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1/* SPDX-License-Identifier: GPL-2.0 */
2#ifndef _PERF_TARGET_H
3#define _PERF_TARGET_H
4
5#include <stdbool.h>
6#include <sys/types.h>
7
8struct target {
9 const char *pid;
10 const char *tid;
11 const char *cpu_list;
12 const char *uid_str;
13 const char *bpf_str;
14 uid_t uid;
15 bool system_wide;
16 bool uses_mmap;
17 bool default_per_cpu;
18 bool per_thread;
19 bool use_bpf;
20 int initial_delay;
21 const char *attr_map;
22};
23
24enum target_errno {
25 TARGET_ERRNO__SUCCESS = 0,
26
27 /*
28 * Choose an arbitrary negative big number not to clash with standard
29 * errno since SUS requires the errno has distinct positive values.
30 * See 'Issue 6' in the link below.
31 *
32 * http://pubs.opengroup.org/onlinepubs/9699919799/basedefs/errno.h.html
33 */
34 __TARGET_ERRNO__START = -10000,
35
36 /* for target__validate() */
37 TARGET_ERRNO__PID_OVERRIDE_CPU = __TARGET_ERRNO__START,
38 TARGET_ERRNO__PID_OVERRIDE_UID,
39 TARGET_ERRNO__UID_OVERRIDE_CPU,
40 TARGET_ERRNO__PID_OVERRIDE_SYSTEM,
41 TARGET_ERRNO__UID_OVERRIDE_SYSTEM,
42 TARGET_ERRNO__SYSTEM_OVERRIDE_THREAD,
43 TARGET_ERRNO__BPF_OVERRIDE_CPU,
44 TARGET_ERRNO__BPF_OVERRIDE_PID,
45 TARGET_ERRNO__BPF_OVERRIDE_UID,
46 TARGET_ERRNO__BPF_OVERRIDE_THREAD,
47
48 /* for target__parse_uid() */
49 TARGET_ERRNO__INVALID_UID,
50 TARGET_ERRNO__USER_NOT_FOUND,
51
52 __TARGET_ERRNO__END,
53};
54
55enum target_errno target__validate(struct target *target);
56enum target_errno target__parse_uid(struct target *target);
57
58int target__strerror(struct target *target, int errnum, char *buf, size_t buflen);
59
60static inline bool target__has_task(struct target *target)
61{
62 return target->tid || target->pid || target->uid_str;
63}
64
65static inline bool target__has_cpu(struct target *target)
66{
67 return target->system_wide || target->cpu_list;
68}
69
70static inline bool target__none(struct target *target)
71{
72 return !target__has_task(target) && !target__has_cpu(target);
73}
74
75static inline bool target__enable_on_exec(struct target *target)
76{
77 /*
78 * Normally enable_on_exec should be set if:
79 * 1) The tracee process is forked (not attaching to existed task or cpu).
80 * 2) And initial_delay is not configured.
81 * Otherwise, we enable tracee events manually.
82 */
83 return target__none(target) && !target->initial_delay;
84}
85
86static inline bool target__has_per_thread(struct target *target)
87{
88 return target->system_wide && target->per_thread;
89}
90
91static inline bool target__uses_dummy_map(struct target *target)
92{
93 bool use_dummy = false;
94
95 if (target->default_per_cpu)
96 use_dummy = target->per_thread ? true : false;
97 else if (target__has_task(target) ||
98 (!target__has_cpu(target) && !target->uses_mmap))
99 use_dummy = true;
100 else if (target__has_per_thread(target))
101 use_dummy = true;
102
103 return use_dummy;
104}
105
106#endif /* _PERF_TARGET_H */
1#ifndef _PERF_TARGET_H
2#define _PERF_TARGET_H
3
4#include <stdbool.h>
5#include <sys/types.h>
6
7struct target {
8 const char *pid;
9 const char *tid;
10 const char *cpu_list;
11 const char *uid_str;
12 uid_t uid;
13 bool system_wide;
14 bool uses_mmap;
15 bool default_per_cpu;
16 bool per_thread;
17};
18
19enum target_errno {
20 TARGET_ERRNO__SUCCESS = 0,
21
22 /*
23 * Choose an arbitrary negative big number not to clash with standard
24 * errno since SUS requires the errno has distinct positive values.
25 * See 'Issue 6' in the link below.
26 *
27 * http://pubs.opengroup.org/onlinepubs/9699919799/basedefs/errno.h.html
28 */
29 __TARGET_ERRNO__START = -10000,
30
31 /* for target__validate() */
32 TARGET_ERRNO__PID_OVERRIDE_CPU = __TARGET_ERRNO__START,
33 TARGET_ERRNO__PID_OVERRIDE_UID,
34 TARGET_ERRNO__UID_OVERRIDE_CPU,
35 TARGET_ERRNO__PID_OVERRIDE_SYSTEM,
36 TARGET_ERRNO__UID_OVERRIDE_SYSTEM,
37 TARGET_ERRNO__SYSTEM_OVERRIDE_THREAD,
38
39 /* for target__parse_uid() */
40 TARGET_ERRNO__INVALID_UID,
41 TARGET_ERRNO__USER_NOT_FOUND,
42
43 __TARGET_ERRNO__END,
44};
45
46enum target_errno target__validate(struct target *target);
47enum target_errno target__parse_uid(struct target *target);
48
49int target__strerror(struct target *target, int errnum, char *buf, size_t buflen);
50
51static inline bool target__has_task(struct target *target)
52{
53 return target->tid || target->pid || target->uid_str;
54}
55
56static inline bool target__has_cpu(struct target *target)
57{
58 return target->system_wide || target->cpu_list;
59}
60
61static inline bool target__none(struct target *target)
62{
63 return !target__has_task(target) && !target__has_cpu(target);
64}
65
66static inline bool target__uses_dummy_map(struct target *target)
67{
68 bool use_dummy = false;
69
70 if (target->default_per_cpu)
71 use_dummy = target->per_thread ? true : false;
72 else if (target__has_task(target) ||
73 (!target__has_cpu(target) && !target->uses_mmap))
74 use_dummy = true;
75
76 return use_dummy;
77}
78
79#endif /* _PERF_TARGET_H */