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-rw-r--r--tools/perf/util/evlist.h81
1 files changed, 48 insertions, 33 deletions
diff --git a/tools/perf/util/evlist.h b/tools/perf/util/evlist.h
index a55f0f2546e5..7cfe75522ba5 100644
--- a/tools/perf/util/evlist.h
+++ b/tools/perf/util/evlist.h
@@ -7,11 +7,11 @@
#include <linux/refcount.h>
#include <linux/list.h>
#include <api/fd/array.h>
-#include <stdio.h>
#include <internal/evlist.h>
+#include <internal/evsel.h>
#include "events_stats.h"
#include "evsel.h"
-#include "mmap.h"
+#include <pthread.h>
#include <signal.h>
#include <unistd.h>
@@ -20,16 +20,38 @@ struct thread_map;
struct perf_cpu_map;
struct record_opts;
-#define PERF_EVLIST__HLIST_BITS 8
-#define PERF_EVLIST__HLIST_SIZE (1 << PERF_EVLIST__HLIST_BITS)
+/*
+ * State machine of bkw_mmap_state:
+ *
+ * .________________(forbid)_____________.
+ * | V
+ * NOTREADY --(0)--> RUNNING --(1)--> DATA_PENDING --(2)--> EMPTY
+ * ^ ^ | ^ |
+ * | |__(forbid)____/ |___(forbid)___/|
+ * | |
+ * \_________________(3)_______________/
+ *
+ * NOTREADY : Backward ring buffers are not ready
+ * RUNNING : Backward ring buffers are recording
+ * DATA_PENDING : We are required to collect data from backward ring buffers
+ * EMPTY : We have collected data from backward ring buffers.
+ *
+ * (0): Setup backward ring buffer
+ * (1): Pause ring buffers for reading
+ * (2): Read from ring buffers
+ * (3): Resume ring buffers for recording
+ */
+enum bkw_mmap_state {
+ BKW_MMAP_NOTREADY,
+ BKW_MMAP_RUNNING,
+ BKW_MMAP_DATA_PENDING,
+ BKW_MMAP_EMPTY,
+};
struct evlist {
struct perf_evlist core;
- struct hlist_head heads[PERF_EVLIST__HLIST_SIZE];
int nr_groups;
- int nr_mmaps;
bool enabled;
- size_t mmap_len;
int id_pos;
int is_pos;
u64 combined_sample_type;
@@ -38,9 +60,8 @@ struct evlist {
int cork_fd;
pid_t pid;
} workload;
- struct fdarray pollfd;
- struct perf_mmap *mmap;
- struct perf_mmap *overwrite_mmap;
+ struct mmap *mmap;
+ struct mmap *overwrite_mmap;
struct evsel *selected;
struct events_stats stats;
struct perf_env *env;
@@ -65,7 +86,7 @@ struct evlist *perf_evlist__new_default(void);
struct evlist *perf_evlist__new_dummy(void);
void evlist__init(struct evlist *evlist, struct perf_cpu_map *cpus,
struct perf_thread_map *threads);
-void perf_evlist__exit(struct evlist *evlist);
+void evlist__exit(struct evlist *evlist);
void evlist__delete(struct evlist *evlist);
void evlist__add(struct evlist *evlist, struct evsel *entry);
@@ -119,17 +140,10 @@ struct evsel *
perf_evlist__find_tracepoint_by_name(struct evlist *evlist,
const char *name);
-void perf_evlist__id_add(struct evlist *evlist, struct evsel *evsel,
- int cpu, int thread, u64 id);
-int perf_evlist__id_add_fd(struct evlist *evlist,
- struct evsel *evsel,
- int cpu, int thread, int fd);
-
-int perf_evlist__add_pollfd(struct evlist *evlist, int fd);
-int perf_evlist__alloc_pollfd(struct evlist *evlist);
-int perf_evlist__filter_pollfd(struct evlist *evlist, short revents_and_mask);
+int evlist__add_pollfd(struct evlist *evlist, int fd);
+int evlist__filter_pollfd(struct evlist *evlist, short revents_and_mask);
-int perf_evlist__poll(struct evlist *evlist, int timeout);
+int evlist__poll(struct evlist *evlist, int timeout);
struct evsel *perf_evlist__id2evsel(struct evlist *evlist, u64 id);
struct evsel *perf_evlist__id2evsel_strict(struct evlist *evlist,
@@ -139,7 +153,7 @@ struct perf_sample_id *perf_evlist__id2sid(struct evlist *evlist, u64 id);
void perf_evlist__toggle_bkw_mmap(struct evlist *evlist, enum bkw_mmap_state state);
-void perf_evlist__mmap_consume(struct evlist *evlist, int idx);
+void evlist__mmap_consume(struct evlist *evlist, int idx);
int evlist__open(struct evlist *evlist);
void evlist__close(struct evlist *evlist);
@@ -170,14 +184,14 @@ int perf_evlist__parse_mmap_pages(const struct option *opt,
unsigned long perf_event_mlock_kb_in_pages(void);
-int perf_evlist__mmap_ex(struct evlist *evlist, unsigned int pages,
+int evlist__mmap_ex(struct evlist *evlist, unsigned int pages,
unsigned int auxtrace_pages,
bool auxtrace_overwrite, int nr_cblocks,
int affinity, int flush, int comp_level);
-int perf_evlist__mmap(struct evlist *evlist, unsigned int pages);
-void perf_evlist__munmap(struct evlist *evlist);
+int evlist__mmap(struct evlist *evlist, unsigned int pages);
+void evlist__munmap(struct evlist *evlist);
-size_t perf_evlist__mmap_size(unsigned long pages);
+size_t evlist__mmap_size(unsigned long pages);
void evlist__disable(struct evlist *evlist);
void evlist__enable(struct evlist *evlist);
@@ -195,7 +209,6 @@ int perf_evlist__apply_filters(struct evlist *evlist, struct evsel **err_evsel);
void __perf_evlist__set_leader(struct list_head *list);
void perf_evlist__set_leader(struct evlist *evlist);
-u64 perf_evlist__read_format(struct evlist *evlist);
u64 __perf_evlist__combined_sample_type(struct evlist *evlist);
u64 perf_evlist__combined_sample_type(struct evlist *evlist);
u64 perf_evlist__combined_branch_type(struct evlist *evlist);
@@ -221,17 +234,19 @@ static inline bool perf_evlist__empty(struct evlist *evlist)
return list_empty(&evlist->core.entries);
}
-static inline struct evsel *perf_evlist__first(struct evlist *evlist)
+static inline struct evsel *evlist__first(struct evlist *evlist)
{
- return list_entry(evlist->core.entries.next, struct evsel, core.node);
+ struct perf_evsel *evsel = perf_evlist__first(&evlist->core);
+
+ return container_of(evsel, struct evsel, core);
}
-static inline struct evsel *perf_evlist__last(struct evlist *evlist)
+static inline struct evsel *evlist__last(struct evlist *evlist)
{
- return list_entry(evlist->core.entries.prev, struct evsel, core.node);
-}
+ struct perf_evsel *evsel = perf_evlist__last(&evlist->core);
-size_t perf_evlist__fprintf(struct evlist *evlist, FILE *fp);
+ return container_of(evsel, struct evsel, core);
+}
int perf_evlist__strerror_open(struct evlist *evlist, int err, char *buf, size_t size);
int perf_evlist__strerror_mmap(struct evlist *evlist, int err, char *buf, size_t size);