Linux System Call

Good explanation to know at the basic : System call and Address space

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To add your own system call:

1. Add system call definition in kernel/module.c
2. Declare system call in include/linux/syscalls.h
3. Assign system call number in arch/x86/include/asm/unistd_32.h
4. Add system call in system call table at correct offset from top, arch/x86/kernel/sys_call_table_32.S

Session on:
System call: How does it work and behavior of kernel and user process during system call
Kernel process and thread monitor
bionicC and libC