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 */ 95