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perf session: Add process callback to reader object 

Adding callback function to reader object so callers can process data in
different ways.

Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Alexey Budankov <alexey.budankov@linux.intel.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
Link: http://lkml.kernel.org/r/20190308134745.5057-7-jolsa@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
This commit is contained in:
Jiri Olsa 2019-03-08 14:47:40 +01:00 committed by Arnaldo Carvalho de Melo
parent 258031c017
commit e51f806198
1 changed files with 19 additions and 4 deletions
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23
tools/perf/util/session.c
View File

@ -1847,10 +1847,17 @@ fetch_mmaped_event(struct perf_session *session,
#define NUM_MMAPS 128
#endif
struct reader;
typedef s64 (*reader_cb_t)(struct perf_session *session,
union perf_event *event,
u64 file_offset);
struct reader {
int fd;
u64 data_size;
u64 data_offset;
int fd;
u64 data_size;
u64 data_offset;
reader_cb_t process;
};
static int
@ -1921,7 +1928,7 @@ more:
size = event->header.size;
if (size < sizeof(struct perf_event_header) ||
(skip = perf_session__process_event(session, event, file_pos)) < 0) {
(skip = rd->process(session, event, file_pos)) < 0) {
pr_err("%#" PRIx64 " [%#x]: failed to process type: %d\n",
file_offset + head, event->header.size,
event->header.type);
@ -1947,12 +1954,20 @@ out:
return err;
}
static s64 process_simple(struct perf_session *session,
union perf_event *event,
u64 file_offset)
{
return perf_session__process_event(session, event, file_offset);
}
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,
};
struct ordered_events *oe = &session->ordered_events;
struct perf_tool *tool = session->tool;