CONFIG_RING_BUFFER_ALLOW_SWAP (not configurable)

configname: CONFIG_RING_BUFFER_ALLOW_SWAP

Linux Kernel Configuration
└─>RING_BUFFER_ALLOW_SWAP
In linux kernel since version 2.6.32 (release Date: 2009-12-02)  
Allow the use of ring_buffer_swap_cpu.
Adds a very slight overhead to tracing when enabled.

is depended by
CONFIG_OPROFILE