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 uid_t uid;
14 bool system_wide;
15 bool uses_mmap;
16 bool default_per_cpu;
17 bool per_thread;
18 };
19
20 enum target_errno {
21 TARGET_ERRNO__SUCCESS = 0,
22
23 /*
24 * Choose an arbitrary negative big number not to clash with standard
25 * errno since SUS requires the errno has distinct positive values.
26 * See 'Issue 6' in the link below.
27 *
28 * http://pubs.opengroup.org/onlinepubs/9699919799/basedefs/errno.h.html
29 */
30 __TARGET_ERRNO__START = -10000,
31
32 /* for target__validate() */
33 TARGET_ERRNO__PID_OVERRIDE_CPU = __TARGET_ERRNO__START,
34 TARGET_ERRNO__PID_OVERRIDE_UID,
35 TARGET_ERRNO__UID_OVERRIDE_CPU,
36 TARGET_ERRNO__PID_OVERRIDE_SYSTEM,
37 TARGET_ERRNO__UID_OVERRIDE_SYSTEM,
38 TARGET_ERRNO__SYSTEM_OVERRIDE_THREAD,
39
40 /* for target__parse_uid() */
41 TARGET_ERRNO__INVALID_UID,
42 TARGET_ERRNO__USER_NOT_FOUND,
43
44 __TARGET_ERRNO__END,
45 };
46
47 enum target_errno target__validate(struct target *target);
48 enum target_errno target__parse_uid(struct target *target);
49
50 int target__strerror(struct target *target, int errnum, char *buf, size_t buflen);
51
target__has_task(struct target * target)52 static inline bool target__has_task(struct target *target)
53 {
54 return target->tid || target->pid || target->uid_str;
55 }
56
target__has_cpu(struct target * target)57 static inline bool target__has_cpu(struct target *target)
58 {
59 return target->system_wide || target->cpu_list;
60 }
61
target__none(struct target * target)62 static inline bool target__none(struct target *target)
63 {
64 return !target__has_task(target) && !target__has_cpu(target);
65 }
66
target__has_per_thread(struct target * target)67 static inline bool target__has_per_thread(struct target *target)
68 {
69 return target->system_wide && target->per_thread;
70 }
71
target__uses_dummy_map(struct target * target)72 static inline bool target__uses_dummy_map(struct target *target)
73 {
74 bool use_dummy = false;
75
76 if (target->default_per_cpu)
77 use_dummy = target->per_thread ? true : false;
78 else if (target__has_task(target) ||
79 (!target__has_cpu(target) && !target->uses_mmap))
80 use_dummy = true;
81 else if (target__has_per_thread(target))
82 use_dummy = true;
83
84 return use_dummy;
85 }
86
87 #endif /* _PERF_TARGET_H */
88
