samples/bpf/offwaketime_kern.c

71 	struct wokeby_t woke;
76 	bpf_get_current_comm(&woke.name, sizeof(woke.name));
77 	woke.ret = bpf_get_stackid(ctx, &stackmap, STACKID_FLAGS);
79 	bpf_map_update_elem(&wokeby, &pid, &woke, BPF_ANY);
85 	struct wokeby_t *woke;
94 	woke = bpf_map_lookup_elem(&wokeby, &pid);
95 	if (woke) {
96 		key.wret = woke->ret;
97 		__builtin_memcpy(&key.waker, woke->name, sizeof(key.waker));