Merge tag 'sched-urgent-2021-05-09' of git://git.kernel.org/pub/scm/linux/kernel...
[linux-2.6-microblaze.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         const char   *attr_map;
21 };
22
23 enum target_errno {
24         TARGET_ERRNO__SUCCESS           = 0,
25
26         /*
27          * Choose an arbitrary negative big number not to clash with standard
28          * errno since SUS requires the errno has distinct positive values.
29          * See 'Issue 6' in the link below.
30          *
31          * http://pubs.opengroup.org/onlinepubs/9699919799/basedefs/errno.h.html
32          */
33         __TARGET_ERRNO__START           = -10000,
34
35         /* for target__validate() */
36         TARGET_ERRNO__PID_OVERRIDE_CPU  = __TARGET_ERRNO__START,
37         TARGET_ERRNO__PID_OVERRIDE_UID,
38         TARGET_ERRNO__UID_OVERRIDE_CPU,
39         TARGET_ERRNO__PID_OVERRIDE_SYSTEM,
40         TARGET_ERRNO__UID_OVERRIDE_SYSTEM,
41         TARGET_ERRNO__SYSTEM_OVERRIDE_THREAD,
42         TARGET_ERRNO__BPF_OVERRIDE_CPU,
43         TARGET_ERRNO__BPF_OVERRIDE_PID,
44         TARGET_ERRNO__BPF_OVERRIDE_UID,
45         TARGET_ERRNO__BPF_OVERRIDE_THREAD,
46
47         /* for target__parse_uid() */
48         TARGET_ERRNO__INVALID_UID,
49         TARGET_ERRNO__USER_NOT_FOUND,
50
51         __TARGET_ERRNO__END,
52 };
53
54 enum target_errno target__validate(struct target *target);
55 enum target_errno target__parse_uid(struct target *target);
56
57 int target__strerror(struct target *target, int errnum, char *buf, size_t buflen);
58
59 static inline bool target__has_task(struct target *target)
60 {
61         return target->tid || target->pid || target->uid_str;
62 }
63
64 static inline bool target__has_cpu(struct target *target)
65 {
66         return target->system_wide || target->cpu_list;
67 }
68
69 static inline bool target__none(struct target *target)
70 {
71         return !target__has_task(target) && !target__has_cpu(target);
72 }
73
74 static inline bool target__has_per_thread(struct target *target)
75 {
76         return target->system_wide && target->per_thread;
77 }
78
79 static inline bool target__uses_dummy_map(struct target *target)
80 {
81         bool use_dummy = false;
82
83         if (target->default_per_cpu)
84                 use_dummy = target->per_thread ? true : false;
85         else if (target__has_task(target) ||
86                  (!target__has_cpu(target) && !target->uses_mmap))
87                 use_dummy = true;
88         else if (target__has_per_thread(target))
89                 use_dummy = true;
90
91         return use_dummy;
92 }
93
94 #endif /* _PERF_TARGET_H */