<def f='src/src/sys/external/bsd/drm2/include/linux/ktime.h' l='78' ll='82' type='ktime_t ktime_sub(ktime_t a, ktime_t b)'/>
<use f='src/src/sys/external/bsd/drm2/dist/drm/drm_irq.c' l='686' u='c' c='drm_calc_vbltimestamp_from_scanoutpos'/>
<use f='src/src/sys/external/bsd/drm2/dist/drm/drm_irq.c' l='719' u='c' c='get_drm_timestamp'/>
