1 /* SPDX-License-Identifier: GPL-2.0 */ 1 /* SPDX-License-Identifier: GPL-2.0 */
2 #ifndef __LIBPERF_INTERNAL_EVSEL_H 2 #ifndef __LIBPERF_INTERNAL_EVSEL_H
3 #define __LIBPERF_INTERNAL_EVSEL_H 3 #define __LIBPERF_INTERNAL_EVSEL_H
4 4
5 #include <linux/types.h> 5 #include <linux/types.h>
6 #include <linux/perf_event.h> 6 #include <linux/perf_event.h>
7 #include <stdbool.h> 7 #include <stdbool.h>
8 #include <sys/types.h> 8 #include <sys/types.h>
9 #include <internal/cpumap.h> 9 #include <internal/cpumap.h>
10 10
11 struct perf_thread_map; 11 struct perf_thread_map;
12 struct xyarray; 12 struct xyarray;
13 13
14 /* 14 /*
15 * Per fd, to map back from PERF_SAMPLE_ID to 15 * Per fd, to map back from PERF_SAMPLE_ID to evsel, only used when there are
16 * more than one entry in the evlist. 16 * more than one entry in the evlist.
17 */ 17 */
18 struct perf_sample_id { 18 struct perf_sample_id {
19 struct hlist_node node; 19 struct hlist_node node;
20 u64 id; 20 u64 id;
21 struct perf_evsel *evsel; 21 struct perf_evsel *evsel;
22 /* 22 /*
23 * 'idx' will be used for AUX area samp 23 * 'idx' will be used for AUX area sampling. A sample will have AUX area
24 * data that will be queued for decodin 24 * data that will be queued for decoding, where there are separate
25 * queues for each CPU (per-cpu tracing 25 * queues for each CPU (per-cpu tracing) or task (per-thread tracing).
26 * The sample ID can be used to lookup 26 * The sample ID can be used to lookup 'idx' which is effectively the
27 * queue number. 27 * queue number.
28 */ 28 */
29 int idx; 29 int idx;
30 struct perf_cpu cpu; 30 struct perf_cpu cpu;
31 pid_t tid; 31 pid_t tid;
32 32
33 /* Guest machine pid and VCPU, valid o <<
34 pid_t machine_pid; <<
35 struct perf_cpu vcpu; <<
36 <<
37 /* Holds total ID period value for PER 33 /* Holds total ID period value for PERF_SAMPLE_READ processing. */
38 u64 period; 34 u64 period;
39 }; 35 };
40 36
41 struct perf_evsel { 37 struct perf_evsel {
42 struct list_head node; 38 struct list_head node;
43 struct perf_event_attr attr; 39 struct perf_event_attr attr;
44 /** The commonly used cpu map of CPUs <<
45 struct perf_cpu_map *cpus; 40 struct perf_cpu_map *cpus;
46 /** <<
47 * The cpu map read from the PMU. For <<
48 * CPUs the event can be opened upon. <<
49 * cpu map for opening the event on, f <<
50 * socket for an uncore event. <<
51 */ <<
52 struct perf_cpu_map *own_cpus; 41 struct perf_cpu_map *own_cpus;
53 struct perf_thread_map *threads; 42 struct perf_thread_map *threads;
54 struct xyarray *fd; 43 struct xyarray *fd;
55 struct xyarray *mmap; 44 struct xyarray *mmap;
56 struct xyarray *sample_id; 45 struct xyarray *sample_id;
57 u64 *id; 46 u64 *id;
58 u32 ids; 47 u32 ids;
59 struct perf_evsel *leader; 48 struct perf_evsel *leader;
60 49
61 /* parse modifier helper */ 50 /* parse modifier helper */
62 int nr_members; 51 int nr_members;
63 /* <<
64 * system_wide is for events that need <<
65 * of user requested CPUs or threads. <<
66 * dummy event. Map propagation will s <<
67 * as software PMU events like dummy, <<
68 */ <<
69 bool system_wide; 52 bool system_wide;
70 /* <<
71 * Some events, for example uncore eve <<
72 * i.e. it cannot be the 'any CPU' val <<
73 */ <<
74 bool requires_cpu; <<
75 /** Is the PMU for the event a core on <<
76 bool is_pmu_core; <<
77 int idx; 53 int idx;
78 }; 54 };
79 55
80 void perf_evsel__init(struct perf_evsel *evsel 56 void perf_evsel__init(struct perf_evsel *evsel, struct perf_event_attr *attr,
81 int idx); 57 int idx);
82 int perf_evsel__alloc_fd(struct perf_evsel *ev 58 int perf_evsel__alloc_fd(struct perf_evsel *evsel, int ncpus, int nthreads);
83 void perf_evsel__close_fd(struct perf_evsel *e 59 void perf_evsel__close_fd(struct perf_evsel *evsel);
84 void perf_evsel__free_fd(struct perf_evsel *ev 60 void perf_evsel__free_fd(struct perf_evsel *evsel);
85 int perf_evsel__read_size(struct perf_evsel *e 61 int perf_evsel__read_size(struct perf_evsel *evsel);
86 int perf_evsel__apply_filter(struct perf_evsel 62 int perf_evsel__apply_filter(struct perf_evsel *evsel, const char *filter);
87 63
88 int perf_evsel__alloc_id(struct perf_evsel *ev 64 int perf_evsel__alloc_id(struct perf_evsel *evsel, int ncpus, int nthreads);
89 void perf_evsel__free_id(struct perf_evsel *ev 65 void perf_evsel__free_id(struct perf_evsel *evsel);
90 66
91 #endif /* __LIBPERF_INTERNAL_EVSEL_H */ 67 #endif /* __LIBPERF_INTERNAL_EVSEL_H */
92 68
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