Allow to allocate multiple reader objects, so we could load multiple
data files located in data directory at the same time.
Design and implementation are based on the prototype [1], [2].
[1] git clone https://git.kernel.org/pub/scm/linux/kernel/git/jolsa/perf.git -b perf/record_threads
[2] https://lore.kernel.org/lkml/[email protected]/
Suggested-by: Jiri Olsa <[email protected]>
Signed-off-by: Alexey Bayduraev <[email protected]>
---
tools/perf/util/session.c | 33 +++++++++++++++++++++------------
tools/perf/util/session.h | 3 +++
2 files changed, 24 insertions(+), 12 deletions(-)
diff --git a/tools/perf/util/session.c b/tools/perf/util/session.c
index d9ba87a754be..335c073bae87 100644
--- a/tools/perf/util/session.c
+++ b/tools/perf/util/session.c
@@ -342,6 +342,10 @@ void perf_session__delete(struct perf_session *session)
auxtrace_index__free(&session->auxtrace_index);
perf_session__destroy_kernel_maps(session);
perf_session__delete_threads(session);
+ if (session->readers) {
+ zfree(&session->readers);
+ session->nr_readers = 0;
+ }
perf_session__release_decomp_events(session);
perf_env__exit(&session->header.env);
machines__exit(&session->machines);
@@ -2298,14 +2302,7 @@ static s64 process_simple(struct perf_session *session,
static int __perf_session__process_events(struct perf_session *session)
{
- struct reader rd = {
- .fd = perf_data__fd(session->data),
- .data_size = session->header.data_size,
- .data_offset = session->header.data_offset,
- .process = process_simple,
- .path = session->data->file.path,
- .in_place_update = session->data->in_place_update,
- };
+ struct reader *rd;
struct ordered_events *oe = &session->ordered_events;
struct perf_tool *tool = session->tool;
struct ui_progress prog;
@@ -2313,12 +2310,24 @@ static int __perf_session__process_events(struct perf_session *session)
perf_tool__fill_defaults(tool);
- if (rd.data_size == 0)
- return -1;
+ rd = session->readers = zalloc(sizeof(struct reader));
+ if (!rd)
+ return -ENOMEM;
+
+ session->nr_readers = 1;
+
+ *rd = (struct reader) {
+ .fd = perf_data__fd(session->data),
+ .data_size = session->header.data_size,
+ .data_offset = session->header.data_offset,
+ .process = process_simple,
+ .path = session->data->file.path,
+ .in_place_update = session->data->in_place_update,
+ };
- ui_progress__init_size(&prog, rd.data_size, "Processing events...");
+ ui_progress__init_size(&prog, rd->data_size, "Processing events...");
- err = reader__process_events(&rd, session, &prog);
+ err = reader__process_events(rd, session, &prog);
if (err)
goto out_err;
/* do the final flush for ordered samples */
diff --git a/tools/perf/util/session.h b/tools/perf/util/session.h
index 6895a22ab5b7..2815d00b5467 100644
--- a/tools/perf/util/session.h
+++ b/tools/perf/util/session.h
@@ -19,6 +19,7 @@ struct thread;
struct auxtrace;
struct itrace_synth_opts;
+struct reader;
struct perf_session {
struct perf_header header;
@@ -41,6 +42,8 @@ struct perf_session {
struct zstd_data zstd_data;
struct decomp *decomp;
struct decomp *decomp_last;
+ struct reader *readers;
+ int nr_readers;
};
struct decomp {
--
2.19.0