From: Kan Liang <kan.li...@intel.com>
Caculate the total overhead from accessing side-band events handler
function, and display them in perf report
Signed-off-by: Kan Liang <kan.li...@intel.com>
---
tools/perf/builtin-report.c | 3 +++
tools/perf/util/event.h | 5 +++++
tools/perf/util/machine.c | 5 +++++
tools/perf/util/session.c | 4 ++++
4 files changed, 17 insertions(+)
diff --git a/tools/perf/builtin-report.c b/tools/perf/builtin-report.c
index 2515d7a..9c0a424 100644
--- a/tools/perf/builtin-report.c
+++ b/tools/perf/builtin-report.c
@@ -384,6 +384,9 @@ static int perf_evlist__tty_browse_hists(struct perf_evlist
*evlist,
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, "#\t\tSB#: %" PRIu64 " time: %" PRIu64
" ns\n",
+ evlist->stats.total_sb_overhead[cpu][0],
+ evlist->stats.total_sb_overhead[cpu][1]);
}
fprintf(stdout, "#\n");
}
diff --git a/tools/perf/util/event.h b/tools/perf/util/event.h
index 70e2508..3357529 100644
--- a/tools/perf/util/event.h
+++ b/tools/perf/util/event.h
@@ -267,6 +267,10 @@ enum auxtrace_error_type {
* 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].
+ * The total_sb_overhead tells exactly the overhead to output side-band
+ * events on each CPU.
+ * The total number of accessing side-band events handler function is stored
+ * in [0], while the accumulated processing time is in [1].
*/
struct events_stats {
u64 total_period;
@@ -277,6 +281,7 @@ struct events_stats {
u64 total_invalid_chains;
u64 total_nmi_overhead[MAX_NR_CPUS][2];
u64 total_mux_overhead[MAX_NR_CPUS][2];
+ u64 total_sb_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 eca1f8b..d8cde21 100644
--- a/tools/perf/util/machine.c
+++ b/tools/perf/util/machine.c
@@ -568,6 +568,11 @@ 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_SB_OVERHEAD) {
+ dump_printf(" SB 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 594fd5e..e3aa9d7 100644
--- a/tools/perf/util/session.c
+++ b/tools/perf/util/session.c
@@ -1222,6 +1222,10 @@ overhead_stats_update(struct perf_tool *tool,
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;
+ case PERF_SB_OVERHEAD:
+
evlist->stats.total_sb_overhead[event->overhead.entry.cpu][0] +=
event->overhead.entry.nr;
+
evlist->stats.total_sb_overhead[event->overhead.entry.cpu][1] +=
event->overhead.entry.time;
+ break;
default:
break;
}
--
2.5.5
