1 /* SPDX-License-Identifier: GPL-2.0 */ 2 #pragma once 3 4 enum summary_field { 5 SUMMARY_CURRENT, 6 SUMMARY_MIN, 7 SUMMARY_MAX, 8 SUMMARY_COUNT, 9 SUMMARY_SUM, 10 SUMMARY_OVERFLOW, 11 SUMMARY_FIELD_N 12 }; 13 14 #ifndef __bpf__ 15 #ifdef HAVE_BPF_SKEL 16 int timerlat_bpf_init(struct timerlat_params *params); 17 int timerlat_bpf_attach(void); 18 void timerlat_bpf_detach(void); 19 void timerlat_bpf_destroy(void); 20 int timerlat_bpf_wait(int timeout); 21 int timerlat_bpf_get_hist_value(int key, 22 long long *value_irq, 23 long long *value_thread, 24 long long *value_user, 25 int cpus); 26 int timerlat_bpf_get_summary_value(enum summary_field key, 27 long long *value_irq, 28 long long *value_thread, 29 long long *value_user, 30 int cpus); 31 static inline int have_libbpf_support(void) { return 1; } 32 #else 33 static inline int timerlat_bpf_init(struct timerlat_params *params) 34 { 35 return -1; 36 } 37 static inline int timerlat_bpf_attach(void) { return -1; } 38 static inline void timerlat_bpf_detach(void) { }; 39 static inline void timerlat_bpf_destroy(void) { }; 40 static inline int timerlat_bpf_wait(int timeout) { return -1; } 41 static inline int timerlat_bpf_get_hist_value(int key, 42 long long *value_irq, 43 long long *value_thread, 44 long long *value_user, 45 int cpus) 46 { 47 return -1; 48 } 49 static inline int timerlat_bpf_get_summary_value(enum summary_field key, 50 long long *value_irq, 51 long long *value_thread, 52 long long *value_user, 53 int cpus) 54 { 55 return -1; 56 } 57 static inline int have_libbpf_support(void) { return 0; } 58 #endif /* HAVE_BPF_SKEL */ 59 #endif /* __bpf__ */ 60