change system file

hc

2024-10-09 244b2c5ca8b14627e4a17755e5922221e121c771

 kernel/tools/perf/util/evlist.h
..
..
@@ -7,32 +7,51 @@
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7
 #include <linux/refcount.h>
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 #include <linux/list.h>
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 #include <api/fd/array.h>
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-#include <stdio.h>
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-#include "../perf.h"
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-#include "event.h"
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+#include <internal/evlist.h>
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+#include <internal/evsel.h>
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+#include "events_stats.h"
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 #include "evsel.h"
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-#include "mmap.h"
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-#include "util.h"
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+#include <pthread.h>
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 #include <signal.h>
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 #include <unistd.h>
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17
 
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 struct pollfd;
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 struct thread_map;
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-struct cpu_map;
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+struct perf_cpu_map;
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 struct record_opts;
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22
 
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-#define PERF_EVLIST__HLIST_BITS 8
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-#define PERF_EVLIST__HLIST_SIZE (1 << PERF_EVLIST__HLIST_BITS)
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+/*
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+ * State machine of bkw_mmap_state:
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+ *
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+ *                     .________________(forbid)_____________.
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+ *                     |                                     V
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+ * NOTREADY --(0)--> RUNNING --(1)--> DATA_PENDING --(2)--> EMPTY
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+ *                     ^  ^              |   ^               |
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+ *                     |  |__(forbid)____/   |___(forbid)___/|
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+ *                     |                                     |
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+ *                      \_________________(3)_______________/
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+ *
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+ * NOTREADY     : Backward ring buffers are not ready
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+ * RUNNING      : Backward ring buffers are recording
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+ * DATA_PENDING : We are required to collect data from backward ring buffers
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+ * EMPTY        : We have collected data from backward ring buffers.
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+ *
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+ * (0): Setup backward ring buffer
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+ * (1): Pause ring buffers for reading
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+ * (2): Read from ring buffers
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+ * (3): Resume ring buffers for recording
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+ */
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+enum bkw_mmap_state {
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+	BKW_MMAP_NOTREADY,
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+	BKW_MMAP_RUNNING,
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+	BKW_MMAP_DATA_PENDING,
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+	BKW_MMAP_EMPTY,
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+};
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50
 
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-struct perf_evlist {
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-	struct list_head entries;
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-	struct hlist_head heads[PERF_EVLIST__HLIST_SIZE];
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-	int		 nr_entries;
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+struct evlist {
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+	struct perf_evlist core;
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 	int		 nr_groups;
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-	int		 nr_mmaps;
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 	bool		 enabled;
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-	bool		 has_user_cpus;
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-	size_t		 mmap_len;
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 	int		 id_pos;
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 	int		 is_pos;
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 	u64		 combined_sample_type;
..
..
@@ -41,55 +60,79 @@
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 		int	cork_fd;
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 		pid_t	pid;
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 	} workload;
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-	struct fdarray	 pollfd;
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-	struct perf_mmap *mmap;
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-	struct perf_mmap *overwrite_mmap;
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-	struct thread_map *threads;
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-	struct cpu_map	  *cpus;
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-	struct perf_evsel *selected;
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+	struct mmap *mmap;
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+	struct mmap *overwrite_mmap;
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+	struct evsel *selected;
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 	struct events_stats stats;
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 	struct perf_env	*env;
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+	void (*trace_event_sample_raw)(struct evlist *evlist,
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+				       union perf_event *event,
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+				       struct perf_sample *sample);
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 	u64		first_sample_time;
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 	u64		last_sample_time;
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+	struct {
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+		pthread_t		th;
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+		volatile int		done;
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+	} thread;
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+	struct {
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+		int	fd;	/* control file descriptor */
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+		int	ack;	/* ack file descriptor for control commands */
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+		int	pos;	/* index at evlist core object to check signals */
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+	} ctl_fd;
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 };
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83
 
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-struct perf_evsel_str_handler {
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+struct evsel_str_handler {
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 	const char *name;
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 	void	   *handler;
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 };
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88
 
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-struct perf_evlist *perf_evlist__new(void);
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-struct perf_evlist *perf_evlist__new_default(void);
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-struct perf_evlist *perf_evlist__new_dummy(void);
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-void perf_evlist__init(struct perf_evlist *evlist, struct cpu_map *cpus,
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-		       struct thread_map *threads);
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-void perf_evlist__exit(struct perf_evlist *evlist);
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-void perf_evlist__delete(struct perf_evlist *evlist);
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+struct evlist *evlist__new(void);
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+struct evlist *perf_evlist__new_default(void);
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+struct evlist *perf_evlist__new_dummy(void);
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+void evlist__init(struct evlist *evlist, struct perf_cpu_map *cpus,
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+		  struct perf_thread_map *threads);
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+void evlist__exit(struct evlist *evlist);
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+void evlist__delete(struct evlist *evlist);
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96
 
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-void perf_evlist__add(struct perf_evlist *evlist, struct perf_evsel *entry);
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-void perf_evlist__remove(struct perf_evlist *evlist, struct perf_evsel *evsel);
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+void evlist__add(struct evlist *evlist, struct evsel *entry);
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+void evlist__remove(struct evlist *evlist, struct evsel *evsel);
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99
 
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-int __perf_evlist__add_default(struct perf_evlist *evlist, bool precise);
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+int __evlist__add_default(struct evlist *evlist, bool precise);
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101
 
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-static inline int perf_evlist__add_default(struct perf_evlist *evlist)
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+static inline int evlist__add_default(struct evlist *evlist)
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 {
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-	return __perf_evlist__add_default(evlist, true);
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+	return __evlist__add_default(evlist, true);
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 }
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-int __perf_evlist__add_default_attrs(struct perf_evlist *evlist,
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+int __evlist__add_default_attrs(struct evlist *evlist,
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 				     struct perf_event_attr *attrs, size_t nr_attrs);
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109
 
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-#define perf_evlist__add_default_attrs(evlist, array) \
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-	__perf_evlist__add_default_attrs(evlist, array, ARRAY_SIZE(array))
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+#define evlist__add_default_attrs(evlist, array) \
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+	__evlist__add_default_attrs(evlist, array, ARRAY_SIZE(array))
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112
 
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-int perf_evlist__add_dummy(struct perf_evlist *evlist);
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+int evlist__add_dummy(struct evlist *evlist);
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114
 
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-int perf_evlist__add_newtp(struct perf_evlist *evlist,
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-			   const char *sys, const char *name, void *handler);
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+int perf_evlist__add_sb_event(struct evlist *evlist,
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+			      struct perf_event_attr *attr,
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+			      evsel__sb_cb_t cb,
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+			      void *data);
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+void evlist__set_cb(struct evlist *evlist, evsel__sb_cb_t cb, void *data);
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+int perf_evlist__start_sb_thread(struct evlist *evlist,
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+				 struct target *target);
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+void perf_evlist__stop_sb_thread(struct evlist *evlist);
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123
 
90
-void __perf_evlist__set_sample_bit(struct perf_evlist *evlist,
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+int evlist__add_newtp(struct evlist *evlist, const char *sys, const char *name, void *handler);
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+
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+int __evlist__set_tracepoints_handlers(struct evlist *evlist,
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+				       const struct evsel_str_handler *assocs,
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+				       size_t nr_assocs);
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+
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+#define evlist__set_tracepoints_handlers(evlist, array) \
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+	__evlist__set_tracepoints_handlers(evlist, array, ARRAY_SIZE(array))
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+
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+void __perf_evlist__set_sample_bit(struct evlist *evlist,
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 				   enum perf_event_sample_format bit);
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-void __perf_evlist__reset_sample_bit(struct perf_evlist *evlist,
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+void __perf_evlist__reset_sample_bit(struct evlist *evlist,
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 				     enum perf_event_sample_format bit);
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137
 
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 #define perf_evlist__set_sample_bit(evlist, bit) \
..
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@@ -98,58 +141,57 @@
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 #define perf_evlist__reset_sample_bit(evlist, bit) \
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 	__perf_evlist__reset_sample_bit(evlist, PERF_SAMPLE_##bit)
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143
 
101
-int perf_evlist__set_filter(struct perf_evlist *evlist, const char *filter);
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-int perf_evlist__set_filter_pid(struct perf_evlist *evlist, pid_t pid);
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-int perf_evlist__set_filter_pids(struct perf_evlist *evlist, size_t npids, pid_t *pids);
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+int perf_evlist__set_tp_filter(struct evlist *evlist, const char *filter);
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+int perf_evlist__set_tp_filter_pid(struct evlist *evlist, pid_t pid);
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+int perf_evlist__set_tp_filter_pids(struct evlist *evlist, size_t npids, pid_t *pids);
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-struct perf_evsel *
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-perf_evlist__find_tracepoint_by_id(struct perf_evlist *evlist, int id);
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+int perf_evlist__append_tp_filter(struct evlist *evlist, const char *filter);
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149
 
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-struct perf_evsel *
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-perf_evlist__find_tracepoint_by_name(struct perf_evlist *evlist,
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+int perf_evlist__append_tp_filter_pid(struct evlist *evlist, pid_t pid);
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+int perf_evlist__append_tp_filter_pids(struct evlist *evlist, size_t npids, pid_t *pids);
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+
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+struct evsel *
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+perf_evlist__find_tracepoint_by_id(struct evlist *evlist, int id);
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+
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+struct evsel *
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+perf_evlist__find_tracepoint_by_name(struct evlist *evlist,
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 				     const char *name);
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159
 
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-void perf_evlist__id_add(struct perf_evlist *evlist, struct perf_evsel *evsel,
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-			 int cpu, int thread, u64 id);
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-int perf_evlist__id_add_fd(struct perf_evlist *evlist,
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-			   struct perf_evsel *evsel,
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-			   int cpu, int thread, int fd);
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+int evlist__add_pollfd(struct evlist *evlist, int fd);
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+int evlist__filter_pollfd(struct evlist *evlist, short revents_and_mask);
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162
 
118
-int perf_evlist__add_pollfd(struct perf_evlist *evlist, int fd);
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-int perf_evlist__alloc_pollfd(struct perf_evlist *evlist);
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-int perf_evlist__filter_pollfd(struct perf_evlist *evlist, short revents_and_mask);
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+#ifdef HAVE_EVENTFD_SUPPORT
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+int evlist__add_wakeup_eventfd(struct evlist *evlist, int fd);
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+#endif
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166
 
122
-int perf_evlist__poll(struct perf_evlist *evlist, int timeout);
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+int evlist__poll(struct evlist *evlist, int timeout);
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168
 
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-struct perf_evsel *perf_evlist__id2evsel(struct perf_evlist *evlist, u64 id);
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-struct perf_evsel *perf_evlist__id2evsel_strict(struct perf_evlist *evlist,
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+struct evsel *perf_evlist__id2evsel(struct evlist *evlist, u64 id);
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+struct evsel *perf_evlist__id2evsel_strict(struct evlist *evlist,
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 						u64 id);
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172
 
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-struct perf_sample_id *perf_evlist__id2sid(struct perf_evlist *evlist, u64 id);
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+struct perf_sample_id *perf_evlist__id2sid(struct evlist *evlist, u64 id);
129
174
 
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-void perf_evlist__toggle_bkw_mmap(struct perf_evlist *evlist, enum bkw_mmap_state state);
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+void perf_evlist__toggle_bkw_mmap(struct evlist *evlist, enum bkw_mmap_state state);
131
176
 
132
-void perf_evlist__mmap_consume(struct perf_evlist *evlist, int idx);
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+void evlist__mmap_consume(struct evlist *evlist, int idx);
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178
 
134
-int perf_evlist__open(struct perf_evlist *evlist);
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-void perf_evlist__close(struct perf_evlist *evlist);
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+int evlist__open(struct evlist *evlist);
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+void evlist__close(struct evlist *evlist);
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181
 
137
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 struct callchain_param;
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183
 
139
-void perf_evlist__set_id_pos(struct perf_evlist *evlist);
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-bool perf_can_sample_identifier(void);
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-bool perf_can_record_switch_events(void);
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-bool perf_can_record_cpu_wide(void);
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-void perf_evlist__config(struct perf_evlist *evlist, struct record_opts *opts,
184
+void perf_evlist__set_id_pos(struct evlist *evlist);
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+void perf_evlist__config(struct evlist *evlist, struct record_opts *opts,
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 			 struct callchain_param *callchain);
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187
 int record_opts__config(struct record_opts *opts);
146
188
 
147
-int perf_evlist__prepare_workload(struct perf_evlist *evlist,
189
+int perf_evlist__prepare_workload(struct evlist *evlist,
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 				  struct target *target,
149
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 				  const char *argv[], bool pipe_output,
150
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 				  void (*exec_error)(int signo, siginfo_t *info,
151
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 						     void *ucontext));
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-int perf_evlist__start_workload(struct perf_evlist *evlist);
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+int perf_evlist__start_workload(struct evlist *evlist);
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195
 
154
196
 struct option;
155
197
 
..
..
@@ -160,76 +202,76 @@
160
202
 
161
203
 unsigned long perf_event_mlock_kb_in_pages(void);
162
204
 
163
-int perf_evlist__mmap_ex(struct perf_evlist *evlist, unsigned int pages,
205
+int evlist__mmap_ex(struct evlist *evlist, unsigned int pages,
164
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 			 unsigned int auxtrace_pages,
165
-			 bool auxtrace_overwrite);
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-int perf_evlist__mmap(struct perf_evlist *evlist, unsigned int pages);
167
-void perf_evlist__munmap(struct perf_evlist *evlist);
207
+			 bool auxtrace_overwrite, int nr_cblocks,
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+			 int affinity, int flush, int comp_level);
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+int evlist__mmap(struct evlist *evlist, unsigned int pages);
210
+void evlist__munmap(struct evlist *evlist);
168
211
 
169
-size_t perf_evlist__mmap_size(unsigned long pages);
212
+size_t evlist__mmap_size(unsigned long pages);
170
213
 
171
-void perf_evlist__disable(struct perf_evlist *evlist);
172
-void perf_evlist__enable(struct perf_evlist *evlist);
173
-void perf_evlist__toggle_enable(struct perf_evlist *evlist);
214
+void evlist__disable(struct evlist *evlist);
215
+void evlist__enable(struct evlist *evlist);
216
+void perf_evlist__toggle_enable(struct evlist *evlist);
174
217
 
175
-int perf_evlist__enable_event_idx(struct perf_evlist *evlist,
176
-				  struct perf_evsel *evsel, int idx);
218
+int perf_evlist__enable_event_idx(struct evlist *evlist,
219
+				  struct evsel *evsel, int idx);
177
220
 
178
-void perf_evlist__set_selected(struct perf_evlist *evlist,
179
-			       struct perf_evsel *evsel);
221
+void perf_evlist__set_selected(struct evlist *evlist,
222
+			       struct evsel *evsel);
180
223
 
181
-void perf_evlist__set_maps(struct perf_evlist *evlist, struct cpu_map *cpus,
182
-			   struct thread_map *threads);
183
-int perf_evlist__create_maps(struct perf_evlist *evlist, struct target *target);
184
-int perf_evlist__apply_filters(struct perf_evlist *evlist, struct perf_evsel **err_evsel);
224
+int perf_evlist__create_maps(struct evlist *evlist, struct target *target);
225
+int perf_evlist__apply_filters(struct evlist *evlist, struct evsel **err_evsel);
185
226
 
186
227
 void __perf_evlist__set_leader(struct list_head *list);
187
-void perf_evlist__set_leader(struct perf_evlist *evlist);
228
+void perf_evlist__set_leader(struct evlist *evlist);
188
229
 
189
-u64 perf_evlist__read_format(struct perf_evlist *evlist);
190
-u64 __perf_evlist__combined_sample_type(struct perf_evlist *evlist);
191
-u64 perf_evlist__combined_sample_type(struct perf_evlist *evlist);
192
-u64 perf_evlist__combined_branch_type(struct perf_evlist *evlist);
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-bool perf_evlist__sample_id_all(struct perf_evlist *evlist);
194
-u16 perf_evlist__id_hdr_size(struct perf_evlist *evlist);
230
+u64 __evlist__combined_sample_type(struct evlist *evlist);
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+u64 evlist__combined_sample_type(struct evlist *evlist);
232
+u64 evlist__combined_branch_type(struct evlist *evlist);
233
+bool evlist__sample_id_all(struct evlist *evlist);
234
+u16 perf_evlist__id_hdr_size(struct evlist *evlist);
195
235
 
196
-int perf_evlist__parse_sample(struct perf_evlist *evlist, union perf_event *event,
236
+int perf_evlist__parse_sample(struct evlist *evlist, union perf_event *event,
197
237
 			      struct perf_sample *sample);
198
238
 
199
-int perf_evlist__parse_sample_timestamp(struct perf_evlist *evlist,
239
+int perf_evlist__parse_sample_timestamp(struct evlist *evlist,
200
240
 					union perf_event *event,
201
241
 					u64 *timestamp);
202
242
 
203
-bool perf_evlist__valid_sample_type(struct perf_evlist *evlist);
204
-bool perf_evlist__valid_sample_id_all(struct perf_evlist *evlist);
205
-bool perf_evlist__valid_read_format(struct perf_evlist *evlist);
243
+bool evlist__valid_sample_type(struct evlist *evlist);
244
+bool evlist__valid_sample_id_all(struct evlist *evlist);
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+bool perf_evlist__valid_read_format(struct evlist *evlist);
206
246
 
207
-void perf_evlist__splice_list_tail(struct perf_evlist *evlist,
247
+void perf_evlist__splice_list_tail(struct evlist *evlist,
208
248
 				   struct list_head *list);
209
249
 
210
-static inline bool perf_evlist__empty(struct perf_evlist *evlist)
250
+static inline bool perf_evlist__empty(struct evlist *evlist)
211
251
 {
212
-	return list_empty(&evlist->entries);
252
+	return list_empty(&evlist->core.entries);
213
253
 }
214
254
 
215
-static inline struct perf_evsel *perf_evlist__first(struct perf_evlist *evlist)
255
+static inline struct evsel *evlist__first(struct evlist *evlist)
216
256
 {
217
-	return list_entry(evlist->entries.next, struct perf_evsel, node);
257
+	struct perf_evsel *evsel = perf_evlist__first(&evlist->core);
258
+
259
+	return container_of(evsel, struct evsel, core);
218
260
 }
219
261
 
220
-static inline struct perf_evsel *perf_evlist__last(struct perf_evlist *evlist)
262
+static inline struct evsel *evlist__last(struct evlist *evlist)
221
263
 {
222
-	return list_entry(evlist->entries.prev, struct perf_evsel, node);
264
+	struct perf_evsel *evsel = perf_evlist__last(&evlist->core);
265
+
266
+	return container_of(evsel, struct evsel, core);
223
267
 }
224
268
 
225
-size_t perf_evlist__fprintf(struct perf_evlist *evlist, FILE *fp);
269
+int evlist__strerror_open(struct evlist *evlist, int err, char *buf, size_t size);
270
+int evlist__strerror_mmap(struct evlist *evlist, int err, char *buf, size_t size);
226
271
 
227
-int perf_evlist__strerror_open(struct perf_evlist *evlist, int err, char *buf, size_t size);
228
-int perf_evlist__strerror_mmap(struct perf_evlist *evlist, int err, char *buf, size_t size);
229
-
230
-bool perf_evlist__can_select_event(struct perf_evlist *evlist, const char *str);
231
-void perf_evlist__to_front(struct perf_evlist *evlist,
232
-			   struct perf_evsel *move_evsel);
272
+bool perf_evlist__can_select_event(struct evlist *evlist, const char *str);
273
+void perf_evlist__to_front(struct evlist *evlist,
274
+			   struct evsel *move_evsel);
233
275
 
234
276
 /**
235
277
  * __evlist__for_each_entry - iterate thru all the evsels
..
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@@ -237,7 +279,7 @@
237
279
  * @evsel: struct evsel iterator
238
280
  */
239
281
 #define __evlist__for_each_entry(list, evsel) \
240
-        list_for_each_entry(evsel, list, node)
282
+        list_for_each_entry(evsel, list, core.node)
241
283
 
242
284
 /**
243
285
  * evlist__for_each_entry - iterate thru all the evsels
..
..
@@ -245,7 +287,7 @@
245
287
  * @evsel: struct evsel iterator
246
288
  */
247
289
 #define evlist__for_each_entry(evlist, evsel) \
248
-	__evlist__for_each_entry(&(evlist)->entries, evsel)
290
+	__evlist__for_each_entry(&(evlist)->core.entries, evsel)
249
291
 
250
292
 /**
251
293
  * __evlist__for_each_entry_continue - continue iteration thru all the evsels
..
..
@@ -253,7 +295,7 @@
253
295
  * @evsel: struct evsel iterator
254
296
  */
255
297
 #define __evlist__for_each_entry_continue(list, evsel) \
256
-        list_for_each_entry_continue(evsel, list, node)
298
+        list_for_each_entry_continue(evsel, list, core.node)
257
299
 
258
300
 /**
259
301
  * evlist__for_each_entry_continue - continue iteration thru all the evsels
..
..
@@ -261,7 +303,7 @@
261
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  * @evsel: struct evsel iterator
262
304
  */
263
305
 #define evlist__for_each_entry_continue(evlist, evsel) \
264
-	__evlist__for_each_entry_continue(&(evlist)->entries, evsel)
306
+	__evlist__for_each_entry_continue(&(evlist)->core.entries, evsel)
265
307
 
266
308
 /**
267
309
  * __evlist__for_each_entry_reverse - iterate thru all the evsels in reverse order
..
..
@@ -269,7 +311,7 @@
269
311
  * @evsel: struct evsel iterator
270
312
  */
271
313
 #define __evlist__for_each_entry_reverse(list, evsel) \
272
-        list_for_each_entry_reverse(evsel, list, node)
314
+        list_for_each_entry_reverse(evsel, list, core.node)
273
315
 
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 /**
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  * evlist__for_each_entry_reverse - iterate thru all the evsels in reverse order
..
..
@@ -277,7 +319,7 @@
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  * @evsel: struct evsel iterator
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  */
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 #define evlist__for_each_entry_reverse(evlist, evsel) \
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-	__evlist__for_each_entry_reverse(&(evlist)->entries, evsel)
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+	__evlist__for_each_entry_reverse(&(evlist)->core.entries, evsel)
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 /**
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  * __evlist__for_each_entry_safe - safely iterate thru all the evsels
..
..
@@ -286,7 +328,7 @@
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  * @evsel: struct evsel iterator
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  */
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 #define __evlist__for_each_entry_safe(list, tmp, evsel) \
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-        list_for_each_entry_safe(evsel, tmp, list, node)
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+        list_for_each_entry_safe(evsel, tmp, list, core.node)
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 /**
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  * evlist__for_each_entry_safe - safely iterate thru all the evsels
..
..
@@ -295,21 +337,58 @@
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  * @tmp: struct evsel temp iterator
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  */
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 #define evlist__for_each_entry_safe(evlist, tmp, evsel) \
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-	__evlist__for_each_entry_safe(&(evlist)->entries, tmp, evsel)
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+	__evlist__for_each_entry_safe(&(evlist)->core.entries, tmp, evsel)
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341
 
300
-void perf_evlist__set_tracking_event(struct perf_evlist *evlist,
301
-				     struct perf_evsel *tracking_evsel);
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+#define evlist__for_each_cpu(evlist, index, cpu)	\
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+	evlist__cpu_iter_start(evlist);			\
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+	perf_cpu_map__for_each_cpu (cpu, index, (evlist)->core.all_cpus)
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-void perf_event_attr__set_max_precise_ip(struct perf_event_attr *attr);
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+struct evsel *perf_evlist__get_tracking_event(struct evlist *evlist);
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+void perf_evlist__set_tracking_event(struct evlist *evlist,
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+				     struct evsel *tracking_evsel);
304
349
 
305
-struct perf_evsel *
306
-perf_evlist__find_evsel_by_str(struct perf_evlist *evlist, const char *str);
350
+void evlist__cpu_iter_start(struct evlist *evlist);
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+bool evsel__cpu_iter_skip(struct evsel *ev, int cpu);
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+bool evsel__cpu_iter_skip_no_inc(struct evsel *ev, int cpu);
307
353
 
308
-struct perf_evsel *perf_evlist__event2evsel(struct perf_evlist *evlist,
354
+struct evsel *
355
+perf_evlist__find_evsel_by_str(struct evlist *evlist, const char *str);
356
+
357
+struct evsel *perf_evlist__event2evsel(struct evlist *evlist,
309
358
 					    union perf_event *event);
310
359
 
311
-bool perf_evlist__exclude_kernel(struct perf_evlist *evlist);
360
+bool perf_evlist__exclude_kernel(struct evlist *evlist);
312
361
 
313
-void perf_evlist__force_leader(struct perf_evlist *evlist);
362
+void perf_evlist__force_leader(struct evlist *evlist);
314
363
 
364
+struct evsel *perf_evlist__reset_weak_group(struct evlist *evlist,
365
+						 struct evsel *evsel,
366
+						bool close);
367
+#define EVLIST_CTL_CMD_ENABLE_TAG  "enable"
368
+#define EVLIST_CTL_CMD_DISABLE_TAG "disable"
369
+#define EVLIST_CTL_CMD_ACK_TAG     "ack\n"
370
+#define EVLIST_CTL_CMD_SNAPSHOT_TAG "snapshot"
371
+
372
+#define EVLIST_CTL_CMD_MAX_LEN 64
373
+
374
+enum evlist_ctl_cmd {
375
+	EVLIST_CTL_CMD_UNSUPPORTED = 0,
376
+	EVLIST_CTL_CMD_ENABLE,
377
+	EVLIST_CTL_CMD_DISABLE,
378
+	EVLIST_CTL_CMD_ACK,
379
+	EVLIST_CTL_CMD_SNAPSHOT,
380
+};
381
+
382
+int evlist__parse_control(const char *str, int *ctl_fd, int *ctl_fd_ack, bool *ctl_fd_close);
383
+void evlist__close_control(int ctl_fd, int ctl_fd_ack, bool *ctl_fd_close);
384
+int evlist__initialize_ctlfd(struct evlist *evlist, int ctl_fd, int ctl_fd_ack);
385
+int evlist__finalize_ctlfd(struct evlist *evlist);
386
+bool evlist__ctlfd_initialized(struct evlist *evlist);
387
+int evlist__ctlfd_process(struct evlist *evlist, enum evlist_ctl_cmd *cmd);
388
+int evlist__ctlfd_ack(struct evlist *evlist);
389
+
390
+#define EVLIST_ENABLED_MSG "Events enabled\n"
391
+#define EVLIST_DISABLED_MSG "Events disabled\n"
392
+
393
+struct evsel *evlist__find_evsel(struct evlist *evlist, int idx);
315
394
 #endif /* __PERF_EVLIST_H */