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Linux kernel mirror (for testing)
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linux
1/* SPDX-License-Identifier: GPL-2.0 */
2#pragma once
3
4enum 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
16int timerlat_bpf_init(struct timerlat_params *params);
17int timerlat_bpf_attach(void);
18void timerlat_bpf_detach(void);
19void timerlat_bpf_destroy(void);
20int timerlat_bpf_wait(int timeout);
21int timerlat_bpf_restart_tracing(void);
22int 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);
27int 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
33static inline int have_libbpf_support(void) { return 1; }
34#else
35static inline int timerlat_bpf_init(struct timerlat_params *params)
36{
37 return -1;
38}
39static inline int timerlat_bpf_attach(void) { return -1; }
40static inline void timerlat_bpf_detach(void) { };
41static inline void timerlat_bpf_destroy(void) { };
42static inline int timerlat_bpf_wait(int timeout) { return -1; }
43static inline int timerlat_bpf_restart_tracing(void) { return -1; };
44static 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}
52static 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}
60static inline int have_libbpf_support(void) { return 0; }
61#endif /* HAVE_BPF_SKEL */
62#endif /* __bpf__ */