On Tue Sep 17, 2019 at 10:32 PM kbuild test robot wrote: > All errors (new ones prefixed by >>): > > kernel/events/core.c: In function 'perf_event_lost': > >> kernel/events/core.c:4753:11: error: implicit declaration of function 'perf_kprobe_missed'; did you mean 'perf_release'? [-Werror=implicit-function-declaration] > lost += perf_kprobe_missed(event); > ^~~~~~~~~~~~~~~~~~ > perf_release > cc1: some warnings being treated as errors > Ah forgot the #ifdef for CONFIG_KPROBE_EVENTS. I've applied the fix and will send it in the next version.