Donate to e Foundation | Murena handsets with /e/OS | Own a part of Murena! Learn more

Commit e51f8061 authored by Jiri Olsa's avatar Jiri Olsa Committed by Arnaldo Carvalho de Melo
Browse files

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: default avatarJiri 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: default avatarArnaldo Carvalho de Melo <acme@redhat.com>
parent 258031c0

tools/perf/util/session.c

+19 −4
Original line number Diff line number Diff line
@@ -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;

	reader_cb_t	 process;

};



static int
@@ -1921,7 +1928,7 @@ reader__process_events(struct reader *rd, struct perf_session *session, 
	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 @@ reader__process_events(struct reader *rd, struct perf_session *session, 
	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;