Some features also contributed by Google back to the Linux kernel, notably the power management feature called wakelock, but was rejected by major programmers because they felt Google was not going to continue maintain their code. Fatherhood Like A Walk In The Park Dinosaurs shirt. Google announced in April 2010 that it would hire two employees to work with the Linux kernel community,  but Greg Kroah-Hartman, who maintains the current Linux kernel of the stable branch, said in December. in 2010 that he was concerned that Google no longer wanted to put his changes into mainstream Linux.  Some of Google’s Android programmers expressed that “Android groups get bored with that process,” because their group doesn’t have many people and there are more urgent things to do with Android.