1*5525aebdSTomas Glozar // SPDX-License-Identifier: GPL-2.0 2*5525aebdSTomas Glozar #include <linux/bpf.h> 3*5525aebdSTomas Glozar #include <bpf/bpf_tracing.h> 4*5525aebdSTomas Glozar 5*5525aebdSTomas Glozar char LICENSE[] SEC("license") = "GPL"; 6*5525aebdSTomas Glozar 7*5525aebdSTomas Glozar struct { 8*5525aebdSTomas Glozar __uint(type, BPF_MAP_TYPE_ARRAY); 9*5525aebdSTomas Glozar __uint(max_entries, 1); 10*5525aebdSTomas Glozar __type(key, unsigned int); 11*5525aebdSTomas Glozar __type(value, unsigned long long); 12*5525aebdSTomas Glozar } rtla_test_map SEC(".maps"); 13*5525aebdSTomas Glozar 14*5525aebdSTomas Glozar struct trace_event_raw_timerlat_sample; 15*5525aebdSTomas Glozar 16*5525aebdSTomas Glozar SEC("tp/timerlat_action") 17*5525aebdSTomas Glozar int action_handler(struct trace_event_raw_timerlat_sample *tp_args) 18*5525aebdSTomas Glozar { 19*5525aebdSTomas Glozar unsigned int key = 0; 20*5525aebdSTomas Glozar unsigned long long value = 42; 21*5525aebdSTomas Glozar 22*5525aebdSTomas Glozar bpf_map_update_elem(&rtla_test_map, &key, &value, BPF_ANY); 23*5525aebdSTomas Glozar 24*5525aebdSTomas Glozar return 0; 25*5525aebdSTomas Glozar } 26