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: Peter Zijlstra <a.p.zijlstra@chello.nl>
LKML-Reference: <new-submission>
Signed-off-by: Ingo Molnar <mingo@elte.hu>

diff --git a/tools/perf/builtin-record.c b/tools/perf/builtin-record.c
index f4f0240d2302a4b38f86edf97c24655b77ff338c..798a56d890e5ecb59ebd401cf5a7fad8baa77b0d 100644 (file)
--- a/tools/perf/builtin-record.c
+++ b/tools/perf/builtin-record.c
@@ -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++) {
@@ -579,8 +587,11 @@ 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);
+               }
        }
 
        /*
@@ -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()
 };