Commit-ID: 7f372a636d92e21d6fa41aebd6986ef590aefbfc
Gitweb: http://git.kernel.org/tip/7f372a636d92e21d6fa41aebd6986ef590aefbfc
Author: Andi Kleen <ak@xxxxxxxxxxxxxxx>
AuthorDate: Mon, 20 Mar 2017 13:17:09 -0700
Committer: Arnaldo Carvalho de Melo <acme@xxxxxxxxxx>
CommitDate: Thu, 23 Mar 2017 11:42:30 -0300
perf list: Support printing MetricExpr with --debug
Output the metric expr in perf list when --debug is specified, so that
the user can check the formula.
Before:
% perf list
...
unc_m_power_channel_ppd
[Cycles where DRAM ranks are in power down (CKE) mode. Derived from unc_m_power_channel_ppd. Unit:
uncore_imc]
uncore_imc_2/event=0x85/
After:
% perf list --debug
...
unc_m_power_channel_ppd
[Cycles where DRAM ranks are in power down (CKE) mode. Derived from unc_m_power_channel_ppd. Unit:
uncore_imc]
Perf: uncore_imc_2/event=0x85/ MetricExpr: (unc_m_power_channel_ppd / unc_m_clockticks) * 100.
Signed-off-by: Andi Kleen <ak@xxxxxxxxxxxxxxx>
Acked-by: Jiri Olsa <jolsa@xxxxxxxxxx>
Link: http://lkml.kernel.org/r/20170320201711.14142-12-andi@xxxxxxxxxxxxxx
Signed-off-by: Arnaldo Carvalho de Melo <acme@xxxxxxxxxx>
---
tools/perf/util/pmu.c | 10 ++++++++--
1 file changed, 8 insertions(+), 2 deletions(-)
diff --git a/tools/perf/util/pmu.c b/tools/perf/util/pmu.c
index 0f1133a..f819ad1 100644
--- a/tools/perf/util/pmu.c
+++ b/tools/perf/util/pmu.c
@@ -1105,6 +1105,7 @@ struct sevent {
char *topic;
char *str;
char *pmu;
+ char *metric_expr;
};
static int cmp_sevent(const void *a, const void *b)
@@ -1203,6 +1204,7 @@ void print_pmu_events(const char *event_glob, bool name_only, bool quiet_flag,
aliases[j].topic = alias->topic;
aliases[j].str = alias->str;
aliases[j].pmu = pmu->name;
+ aliases[j].metric_expr = alias->metric_expr;
j++;
}
if (pmu->selectable &&
@@ -1237,8 +1239,12 @@ void print_pmu_events(const char *event_glob, bool name_only, bool quiet_flag,
printf("%*s", 8, "[");
wordwrap(aliases[j].desc, 8, columns, 0);
printf("]\n");
- if (verbose > 0)
- printf("%*s%s/%s/\n", 8, "", aliases[j].pmu, aliases[j].str);
+ if (verbose > 0) {
+ printf("%*s%s/%s/ ", 8, "", aliases[j].pmu, aliases[j].str);
+ if (aliases[j].metric_expr)
+ printf(" MetricExpr: %s", aliases[j].metric_expr);
+ putchar('\n');
+ }
} else
printf(" %-50s [Kernel PMU event]\n", aliases[j].name);
printed++;
--
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