diff options
author | Adrian Hunter <adrian.hunter@intel.com> | 2019-11-15 14:42:21 +0200 |
---|---|---|
committer | Arnaldo Carvalho de Melo <acme@redhat.com> | 2019-11-22 10:48:13 -0300 |
commit | ac2f445fc8989e152dc35eb7af368fd34b92e48a (patch) | |
tree | 161611f2f064eae7246c7a7f21b019cbaadb4ff7 | |
parent | 103ed40e4bfa6986d80983b3e67be9d2f61fc9ee (diff) |
perf auxtrace: Add support for queuing AUX area samples
Add functions to queue AUX area samples in advance
(auxtrace_queue_data()) or individually (auxtrace_queues__add_sample())
or find out what queue a sample belongs on
(auxtrace_queues__sample_queue()).
auxtrace_queue_data() can also queue snapshot data which keeps snapshots
and samples ordered with respect to each other in case support for that
is desired.
Signed-off-by: Adrian Hunter <adrian.hunter@intel.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Link: http://lore.kernel.org/lkml/20191115124225.5247-12-adrian.hunter@intel.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
-rw-r--r-- | tools/perf/util/auxtrace.c | 107 | ||||
-rw-r--r-- | tools/perf/util/auxtrace.h | 15 |
2 files changed, 122 insertions, 0 deletions
diff --git a/tools/perf/util/auxtrace.c b/tools/perf/util/auxtrace.c index 4f5c5fe3516b..eb087e7df6f4 100644 --- a/tools/perf/util/auxtrace.c +++ b/tools/perf/util/auxtrace.c @@ -1004,6 +1004,113 @@ struct auxtrace_buffer *auxtrace_buffer__next(struct auxtrace_queue *queue, } } +struct auxtrace_queue *auxtrace_queues__sample_queue(struct auxtrace_queues *queues, + struct perf_sample *sample, + struct perf_session *session) +{ + struct perf_sample_id *sid; + unsigned int idx; + u64 id; + + id = sample->id; + if (!id) + return NULL; + + sid = perf_evlist__id2sid(session->evlist, id); + if (!sid) + return NULL; + + idx = sid->idx; + + if (idx >= queues->nr_queues) + return NULL; + + return &queues->queue_array[idx]; +} + +int auxtrace_queues__add_sample(struct auxtrace_queues *queues, + struct perf_session *session, + struct perf_sample *sample, u64 data_offset, + u64 reference) +{ + struct auxtrace_buffer buffer = { + .pid = -1, + .data_offset = data_offset, + .reference = reference, + .size = sample->aux_sample.size, + }; + struct perf_sample_id *sid; + u64 id = sample->id; + unsigned int idx; + + if (!id) + return -EINVAL; + + sid = perf_evlist__id2sid(session->evlist, id); + if (!sid) + return -ENOENT; + + idx = sid->idx; + buffer.tid = sid->tid; + buffer.cpu = sid->cpu; + + return auxtrace_queues__add_buffer(queues, session, idx, &buffer, NULL); +} + +struct queue_data { + bool samples; + bool events; +}; + +static int auxtrace_queue_data_cb(struct perf_session *session, + union perf_event *event, u64 offset, + void *data) +{ + struct queue_data *qd = data; + struct perf_sample sample; + int err; + + if (qd->events && event->header.type == PERF_RECORD_AUXTRACE) { + if (event->header.size < sizeof(struct perf_record_auxtrace)) + return -EINVAL; + offset += event->header.size; + return session->auxtrace->queue_data(session, NULL, event, + offset); + } + + if (!qd->samples || event->header.type != PERF_RECORD_SAMPLE) + return 0; + + err = perf_evlist__parse_sample(session->evlist, event, &sample); + if (err) + return err; + + if (!sample.aux_sample.size) + return 0; + + offset += sample.aux_sample.data - (void *)event; + + return session->auxtrace->queue_data(session, &sample, NULL, offset); +} + +int auxtrace_queue_data(struct perf_session *session, bool samples, bool events) +{ + struct queue_data qd = { + .samples = samples, + .events = events, + }; + + if (auxtrace__dont_decode(session)) + return 0; + + if (!session->auxtrace || !session->auxtrace->queue_data) + return -EINVAL; + + return perf_session__peek_events(session, session->header.data_offset, + session->header.data_size, + auxtrace_queue_data_cb, &qd); +} + void *auxtrace_buffer__get_data(struct auxtrace_buffer *buffer, int fd) { size_t adj = buffer->data_offset & (page_size - 1); diff --git a/tools/perf/util/auxtrace.h b/tools/perf/util/auxtrace.h index 4a8ac7de6e22..749d72cd9c7b 100644 --- a/tools/perf/util/auxtrace.h +++ b/tools/perf/util/auxtrace.h @@ -141,6 +141,8 @@ struct auxtrace_index { * struct auxtrace - session callbacks to allow AUX area data decoding. * @process_event: lets the decoder see all session events * @process_auxtrace_event: process a PERF_RECORD_AUXTRACE event + * @queue_data: queue an AUX sample or PERF_RECORD_AUXTRACE event for later + * processing * @dump_auxtrace_sample: dump AUX area sample data * @flush_events: process any remaining data * @free_events: free resources associated with event processing @@ -154,6 +156,9 @@ struct auxtrace { int (*process_auxtrace_event)(struct perf_session *session, union perf_event *event, struct perf_tool *tool); + int (*queue_data)(struct perf_session *session, + struct perf_sample *sample, union perf_event *event, + u64 data_offset); void (*dump_auxtrace_sample)(struct perf_session *session, struct perf_sample *sample); int (*flush_events)(struct perf_session *session, @@ -467,9 +472,19 @@ int auxtrace_queues__add_event(struct auxtrace_queues *queues, struct perf_session *session, union perf_event *event, off_t data_offset, struct auxtrace_buffer **buffer_ptr); +struct auxtrace_queue * +auxtrace_queues__sample_queue(struct auxtrace_queues *queues, + struct perf_sample *sample, + struct perf_session *session); +int auxtrace_queues__add_sample(struct auxtrace_queues *queues, + struct perf_session *session, + struct perf_sample *sample, u64 data_offset, + u64 reference); void auxtrace_queues__free(struct auxtrace_queues *queues); int auxtrace_queues__process_index(struct auxtrace_queues *queues, struct perf_session *session); +int auxtrace_queue_data(struct perf_session *session, bool samples, + bool events); struct auxtrace_buffer *auxtrace_buffer__next(struct auxtrace_queue *queue, struct auxtrace_buffer *buffer); void *auxtrace_buffer__get_data(struct auxtrace_buffer *buffer, int fd); |