1#ifndef _PERF_TARGET_H
 2#define _PERF_TARGET_H
 3
 4#include <stdbool.h>
 5#include <sys/types.h>
 6
 7struct perf_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};
16
17enum perf_target_errno {
18	PERF_ERRNO_TARGET__SUCCESS		= 0,
19
20	/*
21	 * Choose an arbitrary negative big number not to clash with standard
22	 * errno since SUS requires the errno has distinct positive values.
23	 * See 'Issue 6' in the link below.
24	 *
25	 * http://pubs.opengroup.org/onlinepubs/9699919799/basedefs/errno.h.html
26	 */
27	__PERF_ERRNO_TARGET__START		= -10000,
28
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
29
30	/* for perf_target__validate() */
31	PERF_ERRNO_TARGET__PID_OVERRIDE_CPU	= __PERF_ERRNO_TARGET__START,
32	PERF_ERRNO_TARGET__PID_OVERRIDE_UID,
33	PERF_ERRNO_TARGET__UID_OVERRIDE_CPU,
34	PERF_ERRNO_TARGET__PID_OVERRIDE_SYSTEM,
35	PERF_ERRNO_TARGET__UID_OVERRIDE_SYSTEM,
36
37	/* for perf_target__parse_uid() */
38	PERF_ERRNO_TARGET__INVALID_UID,
39	PERF_ERRNO_TARGET__USER_NOT_FOUND,
40
41	__PERF_ERRNO_TARGET__END,
42};
43
44enum perf_target_errno perf_target__validate(struct perf_target *target);
45enum perf_target_errno perf_target__parse_uid(struct perf_target *target);
46
47int perf_target__strerror(struct perf_target *target, int errnum, char *buf,
48			  size_t buflen);
49
50static inline bool perf_target__has_task(struct perf_target *target)
51{
52	return target->tid || target->pid || target->uid_str;
53}
54
55static inline bool perf_target__has_cpu(struct perf_target *target)
56{
57	return target->system_wide || target->cpu_list;
58}
59
60static inline bool perf_target__none(struct perf_target *target)
 
 
 
 
 
61{
62	return !perf_target__has_task(target) && !perf_target__has_cpu(target);
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
63}
64
65#endif /* _PERF_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
 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	const char   *attr_map;
21};
22
23enum 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
54enum target_errno target__validate(struct target *target);
55enum target_errno target__parse_uid(struct target *target);
56
57int target__strerror(struct target *target, int errnum, char *buf, size_t buflen);
 
58
59static inline bool target__has_task(struct target *target)
60{
61	return target->tid || target->pid || target->uid_str;
62}
63
64static inline bool target__has_cpu(struct target *target)
65{
66	return target->system_wide || target->cpu_list;
67}
68
69static inline bool target__none(struct target *target)
70{
71	return !target__has_task(target) && !target__has_cpu(target);
72}
73
74static inline bool target__has_per_thread(struct target *target)
75{
76	return target->system_wide && target->per_thread;
77}
78
79static 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 */