syscall vs kernel.syscall

[Li Guanglei]

Hi,

  I found some syscall probe names in current syscalls.stp are started
with "kernel.syscall." ,e.g probe kernel.syscall.madvise, although
most syscall probe aliases are started with "syscall.". Are those
syscalls started with "kernel.syscall" omitted during past syscalls
tapsets changes?

  I think it's better if all syscall probes are started with
"syscall." to make the name convention consistent and "probe
syscall.*" can trace all syscalls.

- Guanglei