CONFIG_TRACE_IRQFLAGS_SUPPORT (not configurable)

configname: CONFIG_TRACE_IRQFLAGS_SUPPORT

Linux Kernel Configuration
└─>General architecture-dependent options
└─>TRACE_IRQFLAGS_SUPPORT
In linux kernel since version 2.6.18 (release Date: 2006-09-19)  
is selected by
CONFIG_IRQSOFF_TRACER