luck/tmp_suning_uos_patched
1
0
Fork 1
Code Issues Pull Requests Packages Projects Releases Wiki Activity

perf-report: Add modes for inherited stats and no-samples

Browse Source 
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>
This commit is contained in:
Peter Zijlstra 2009-06-24 21:12:48 +02:00 committed by Ingo Molnar
parent e6e18ec79b
commit 649c48a9e7
1 changed files with 17 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

19
tools/perf/builtin-record.c
View File

@ -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()
};