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Merge tag 'amd-drm-next-6.5-2023-06-09' of https://gitlab.freedesktop.org/agd5f/linux...
[J-linux.git] / tools / perf / util / target.h
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
8 struct 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         bool         hybrid;
21         int          initial_delay;
22         const char   *attr_map;
23 };
24
25 enum target_errno {
26         TARGET_ERRNO__SUCCESS           = 0,
27
28         /*
29          * Choose an arbitrary negative big number not to clash with standard
30          * errno since SUS requires the errno has distinct positive values.
31          * See 'Issue 6' in the link below.
32          *
33          * http://pubs.opengroup.org/onlinepubs/9699919799/basedefs/errno.h.html
34          */
35         __TARGET_ERRNO__START           = -10000,
36
37         /* for target__validate() */
38         TARGET_ERRNO__PID_OVERRIDE_CPU  = __TARGET_ERRNO__START,
39         TARGET_ERRNO__PID_OVERRIDE_UID,
40         TARGET_ERRNO__UID_OVERRIDE_CPU,
41         TARGET_ERRNO__PID_OVERRIDE_SYSTEM,
42         TARGET_ERRNO__UID_OVERRIDE_SYSTEM,
43         TARGET_ERRNO__SYSTEM_OVERRIDE_THREAD,
44         TARGET_ERRNO__BPF_OVERRIDE_CPU,
45         TARGET_ERRNO__BPF_OVERRIDE_PID,
46         TARGET_ERRNO__BPF_OVERRIDE_UID,
47         TARGET_ERRNO__BPF_OVERRIDE_THREAD,
48
49         /* for target__parse_uid() */
50         TARGET_ERRNO__INVALID_UID,
51         TARGET_ERRNO__USER_NOT_FOUND,
52
53         __TARGET_ERRNO__END,
54 };
55
56 enum target_errno target__validate(struct target *target);
57 enum target_errno target__parse_uid(struct target *target);
58
59 int target__strerror(struct target *target, int errnum, char *buf, size_t buflen);
60
61 static inline bool target__has_task(struct target *target)
62 {
63         return target->tid || target->pid || target->uid_str;
64 }
65
66 static inline bool target__has_cpu(struct target *target)
67 {
68         return target->system_wide || target->cpu_list;
69 }
70
71 static inline bool target__none(struct target *target)
72 {
73         return !target__has_task(target) && !target__has_cpu(target);
74 }
75
76 static inline bool target__enable_on_exec(struct target *target)
77 {
78         /*
79          * Normally enable_on_exec should be set if:
80          *  1) The tracee process is forked (not attaching to existed task or cpu).
81          *  2) And initial_delay is not configured.
82          * Otherwise, we enable tracee events manually.
83          */
84         return target__none(target) && !target->initial_delay;
85 }
86
87 static inline bool target__has_per_thread(struct target *target)
88 {
89         return target->system_wide && target->per_thread;
90 }
91
92 static inline bool target__uses_dummy_map(struct target *target)
93 {
94         bool use_dummy = false;
95
96         if (target->default_per_cpu)
97                 use_dummy = target->per_thread ? true : false;
98         else if (target__has_task(target) ||
99                  (!target__has_cpu(target) && !target->uses_mmap))
100                 use_dummy = true;
101         else if (target__has_per_thread(target))
102                 use_dummy = true;
103
104         return use_dummy;
105 }
106
107 #endif /* _PERF_TARGET_H */
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