#include #include void baz (void *cb_data, struct task_struct *parent, struct task_struct *child) { (void) cb_data; (void) parent; (void) child; } /* Until 2.6.35 (commit 38516ab59fbc5b), register_trace_* took one argument. Until 5.7.0 (commit a2806ef77ff9a9), this could be checked by checking for the absence of DECLARE_TRACE_NOARGS. Now _NOARGS variant is removed. */ void bar (void) { register_trace_sched_process_fork(baz, NULL); }