[LTP] [PATCH v2 1/4] syscall/process_vm_readv02: new testcase

[Caspar Z. <ca...@ca...>]

This testcase is one of the simple CMA syscalls (process_vm_readv,
process_vm_writev) tests originally written by Chris Yeoh
<ye...@au...>. I made some modifications to make it match the code
style in LTP.

Test Assertion and Strategy:

    Fork two children, one child allocates memory and initializes it;
    then the other one calls process_vm_readv and reads from the same
    memory location, it then verifies if process_vm_readv returns
    correct data.

Signed-off-by: Caspar Zhang <ca...@ca...>
Signed-off-by: Jan Stancek <jst...@re...>
---
 testcases/kernel/syscalls/cma/process_vm.h         |  47 ++++++
 testcases/kernel/syscalls/cma/process_vm_readv02.c | 172 +++++++++++++++++++++
 2 files changed, 219 insertions(+)
 create mode 100644 testcases/kernel/syscalls/cma/process_vm_readv02.c