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authorPeter Zijlstra <a.p.zijlstra@chello.nl>2009-06-24 21:12:48 +0200
committerIngo Molnar <mingo@elte.hu>2009-06-25 21:39:08 +0200
commit649c48a9e7fafcc72bfcc99471d9dea98d789d59 (patch)
tree0e1e17e3c4f23d5238d650df87e16567f0e6bfb7 /tools/perf/builtin-record.c
parente6e18ec79b023d5fe84226cef533cf0e3770ce93 (diff)
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>
Diffstat (limited to 'tools/perf/builtin-record.c')
-rw-r--r--tools/perf/builtin-record.c19
1 files changed, 17 insertions, 2 deletions
diff --git a/tools/perf/builtin-record.c b/tools/perf/builtin-record.c
index f4f0240d230..798a56d890e 100644
--- 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()
};