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_restart_tracing(void); 22 int timerlat_bpf_get_hist_value(int key, 23 long long *value_irq, 24 long long *value_thread, 25 long long *value_user, 26 int cpus); 27 int timerlat_bpf_get_summary_value(enum summary_field key, 28 long long *value_irq, 29 long long *value_thread, 30 long long *value_user, 31 int cpus); 32 33 static inline int have_libbpf_support(void) { return 1; } 34 #else 35 static inline int timerlat_bpf_init(struct timerlat_params *params) 36 { 37 return -1; 38 } 39 static inline int timerlat_bpf_attach(void) { return -1; } 40 static inline void timerlat_bpf_detach(void) { }; 41 static inline void timerlat_bpf_destroy(void) { }; 42 static inline int timerlat_bpf_wait(int timeout) { return -1; } 43 static inline int timerlat_bpf_restart_tracing(void) { return -1; }; 44 static inline int timerlat_bpf_get_hist_value(int key, 45 long long *value_irq, 46 long long *value_thread, 47 long long *value_user, 48 int cpus) 49 { 50 return -1; 51 } 52 static inline int timerlat_bpf_get_summary_value(enum summary_field key, 53 long long *value_irq, 54 long long *value_thread, 55 long long *value_user, 56 int cpus) 57 { 58 return -1; 59 } 60 static inline int have_libbpf_support(void) { return 0; } 61 #endif /* HAVE_BPF_SKEL */ 62 #endif /* __bpf__ */ 63