Kernel

1. For centOS
{{{
Ariticle:
ftp://ftp.redhat.com/pub/redhat/linux/enterprise/5Server/en/os/SRPMS/

Downlaod:
ftp://ftp.redhat.com/pub/redhat/linux/enterprise/5Server/en/os/SRPMS/


}}}

2. Reference
{{{
http://www.cs.fsu.edu/~baker/devices/lxr/http/source/linux/arch/x86/kernel/smp_32.c?v=2.6.25#L135

http://hira-consulting.com/wiki/index.php?__send_IPI_shortcut%28%29%2Flinux2.6


}}}