kernels for each update. Just be sure you are only removing the kernels and the old ones.
you can use this,
# yum install yum-utils # package-cleanup --oldkernels
How many kernels does this remove? I like to keep current and one older for a while.
I used only one time and did just that, keep the newest and one older. So only two kernels left after aplying the command, but i am not sure this is going to be the behabior always.
greetings.