Manipulating the sample_type of an evsel requires
the use of:
perf_evsel__set_sample_bit()
and perf_evsel__reset_sample_bit()
Manipulating the sample type of an evlist requires
the id position to be recalculated.
Signed-off-by: Adrian Hunter <adrian.hun...@intel.com>
---
tools/perf/builtin-kvm.c | 20 +++++++++++---------
1 file changed, 11 insertions(+), 9 deletions(-)
diff --git a/tools/perf/builtin-kvm.c b/tools/perf/builtin-kvm.c
index 47b3540..0b7c5a9 100644
--- a/tools/perf/builtin-kvm.c
+++ b/tools/perf/builtin-kvm.c
@@ -1165,16 +1165,16 @@ static int kvm_live_open_events(struct perf_kvm_stat
*kvm)
struct perf_event_attr *attr = &pos->attr;
/* make sure these *are* set */
- attr->sample_type |= PERF_SAMPLE_TID;
- attr->sample_type |= PERF_SAMPLE_TIME;
- attr->sample_type |= PERF_SAMPLE_CPU;
- attr->sample_type |= PERF_SAMPLE_RAW;
+ perf_evsel__set_sample_bit(pos, TID);
+ perf_evsel__set_sample_bit(pos, TIME);
+ perf_evsel__set_sample_bit(pos, CPU);
+ perf_evsel__set_sample_bit(pos, RAW);
/* make sure these are *not*; want as small a sample as
possible */
- attr->sample_type &= ~PERF_SAMPLE_PERIOD;
- attr->sample_type &= ~PERF_SAMPLE_IP;
- attr->sample_type &= ~PERF_SAMPLE_CALLCHAIN;
- attr->sample_type &= ~PERF_SAMPLE_ADDR;
- attr->sample_type &= ~PERF_SAMPLE_READ;
+ perf_evsel__reset_sample_bit(pos, PERIOD);
+ perf_evsel__reset_sample_bit(pos, IP);
+ perf_evsel__reset_sample_bit(pos, CALLCHAIN);
+ perf_evsel__reset_sample_bit(pos, ADDR);
+ perf_evsel__reset_sample_bit(pos, READ);
attr->mmap = 0;
attr->comm = 0;
attr->task = 0;
@@ -1188,6 +1188,8 @@ static int kvm_live_open_events(struct perf_kvm_stat *kvm)
attr->disabled = 1;
}
+ perf_evlist__set_id_pos(evlist);
+
err = perf_evlist__open(evlist);
if (err < 0) {
printf("Couldn't create the events: %s\n", strerror(errno));
--
1.7.11.7
--
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