jesus have a god and still be a god himself? 

If there is anything that Jesus does not know, then he is not all knowing. Now many Christians try to claim that Jesus was limited by being human. However, before he was born as a human, he had existed for all eternity as god. It is reasonable to assume that he was all knowing before he was born as a human, since  the Christian concept of god states he is all knowing. If he knew everything before be was born as a human, then he should still have that knowledge.