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| author | Peter Zijlstra <a.p.zijlstra@chello.nl> | 2009-06-24 21:12:48 +0200 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2009-06-25 21:39:08 +0200 |
| commit | 649c48a9e7fafcc72bfcc99471d9dea98d789d59 (patch) | |
| tree | 0e1e17e3c4f23d5238d650df87e16567f0e6bfb7 /tools/perf/builtin-record.c | |
| parent | e6e18ec79b023d5fe84226cef533cf0e3770ce93 (diff) | |
| download | lwn-649c48a9e7fafcc72bfcc99471d9dea98d789d59.tar.gz lwn-649c48a9e7fafcc72bfcc99471d9dea98d789d59.zip | |
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.c | 19 |
1 files changed, 17 insertions, 2 deletions
diff --git a/tools/perf/builtin-record.c b/tools/perf/builtin-record.c index f4f0240d2302..798a56d890e5 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() }; |