From 2d08124b08631322303e365d422ead50ae1674b8 Mon Sep 17 00:00:00 2001
From: Leo Yan <leo.yan@linaro.org>
Date: Wed, 15 Mar 2023 22:51:02 +0800
Subject: [PATCH] perf kvm: Introduce histograms data structures
This is a preparation to support histograms in perf kvm tool. As first
step, this patch defines histograms data structures and initialize them.
Committer notes:
Those are only used by functions enclosed in:
#if efined(HAVE_KVM_STAT_SUPPORT) && defined(HAVE_LIBTRACEEVENT)
So do this for these new functions and struct as well.
Reviewed-by: James Clark <james.clark@arm.com>
Signed-off-by: Leo Yan <leo.yan@linaro.org>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Ian Rogers <irogers@google.com>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: John Garry <john.g.garry@oracle.com>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: linux-arm-kernel@lists.infradead.org
Link: https://lore.kernel.org/r/20230315145112.186603-2-leo.yan@linaro.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.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 286faf6774ff8..b06c11d306a11 100644
--- a/tools/perf/builtin-kvm.c
+++ b/tools/perf/builtin-kvm.c
@@ -85,6 +85,20 @@ static struct kvm_event_key keys[] = {
DEF_SORT_NAME_KEY(time, mean),
{ 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;
+}
#endif // defined(HAVE_KVM_STAT_SUPPORT) && defined(HAVE_LIBTRACEEVENT)
static const char *get_filename_for_perf_kvm(void)
@@ -959,6 +973,8 @@ 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);
@@ -1154,6 +1170,8 @@ 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 841b3174c2117..e2c17662bac75 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"
--
2.30.2