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Commit 649c48a9 authored by Peter Zijlstra's avatar Peter Zijlstra Committed by Ingo Molnar
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perf-report: Add modes for inherited stats and no-samples 



Now that we can collect per task statistics, add modes that
make use of that facility.

Signed-off-by: default avatarPeter Zijlstra <a.p.zijlstra@chello.nl>
LKML-Reference: <new-submission>
Signed-off-by: default avatarIngo Molnar <mingo@elte.hu>
parent e6e18ec7

tools/perf/builtin-record.c

+17 −2
Original line number Diff line number Diff line
@@ -41,6 +41,8 @@ static int force = 0; 
static int			append_file			= 0;

static int			call_graph			= 0;

static int			verbose				= 0;

static int			inherit_stat			= 0;

static int			no_samples			= 0;



static long			samples;

static struct timeval		last_read;
@@ -393,6 +395,12 @@ static void create_counter(int counter, int cpu, pid_t pid) 
		attr->sample_freq	= freq;

	}



	if (no_samples)

		attr->sample_freq = 0;



	if (inherit_stat)

		attr->inherit_stat = 1;



	if (call_graph)

		attr->sample_type	|= PERF_SAMPLE_CALLCHAIN;
@@ -571,7 +579,7 @@ static int __cmd_record(int argc, const char **argv) 
		}

	}



	while (!done) {

	for (;;) {

		int hits = samples;



		for (i = 0; i < nr_cpu; i++) {
@@ -579,9 +587,12 @@ static int __cmd_record(int argc, const char **argv) 
				mmap_read(&mmap_array[i][counter]);

		}



		if (hits == samples)

		if (hits == samples) {

			if (done)

				break;

			ret = poll(event_array, nr_poll, 100);

		}

	}



	/*

	 * Approximate RIP event size: 24 bytes.
@@ -629,6 +640,10 @@ static const struct option options[] = { 
		    "do call-graph (stack chain/backtrace) recording"),

	OPT_BOOLEAN('v', "verbose", &verbose,

		    "be more verbose (show counter open errors, etc)"),

	OPT_BOOLEAN('s', "stat", &inherit_stat,

		    "per thread counts"),

	OPT_BOOLEAN('n', "no-samples", &no_samples,

		    "don't sample"),

	OPT_END()

};