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1/* SPDX-License-Identifier: GPL-2.0 */2#ifndef _PERF_TARGET_H3#define _PERF_TARGET_H4 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 int initial_delay;21 const char *attr_map;22};23 24enum target_errno {25 TARGET_ERRNO__SUCCESS = 0,26 27 /*28 * Choose an arbitrary negative big number not to clash with standard29 * errno since SUS requires the errno has distinct positive values.30 * See 'Issue 6' in the link below.31 *32 * http://pubs.opengroup.org/onlinepubs/9699919799/basedefs/errno.h.html33 */34 __TARGET_ERRNO__START = -10000,35 36 /* for target__validate() */37 TARGET_ERRNO__PID_OVERRIDE_CPU = __TARGET_ERRNO__START,38 TARGET_ERRNO__PID_OVERRIDE_UID,39 TARGET_ERRNO__UID_OVERRIDE_CPU,40 TARGET_ERRNO__PID_OVERRIDE_SYSTEM,41 TARGET_ERRNO__UID_OVERRIDE_SYSTEM,42 TARGET_ERRNO__SYSTEM_OVERRIDE_THREAD,43 TARGET_ERRNO__BPF_OVERRIDE_CPU,44 TARGET_ERRNO__BPF_OVERRIDE_PID,45 TARGET_ERRNO__BPF_OVERRIDE_UID,46 TARGET_ERRNO__BPF_OVERRIDE_THREAD,47 48 /* for target__parse_uid() */49 TARGET_ERRNO__INVALID_UID,50 TARGET_ERRNO__USER_NOT_FOUND,51 52 __TARGET_ERRNO__END,53};54 55enum target_errno target__validate(struct target *target);56enum target_errno target__parse_uid(struct target *target);57 58int target__strerror(struct target *target, int errnum, char *buf, size_t buflen);59 60static inline bool target__has_task(struct target *target)61{62 return target->tid || target->pid || target->uid_str;63}64 65static inline bool target__has_cpu(struct target *target)66{67 return target->system_wide || target->cpu_list;68}69 70static inline bool target__none(struct target *target)71{72 return !target__has_task(target) && !target__has_cpu(target);73}74 75static inline bool target__enable_on_exec(struct target *target)76{77 /*78 * Normally enable_on_exec should be set if:79 * 1) The tracee process is forked (not attaching to existed task or cpu).80 * 2) And initial_delay is not configured.81 * Otherwise, we enable tracee events manually.82 */83 return target__none(target) && !target->initial_delay;84}85 86static inline bool target__has_per_thread(struct target *target)87{88 return target->system_wide && target->per_thread;89}90 91static inline bool target__uses_dummy_map(struct target *target)92{93 bool use_dummy = false;94 95 if (target->default_per_cpu)96 use_dummy = target->per_thread ? true : false;97 else if (target__has_task(target) ||98 (!target__has_cpu(target) && !target->uses_mmap))99 use_dummy = true;100 else if (target__has_per_thread(target))101 use_dummy = true;102 103 return use_dummy;104}105 106#endif /* _PERF_TARGET_H */107