[PATCH v5 06/16] perf kvm: Introduce histograms data structures

Leo Yan
2023-03-15T14:52:49Z

This is a preparation to support histograms in perf kvm tool. As first
step, this patch defines histograms data structures and initialize them.

Signed-off-by: Leo Yan <leo.yan@linaro.org>
Reviewed-by: James Clark <james.clark@arm.com>
---
tools/perf/builtin-kvm.c | 18 ++++++++++++++++++
tools/perf/util/kvm-stat.h | 1 +
2 files changed, 19 insertions(+)

diff --git a/tools/perf/builtin-kvm.c b/tools/perf/builtin-kvm.c
index d400434aa137..384992c8a01a 100644
--- a/tools/perf/builtin-kvm.c
+++ b/tools/perf/builtin-kvm.c
@@ -85,6 +85,20 @@ static struct kvm_event_key keys[] = {
{ NULL, NULL }
};

+struct kvm_hists {
+ struct hists hists;
+ struct perf_hpp_list list;
+};
+
+static struct kvm_hists kvm_hists;
+
+static int kvm_hists__init(void)
+{
+ __hists__init(&kvm_hists.hists, &kvm_hists.list);
+ perf_hpp_list__init(&kvm_hists.list);
+ return 0;
+}
+
static const char *get_filename_for_perf_kvm(void)
{
const char *filename;
@@ -957,6 +971,8 @@ static int kvm_events_live_report(struct perf_kvm_stat *kvm)
set_term_quiet_input(&save);
init_kvm_event_record(kvm);

+ kvm_hists__init();
+
signal(SIGINT, sig_handler);
signal(SIGTERM, sig_handler);

@@ -1152,6 +1168,8 @@ static int kvm_events_report_vcpu(struct perf_kvm_stat *kvm)
init_kvm_event_record(kvm);
setup_pager();

+ kvm_hists__init();
+
ret = read_events(kvm);
if (ret)
goto exit;
diff --git a/tools/perf/util/kvm-stat.h b/tools/perf/util/kvm-stat.h
index 841b3174c211..e2c17662bac7 100644
--- a/tools/perf/util/kvm-stat.h
+++ b/tools/perf/util/kvm-stat.h
@@ -5,6 +5,7 @@
#ifdef HAVE_KVM_STAT_SUPPORT

#include "tool.h"
+#include "sort.h"
#include "stat.h"
#include "record.h"

--
2.34.1