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Commit 73f75fb1 authored by Adrian Hunter's avatar Adrian Hunter Committed by Arnaldo Carvalho de Melo
Browse files

perf auxtrace: Add processing for AUX area tracing events 



Provide hooks so that an AUX area decoder can process AUX area tracing
events.

Signed-off-by: default avatarAdrian Hunter <adrian.hunter@intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Namhyung Kim <namhyung@gmail.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
Link: http://lkml.kernel.org/r/1428594864-29309-14-git-send-email-adrian.hunter@intel.com


Signed-off-by: default avatarArnaldo Carvalho de Melo <acme@redhat.com>
parent f9397155

tools/perf/util/auxtrace.c

+51 −1
Original line number Diff line number Diff line
@@ -615,6 +615,53 @@ out_free: 
	return err;

}



static bool auxtrace__dont_decode(struct perf_session *session)

{

	return !session->itrace_synth_opts ||

	       session->itrace_synth_opts->dont_decode;

}



int perf_event__process_auxtrace_info(struct perf_tool *tool __maybe_unused,

				      union perf_event *event,

				      struct perf_session *session __maybe_unused)

{

	enum auxtrace_type type = event->auxtrace_info.type;



	if (dump_trace)

		fprintf(stdout, " type: %u\n", type);



	switch (type) {

	case PERF_AUXTRACE_UNKNOWN:

	default:

		return -EINVAL;

	}

}



s64 perf_event__process_auxtrace(struct perf_tool *tool,

				 union perf_event *event,

				 struct perf_session *session)

{

	s64 err;



	if (dump_trace)

		fprintf(stdout, " size: %#"PRIx64"  offset: %#"PRIx64"  ref: %#"PRIx64"  idx: %u  tid: %d  cpu: %d\n",

			event->auxtrace.size, event->auxtrace.offset,

			event->auxtrace.reference, event->auxtrace.idx,

			event->auxtrace.tid, event->auxtrace.cpu);



	if (auxtrace__dont_decode(session))

		return event->auxtrace.size;



	if (!session->auxtrace || event->header.type != PERF_RECORD_AUXTRACE)

		return -EINVAL;



	err = session->auxtrace->process_auxtrace_event(session, event, tool);

	if (err < 0)

		return err;



	return event->auxtrace.size;

}



#define PERF_ITRACE_DEFAULT_PERIOD_TYPE		PERF_ITRACE_PERIOD_NANOSECS

#define PERF_ITRACE_DEFAULT_PERIOD		100000

#define PERF_ITRACE_DEFAULT_CALLCHAIN_SZ	16
@@ -801,8 +848,11 @@ void events_stats__auxtrace_error_warn(const struct events_stats *stats) 


int perf_event__process_auxtrace_error(struct perf_tool *tool __maybe_unused,

				       union perf_event *event,

				       struct perf_session *session __maybe_unused)

				       struct perf_session *session)

{

	if (auxtrace__dont_decode(session))

		return 0;



	perf_event__fprintf_auxtrace_error(event, stdout);

	return 0;

}

tools/perf/util/auxtrace.h

+13 −0
Original line number Diff line number Diff line
@@ -36,6 +36,10 @@ struct record_opts; 
struct auxtrace_info_event;

struct events_stats;



enum auxtrace_type {

	PERF_AUXTRACE_UNKNOWN,

};



enum itrace_period_type {

	PERF_ITRACE_PERIOD_INSTRUCTIONS,

	PERF_ITRACE_PERIOD_TICKS,
@@ -87,6 +91,9 @@ struct auxtrace { 
			     union perf_event *event,

			     struct perf_sample *sample,

			     struct perf_tool *tool);

	int (*process_auxtrace_event)(struct perf_session *session,

				      union perf_event *event,

				      struct perf_tool *tool);

	int (*flush_events)(struct perf_session *session,

			    struct perf_tool *tool);

	void (*free_events)(struct perf_session *session);
@@ -348,6 +355,12 @@ int perf_event__synthesize_auxtrace_info(struct auxtrace_record *itr, 
					 struct perf_tool *tool,

					 struct perf_session *session,

					 perf_event__handler_t process);

int perf_event__process_auxtrace_info(struct perf_tool *tool,

				      union perf_event *event,

				      struct perf_session *session);

s64 perf_event__process_auxtrace(struct perf_tool *tool,

				 union perf_event *event,

				 struct perf_session *session);

int perf_event__process_auxtrace_error(struct perf_tool *tool,

				       union perf_event *event,

				       struct perf_session *session);