LXR linux/tools/perf/util/probe-file.h

   1/* SPDX-License-Identifier: GPL-2.0 */
   2#ifndef __PROBE_FILE_H
   3#define __PROBE_FILE_H
   4
   5#include "probe-event.h"
   6
   7struct strlist;
   8struct strfilter;
   9
  10/* Cache of probe definitions */
  11struct probe_cache_entry {
  12        struct list_head        node;
  13        bool                    sdt;
  14        struct perf_probe_event pev;
  15        char                    *spev;
  16        struct strlist          *tevlist;
  17};
  18
  19struct probe_cache {
  20        int     fd;
  21        struct list_head entries;
  22};
  23
  24enum probe_type {
  25        PROBE_TYPE_U = 0,
  26        PROBE_TYPE_S,
  27        PROBE_TYPE_X,
  28        PROBE_TYPE_STRING,
  29        PROBE_TYPE_BITFIELD,
  30        PROBE_TYPE_END,
  31};
  32
  33#define PF_FL_UPROBE    1
  34#define PF_FL_RW        2
  35#define for_each_probe_cache_entry(entry, pcache) \
  36        list_for_each_entry(entry, &pcache->entries, node)
  37
  38/* probe-file.c depends on libelf */
  39#ifdef HAVE_LIBELF_SUPPORT
  40int open_trace_file(const char *trace_file, bool readwrite);
  41int probe_file__open(int flag);
  42int probe_file__open_both(int *kfd, int *ufd, int flag);
  43struct strlist *probe_file__get_namelist(int fd);
  44struct strlist *probe_file__get_rawlist(int fd);
  45int probe_file__add_event(int fd, struct probe_trace_event *tev);
  46
  47int probe_file__del_events(int fd, struct strfilter *filter);
  48int probe_file__get_events(int fd, struct strfilter *filter,
  49                                  struct strlist *plist);
  50int probe_file__del_strlist(int fd, struct strlist *namelist);
  51
  52int probe_cache_entry__get_event(struct probe_cache_entry *entry,
  53                                 struct probe_trace_event **tevs);
  54
  55struct probe_cache *probe_cache__new(const char *target, struct nsinfo *nsi);
  56int probe_cache__add_entry(struct probe_cache *pcache,
  57                           struct perf_probe_event *pev,
  58                           struct probe_trace_event *tevs, int ntevs);
  59int probe_cache__scan_sdt(struct probe_cache *pcache, const char *pathname);
  60int probe_cache__commit(struct probe_cache *pcache);
  61void probe_cache__purge(struct probe_cache *pcache);
  62void probe_cache__delete(struct probe_cache *pcache);
  63int probe_cache__filter_purge(struct probe_cache *pcache,
  64                              struct strfilter *filter);
  65struct probe_cache_entry *probe_cache__find(struct probe_cache *pcache,
  66                                            struct perf_probe_event *pev);
  67struct probe_cache_entry *probe_cache__find_by_name(struct probe_cache *pcache,
  68                                        const char *group, const char *event);
  69int probe_cache__show_all_caches(struct strfilter *filter);
  70bool probe_type_is_available(enum probe_type type);
  71bool kretprobe_offset_is_supported(void);
  72bool uprobe_ref_ctr_is_supported(void);
  73bool user_access_is_supported(void);
  74bool multiprobe_event_is_supported(void);
  75bool immediate_value_is_supported(void);
  76#else   /* ! HAVE_LIBELF_SUPPORT */
  77static inline struct probe_cache *probe_cache__new(const char *tgt __maybe_unused, struct nsinfo *nsi __maybe_unused)
  78{
  79        return NULL;
  80}
  81#define probe_cache__delete(pcache) do {} while (0)
  82#endif
  83#endif
  84