Sync File Validation Framework

modulename: sw_sync.ko

configname: CONFIG_SW_SYNC

Linux Kernel Configuration
└─>Device Drivers
└─>DMABUF options
└─>Sync File Validation Framework
In linux kernel since version 3.1 (release Date: 2011-10-24)  
A sync object driver that uses a 32bit counter to coordinate
synchronization. Useful when there is no hardware primitive backing
the synchronization.

WARNING: improper use of this can result in deadlocking kernel
drivers from userspace. Intended for test and debug only.

source code: