Sysprof Tracer

modulename: trace_sysprof.ko

configname: CONFIG_SYSPROF_TRACER

Linux Kernel Configuration
└─>Tracers
└─>Sysprof Tracer
In linux kernel since version 2.6.27 (release Date: 2008-10-09)  
This tracer provides the trace needed by the 'Sysprof' userspace
tool.

source code:
kernel/trace/trace_sysprof.c