cachepc-linux

Fork of AMDESE/linux with modifications for CachePC side-channel attack
git clone https://git.sinitax.com/sinitax/cachepc-linux
Log | Files | Refs | README | LICENSE | sfeed.txt

target.h (2390B)

      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	bool	     hybrid;
     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 standard
     29	 * 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.html
     33	 */
     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__has_per_thread(struct target *target)
     76{
     77	return target->system_wide && target->per_thread;
     78}
     79
     80static inline bool target__uses_dummy_map(struct target *target)
     81{
     82	bool use_dummy = false;
     83
     84	if (target->default_per_cpu)
     85		use_dummy = target->per_thread ? true : false;
     86	else if (target__has_task(target) ||
     87	         (!target__has_cpu(target) && !target->uses_mmap))
     88		use_dummy = true;
     89	else if (target__has_per_thread(target))
     90		use_dummy = true;
     91
     92	return use_dummy;
     93}
     94
     95#endif /* _PERF_TARGET_H */