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Date: Wed, 23 Nov 2016 04:44:45 -0500
From: kan.liang@...el.com
To: peterz@...radead.org, mingo@...hat.com, acme@...nel.org,
linux-kernel@...r.kernel.org
Cc: alexander.shishkin@...ux.intel.com, tglx@...utronix.de,
namhyung@...nel.org, jolsa@...nel.org, adrian.hunter@...el.com,
wangnan0@...wei.com, mark.rutland@....com, andi@...stfloor.org,
Kan Liang <kan.liang@...el.com>
Subject: [PATCH 07/14] perf tools: show multiplexing overhead
From: Kan Liang <kan.liang@...el.com>
Caculate the total multiplexing overhead on each CPU, and display them
in perf report
Signed-off-by: Kan Liang <kan.liang@...el.com>
---
tools/perf/builtin-report.c | 8 ++++++--
tools/perf/util/event.h | 3 +++
tools/perf/util/machine.c | 5 +++++
tools/perf/util/session.c | 4 ++++
4 files changed, 18 insertions(+), 2 deletions(-)
diff --git a/tools/perf/builtin-report.c b/tools/perf/builtin-report.c
index b1437586..2515d7a 100644
--- a/tools/perf/builtin-report.c
+++ b/tools/perf/builtin-report.c
@@ -377,9 +377,13 @@ static int perf_evlist__tty_browse_hists(struct perf_evlist *evlist,
continue;
if (rep->cpu_list && !test_bit(cpu, rep->cpu_bitmap))
continue;
- fprintf(stdout, "#\tCPU %d: NMI#: %" PRIu64 " time: %" PRIu64 " ns\n",
- cpu, evlist->stats.total_nmi_overhead[cpu][0],
+ fprintf(stdout, "#\tCPU %d\n", cpu);
+ fprintf(stdout, "#\t\tNMI#: %" PRIu64 " time: %" PRIu64 " ns\n",
+ evlist->stats.total_nmi_overhead[cpu][0],
evlist->stats.total_nmi_overhead[cpu][1]);
+ fprintf(stdout, "#\t\tMultiplexing#: %" PRIu64 " time: %" PRIu64 " ns\n",
+ evlist->stats.total_mux_overhead[cpu][0],
+ evlist->stats.total_mux_overhead[cpu][1]);
}
fprintf(stdout, "#\n");
}
diff --git a/tools/perf/util/event.h b/tools/perf/util/event.h
index 7d40d54..70e2508 100644
--- a/tools/perf/util/event.h
+++ b/tools/perf/util/event.h
@@ -265,6 +265,8 @@ enum auxtrace_error_type {
*
* The total_nmi_overhead tells exactly the NMI handler overhead on each CPU.
* The total NMI# is stored in [0], while the accumulated time is in [1].
+ * The total_mux_overhead tells exactly the Multiplexing overhead on each CPU.
+ * The total rotate# is stored in [0], while the accumulated time is in [1].
*/
struct events_stats {
u64 total_period;
@@ -274,6 +276,7 @@ struct events_stats {
u64 total_aux_lost;
u64 total_invalid_chains;
u64 total_nmi_overhead[MAX_NR_CPUS][2];
+ u64 total_mux_overhead[MAX_NR_CPUS][2];
u32 nr_events[PERF_RECORD_HEADER_MAX];
u32 nr_non_filtered_samples;
u32 nr_lost_warned;
diff --git a/tools/perf/util/machine.c b/tools/perf/util/machine.c
index 58076f2..eca1f8b 100644
--- a/tools/perf/util/machine.c
+++ b/tools/perf/util/machine.c
@@ -563,6 +563,11 @@ int machine__process_overhead_event(struct machine *machine __maybe_unused,
event->overhead.entry.nr,
event->overhead.entry.time,
event->overhead.entry.cpu);
+ } else if (event->overhead.type == PERF_MUX_OVERHEAD) {
+ dump_printf(" Multiplexing nr: %llu time: %llu cpu %u\n",
+ event->overhead.entry.nr,
+ event->overhead.entry.time,
+ event->overhead.entry.cpu);
} else {
dump_printf("\tUNSUPPORT OVERHEAD TYPE 0x%x!\n", event->overhead.type);
}
diff --git a/tools/perf/util/session.c b/tools/perf/util/session.c
index a79ab99..594fd5e 100644
--- a/tools/perf/util/session.c
+++ b/tools/perf/util/session.c
@@ -1218,6 +1218,10 @@ overhead_stats_update(struct perf_tool *tool,
evlist->stats.total_nmi_overhead[event->overhead.entry.cpu][0] += event->overhead.entry.nr;
evlist->stats.total_nmi_overhead[event->overhead.entry.cpu][1] += event->overhead.entry.time;
break;
+ case PERF_MUX_OVERHEAD:
+ evlist->stats.total_mux_overhead[event->overhead.entry.cpu][0] += event->overhead.entry.nr;
+ evlist->stats.total_mux_overhead[event->overhead.entry.cpu][1] += event->overhead.entry.time;
+ break;
default:
break;
}
--
2.5.5
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