include/internal/evlist.h

0001 /* SPDX-License-Identifier: GPL-2.0 */
0002 #ifndef __LIBPERF_INTERNAL_EVLIST_H
0003 #define __LIBPERF_INTERNAL_EVLIST_H
0004
0005 #include <linux/list.h>
0006 #include <api/fd/array.h>
0007 #include <internal/cpumap.h>
0008 #include <internal/evsel.h>
0009
0010 #define PERF_EVLIST__HLIST_BITS 8
0011 #define PERF_EVLIST__HLIST_SIZE (1 << PERF_EVLIST__HLIST_BITS)
0012
0013 struct perf_cpu_map;
0014 struct perf_thread_map;
0015 struct perf_mmap_param;
0016
0017 struct perf_evlist {
0018     struct list_head     entries;
0019     int          nr_entries;
0020     int          nr_groups;
0021     bool             has_user_cpus;
0022     /**
0023      * The cpus passed from the command line or all online CPUs by
0024      * default.
0025      */
0026     struct perf_cpu_map *user_requested_cpus;
0027     /** The union of all evsel cpu maps. */
0028     struct perf_cpu_map *all_cpus;
0029     struct perf_thread_map  *threads;
0030     int          nr_mmaps;
0031     size_t           mmap_len;
0032     struct fdarray       pollfd;
0033     struct hlist_head    heads[PERF_EVLIST__HLIST_SIZE];
0034     struct perf_mmap    *mmap;
0035     struct perf_mmap    *mmap_ovw;
0036     struct perf_mmap    *mmap_first;
0037     struct perf_mmap    *mmap_ovw_first;
0038 };
0039
0040 typedef void
0041 (*perf_evlist_mmap__cb_idx_t)(struct perf_evlist*, struct perf_evsel*,
0042                   struct perf_mmap_param*, int);
0043 typedef struct perf_mmap*
0044 (*perf_evlist_mmap__cb_get_t)(struct perf_evlist*, bool, int);
0045 typedef int
0046 (*perf_evlist_mmap__cb_mmap_t)(struct perf_mmap*, struct perf_mmap_param*, int, struct perf_cpu);
0047
0048 struct perf_evlist_mmap_ops {
0049     perf_evlist_mmap__cb_idx_t  idx;
0050     perf_evlist_mmap__cb_get_t  get;
0051     perf_evlist_mmap__cb_mmap_t mmap;
0052 };
0053
0054 int perf_evlist__alloc_pollfd(struct perf_evlist *evlist);
0055 int perf_evlist__add_pollfd(struct perf_evlist *evlist, int fd,
0056                 void *ptr, short revent, enum fdarray_flags flags);
0057
0058 int perf_evlist__mmap_ops(struct perf_evlist *evlist,
0059               struct perf_evlist_mmap_ops *ops,
0060               struct perf_mmap_param *mp);
0061
0062 void perf_evlist__init(struct perf_evlist *evlist);
0063 void perf_evlist__exit(struct perf_evlist *evlist);
0064
0065 /**
0066  * __perf_evlist__for_each_entry - iterate thru all the evsels
0067  * @list: list_head instance to iterate
0068  * @evsel: struct perf_evsel iterator
0069  */
0070 #define __perf_evlist__for_each_entry(list, evsel) \
0071     list_for_each_entry(evsel, list, node)
0072
0073 /**
0074  * evlist__for_each_entry - iterate thru all the evsels
0075  * @evlist: perf_evlist instance to iterate
0076  * @evsel: struct perf_evsel iterator
0077  */
0078 #define perf_evlist__for_each_entry(evlist, evsel) \
0079     __perf_evlist__for_each_entry(&(evlist)->entries, evsel)
0080
0081 /**
0082  * __perf_evlist__for_each_entry_reverse - iterate thru all the evsels in reverse order
0083  * @list: list_head instance to iterate
0084  * @evsel: struct evsel iterator
0085  */
0086 #define __perf_evlist__for_each_entry_reverse(list, evsel) \
0087     list_for_each_entry_reverse(evsel, list, node)
0088
0089 /**
0090  * perf_evlist__for_each_entry_reverse - iterate thru all the evsels in reverse order
0091  * @evlist: evlist instance to iterate
0092  * @evsel: struct evsel iterator
0093  */
0094 #define perf_evlist__for_each_entry_reverse(evlist, evsel) \
0095     __perf_evlist__for_each_entry_reverse(&(evlist)->entries, evsel)
0096
0097 /**
0098  * __perf_evlist__for_each_entry_safe - safely iterate thru all the evsels
0099  * @list: list_head instance to iterate
0100  * @tmp: struct evsel temp iterator
0101  * @evsel: struct evsel iterator
0102  */
0103 #define __perf_evlist__for_each_entry_safe(list, tmp, evsel) \
0104     list_for_each_entry_safe(evsel, tmp, list, node)
0105
0106 /**
0107  * perf_evlist__for_each_entry_safe - safely iterate thru all the evsels
0108  * @evlist: evlist instance to iterate
0109  * @evsel: struct evsel iterator
0110  * @tmp: struct evsel temp iterator
0111  */
0112 #define perf_evlist__for_each_entry_safe(evlist, tmp, evsel) \
0113     __perf_evlist__for_each_entry_safe(&(evlist)->entries, tmp, evsel)
0114
0115 static inline struct perf_evsel *perf_evlist__first(struct perf_evlist *evlist)
0116 {
0117     return list_entry(evlist->entries.next, struct perf_evsel, node);
0118 }
0119
0120 static inline struct perf_evsel *perf_evlist__last(struct perf_evlist *evlist)
0121 {
0122     return list_entry(evlist->entries.prev, struct perf_evsel, node);
0123 }
0124
0125 u64 perf_evlist__read_format(struct perf_evlist *evlist);
0126
0127 void perf_evlist__id_add(struct perf_evlist *evlist,
0128              struct perf_evsel *evsel,
0129              int cpu, int thread, u64 id);
0130
0131 int perf_evlist__id_add_fd(struct perf_evlist *evlist,
0132                struct perf_evsel *evsel,
0133                int cpu, int thread, int fd);
0134
0135 void perf_evlist__reset_id_hash(struct perf_evlist *evlist);
0136
0137 void __perf_evlist__set_leader(struct list_head *list, struct perf_evsel *leader);
0138 #endif /* __LIBPERF_INTERNAL_EVLIST_H */