diff options
Diffstat (limited to 'tools/perf/util/session.h')
| -rw-r--r-- | tools/perf/util/session.h | 138 |
1 files changed, 111 insertions, 27 deletions
diff --git a/tools/perf/util/session.h b/tools/perf/util/session.h index 47b5e7dbcb18..22d3ff877e83 100644 --- a/tools/perf/util/session.h +++ b/tools/perf/util/session.h @@ -1,3 +1,4 @@ +/* SPDX-License-Identifier: GPL-2.0 */ #ifndef __PERF_SESSION_H #define __PERF_SESSION_H @@ -7,6 +8,7 @@ #include "machine.h" #include "data.h" #include "ordered-events.h" +#include "util/compress.h" #include <linux/kernel.h> #include <linux/rbtree.h> #include <linux/perf_event.h> @@ -18,28 +20,102 @@ struct thread; struct auxtrace; struct itrace_synth_opts; +struct decomp_data { + struct decomp *decomp; + struct decomp *decomp_last; + struct zstd_data *zstd_decomp; +}; + +/** + * struct perf_session- A Perf session holds the main state when the program is + * working with live perf events or reading data from an input file. + * + * The rough organization of a perf_session is: + * ``` + * +--------------+ +-----------+ +------------+ + * | Session |1..* ----->| Machine |1..* ----->| Thread | + * +--------------+ +-----------+ +------------+ + * ``` + */ struct perf_session { + /** + * @header: The read version of a perf_file_header, or captures global + * information from a live session. + */ struct perf_header header; + /** @machines: Machines within the session a host and 0 or more guests. */ struct machines machines; - struct perf_evlist *evlist; - struct auxtrace *auxtrace; + /** @evlist: List of evsels/events of the session. */ + struct evlist *evlist; + /** @auxtrace: callbacks to allow AUX area data decoding. */ + const struct auxtrace *auxtrace; + /** @itrace_synth_opts: AUX area tracing synthesis options. */ struct itrace_synth_opts *itrace_synth_opts; + /** @auxtrace_index: index of AUX area tracing events within a perf.data file. */ struct list_head auxtrace_index; +#ifdef HAVE_LIBTRACEEVENT + /** @tevent: handles for libtraceevent and plugins. */ struct trace_event tevent; - struct time_conv_event time_conv; - bool repipe; +#endif + /** @time_conv: Holds contents of last PERF_RECORD_TIME_CONV event. */ + struct perf_record_time_conv time_conv; + /** @trace_event_repipe: When set causes read trace events to be written to stdout. */ + bool trace_event_repipe; + /** + * @one_mmap: The reader will use a single mmap by default. There may be + * multiple data files in particular for aux events. If this is true + * then the single big mmap for the data file can be assumed. + */ bool one_mmap; + /** @one_mmap_addr: Address of initial perf data file reader mmap. */ void *one_mmap_addr; + /** @one_mmap_offset: File offset in perf.data file when mapped. */ u64 one_mmap_offset; + /** @ordered_events: Used to turn unordered events into ordered ones. */ struct ordered_events ordered_events; - struct perf_data_file *file; - struct perf_tool *tool; + /** @data: Optional perf data file being read from. */ + struct perf_data *data; + /** @tool: callbacks for event handling. */ + const struct perf_tool *tool; + /** + * @bytes_transferred: Used by perf record to count written bytes before + * compression. + */ + u64 bytes_transferred; + /** + * @bytes_compressed: Used by perf record to count written bytes after + * compression. + */ + u64 bytes_compressed; + /** @zstd_data: Owner of global compression state, buffers, etc. */ + struct zstd_data zstd_data; + struct decomp_data decomp_data; + struct decomp_data *active_decomp; +}; + +struct decomp { + struct decomp *next; + u64 file_pos; + const char *file_path; + size_t mmap_len; + u64 head; + size_t size; + char data[]; }; struct perf_tool; -struct perf_session *perf_session__new(struct perf_data_file *file, - bool repipe, struct perf_tool *tool); +struct perf_session *__perf_session__new(struct perf_data *data, + struct perf_tool *tool, + bool trace_event_repipe, + struct perf_env *host_env); + +static inline struct perf_session *perf_session__new(struct perf_data *data, + struct perf_tool *tool) +{ + return __perf_session__new(data, tool, /*trace_event_repipe=*/false, /*host_env=*/NULL); +} + void perf_session__delete(struct perf_session *session); void perf_event_header__bswap(struct perf_event_header *hdr); @@ -48,21 +124,25 @@ int perf_session__peek_event(struct perf_session *session, off_t file_offset, void *buf, size_t buf_sz, union perf_event **event_ptr, struct perf_sample *sample); +typedef int (*peek_events_cb_t)(struct perf_session *session, + union perf_event *event, u64 offset, + void *data); +int perf_session__peek_events(struct perf_session *session, u64 offset, + u64 size, peek_events_cb_t cb, void *data); int perf_session__process_events(struct perf_session *session); int perf_session__queue_event(struct perf_session *s, union perf_event *event, - struct perf_sample *sample, u64 file_offset); - -void perf_tool__fill_defaults(struct perf_tool *tool); + u64 timestamp, u64 file_offset, const char *file_path); int perf_session__resolve_callchain(struct perf_session *session, - struct perf_evsel *evsel, + struct evsel *evsel, struct thread *thread, struct ip_callchain *chain, struct symbol **parent); bool perf_session__has_traces(struct perf_session *session, const char *msg); +bool perf_session__has_switch_events(struct perf_session *session); void perf_event__attr_swap(struct perf_event_attr *attr); @@ -94,7 +174,9 @@ size_t perf_session__fprintf_dsos_buildid(struct perf_session *session, FILE *fp size_t perf_session__fprintf_nr_events(struct perf_session *session, FILE *fp); -struct perf_evsel *perf_session__find_first_evtype(struct perf_session *session, +void perf_session__dump_kmaps(struct perf_session *session); + +struct evsel *perf_session__find_first_evtype(struct perf_session *session, unsigned int type); int perf_session__cpu_bitmap(struct perf_session *session, @@ -102,30 +184,32 @@ int perf_session__cpu_bitmap(struct perf_session *session, void perf_session__fprintf_info(struct perf_session *s, FILE *fp, bool full); -struct perf_evsel_str_handler; - -int __perf_session__set_tracepoints_handlers(struct perf_session *session, - const struct perf_evsel_str_handler *assocs, - size_t nr_assocs); +struct evsel_str_handler; #define perf_session__set_tracepoints_handlers(session, array) \ - __perf_session__set_tracepoints_handlers(session, array, ARRAY_SIZE(array)) + __evlist__set_tracepoints_handlers(session->evlist, array, ARRAY_SIZE(array)) extern volatile int session_done; -#define session_done() ACCESS_ONCE(session_done) +#define session_done() READ_ONCE(session_done) int perf_session__deliver_synth_event(struct perf_session *session, union perf_event *event, struct perf_sample *sample); +int perf_session__deliver_synth_attr_event(struct perf_session *session, + const struct perf_event_attr *attr, + u64 id); + +int perf_session__dsos_hit_all(struct perf_session *session); + +int perf_event__process_id_index(const struct perf_tool *tool, + struct perf_session *session, + union perf_event *event); -int perf_event__process_id_index(struct perf_tool *tool, - union perf_event *event, - struct perf_session *session); +int perf_event__process_finished_round(const struct perf_tool *tool, + union perf_event *event, + struct ordered_events *oe); -int perf_event__synthesize_id_index(struct perf_tool *tool, - perf_event__handler_t process, - struct perf_evlist *evlist, - struct machine *machine); +struct perf_env *perf_session__env(struct perf_session *session); #endif /* __PERF_SESSION_H */ |