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Commit 97b07b69 authored by Ingo Molnar's avatar Ingo Molnar
Browse files

perf report: add --dump-raw-trace option 



To help the inspection of various data files, implement an ASCII dump
method that just dumps the records as they are read in - then we exit.

[ Impact: new feature ]

Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Corey Ashford <cjashfor@linux.vnet.ibm.com>
Cc: Marcelo Tosatti <mtosatti@redhat.com>
Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: John Kacur <jkacur@redhat.com>
LKML-Reference: <new-submission>
Signed-off-by: default avatarIngo Molnar <mingo@elte.hu>
parent abd54f68

Documentation/perf_counter/builtin-report.c

+38 −1
Original line number Diff line number Diff line
@@ -20,6 +20,8 @@ static char const *input_name = "output.perf"; 
static int		input;

static int		show_mask = SHOW_KERNEL | SHOW_USER | SHOW_HV;



static int		dump_trace = 0;



static unsigned long	page_size;

static unsigned long	mmap_window = 32;
@@ -643,7 +645,7 @@ static int __cmd_report(void) 
	char *buf;

	event_t *event;

	int ret, rc = EXIT_FAILURE;

	unsigned long total = 0;

	unsigned long total = 0, total_mmap = 0, total_comm = 0;



	input = open(input_name, O_RDONLY);

	if (input < 0) {
@@ -706,6 +708,13 @@ static int __cmd_report(void) 
		struct thread *thread = threads__findnew(event->ip.pid);

		uint64_t ip = event->ip.ip;



		if (dump_trace) {

			fprintf(stderr, "PERF_EVENT (IP, %d): %d: %p\n",

				event->header.misc,

				event->ip.pid,

				(void *)event->ip.ip);

		}



		if (thread == NULL) {

			fprintf(stderr, "problem processing %d event, bailing out\n",

				event->header.type);
@@ -743,23 +752,40 @@ static int __cmd_report(void) 
		struct thread *thread = threads__findnew(event->mmap.pid);

		struct map *map = map__new(&event->mmap);



		if (dump_trace) {

			fprintf(stderr, "PERF_EVENT_MMAP: [%p(%p) @ %p]: %s\n",

				(void *)event->mmap.start,

				(void *)event->mmap.len,

				(void *)event->mmap.pgoff,

				event->mmap.filename);

		}

		if (thread == NULL || map == NULL) {

			fprintf(stderr, "problem processing PERF_EVENT_MMAP, bailing out\n");

			goto done;

		}

		thread__insert_map(thread, map);

		total_mmap++;

		break;

	}

	case PERF_EVENT_COMM: {

		struct thread *thread = threads__findnew(event->comm.pid);



		if (dump_trace) {

			fprintf(stderr, "PERF_EVENT_COMM: %s:%d\n",

				event->comm.comm, event->comm.pid);

		}

		if (thread == NULL ||

		    thread__set_comm(thread, event->comm.comm)) {

			fprintf(stderr, "problem processing PERF_EVENT_COMM, bailing out\n");

			goto done;

		}

		total_comm++;

		break;

	}

	default: {

		fprintf(stderr, "skipping unknown header type: %d\n",

			event->header.type);

	}

	}



	if (offset + head < stat.st_size)
@@ -768,6 +794,15 @@ static int __cmd_report(void) 
	rc = EXIT_SUCCESS;

done:

	close(input);



	if (dump_trace) {

		fprintf(stderr, "   IP events: %10ld\n", total);

		fprintf(stderr, " mmap events: %10ld\n", total_mmap);

		fprintf(stderr, " comm events: %10ld\n", total_comm);



		return 0;

	}



	//dsos__fprintf(stdout);

	threads__fprintf(stdout);

#if 0
@@ -796,6 +831,8 @@ static const char * const report_usage[] = { 
static const struct option options[] = {

	OPT_STRING('i', "input", &input_name, "file",

		    "input file name"),

	OPT_BOOLEAN('D', "dump-raw-trace", &dump_trace,

		    "dump raw trace in ASCII"),

	OPT_END()

};