On Mon, Mar 15, 2021 at 10:30:47PM +0800, Changbin Du wrote: SNIP
> diff --git a/tools/perf/util/stat-shadow.c b/tools/perf/util/stat-shadow.c > index 6ccf21a72f06..3f800e71126f 100644 > --- a/tools/perf/util/stat-shadow.c > +++ b/tools/perf/util/stat-shadow.c > @@ -9,6 +9,7 @@ > #include "expr.h" > #include "metricgroup.h" > #include "cgroup.h" > +#include "units.h" > #include <linux/zalloc.h> > > /* > @@ -1270,18 +1271,15 @@ void perf_stat__print_shadow_stats(struct > perf_stat_config *config, > generic_metric(config, evsel->metric_expr, > evsel->metric_events, NULL, > evsel->name, evsel->metric_name, NULL, 1, cpu, > out, st); > } else if (runtime_stat_n(st, STAT_NSECS, cpu, &rsd) != 0) { > - char unit = 'M'; > - char unit_buf[10]; > + char unit = ' '; > + char unit_buf[10] = "/sec"; > > total = runtime_stat_avg(st, STAT_NSECS, cpu, &rsd); > - > if (total) > - ratio = 1000.0 * avg / total; > - if (ratio < 0.001) { > - ratio *= 1000; > - unit = 'K'; > - } > - snprintf(unit_buf, sizeof(unit_buf), "%c/sec", unit); > + ratio = convert_unit_double(1000000000.0 * avg / total, > &unit); > + > + if (unit != ' ') > + snprintf(unit_buf, sizeof(unit_buf), "%c/sec", unit); > print_metric(config, ctxp, NULL, "%8.3f", unit_buf, ratio); hum, does this still change the metric unit in the csv output? 'perf -a -x,' jirka > } else if (perf_stat_evsel__is(evsel, SMI_NUM)) { > print_smi_cost(config, cpu, out, st, &rsd); > diff --git a/tools/perf/util/units.c b/tools/perf/util/units.c > index a46762aec4c9..32c39cfe209b 100644 > --- a/tools/perf/util/units.c > +++ b/tools/perf/util/units.c SNIP