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 52 static inline bool target__has_task(struct target *target) 53 { 54 return target->tid || target->pid || target->uid_str; 55 } 56 57 static inline bool target__has_cpu(struct target *target) 58 { 59 return target->system_wide || target->cpu_list; 60 } 61 62 static inline bool target__none(struct target *target) 63 { 64 return !target__has_task(target) && !target__has_cpu(target); 65 } 66 67 static inline bool target__has_per_thread(struct target *target) 68 { 69 return target->system_wide && target->per_thread; 70 } 71 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