linux-kernel - [PATCH v5 08/16] perf kvm: Parse address location for samples

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Date:   Wed, 15 Mar 2023 22:51:04 +0800
From:   Leo Yan <leo.yan@...aro.org>
To:     Arnaldo Carvalho de Melo <acme@...nel.org>,
        Jiri Olsa <jolsa@...nel.org>,
        Namhyung Kim <namhyung@...nel.org>,
        Ian Rogers <irogers@...gle.com>,
        John Garry <john.g.garry@...cle.com>,
        James Clark <james.clark@....com>,
        Adrian Hunter <adrian.hunter@...el.com>,
        Peter Zijlstra <peterz@...radead.org>,
        Ingo Molnar <mingo@...hat.com>,
        Mark Rutland <mark.rutland@....com>,
        Alexander Shishkin <alexander.shishkin@...ux.intel.com>,
        linux-perf-users@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org
Cc:     Leo Yan <leo.yan@...aro.org>
Subject: [PATCH v5 08/16] perf kvm: Parse address location for samples

Parse address location for samples and save it into the structure
'perf_kvm_stat', it is to be used by histograms entry.

Signed-off-by: Leo Yan <leo.yan@...aro.org>
Reviewed-by: James Clark <james.clark@....com>
---
 tools/perf/builtin-kvm.c   | 5 +++++
 tools/perf/util/kvm-stat.h | 4 ++++
 2 files changed, 9 insertions(+)

diff --git a/tools/perf/builtin-kvm.c b/tools/perf/builtin-kvm.c
index 5ea723fd45a4..fa91c8deb628 100644
--- a/tools/perf/builtin-kvm.c
+++ b/tools/perf/builtin-kvm.c
@@ -704,6 +704,11 @@ static int process_sample_event(struct perf_tool *tool,
 	if (skip_sample(kvm, sample))
 		return 0;
 
+	if (machine__resolve(machine, &kvm->al, sample) < 0) {
+		pr_warning("Fail to resolve address location, skip sample.\n");
+		return 0;
+	}
+
 	thread = machine__findnew_thread(machine, sample->pid, sample->tid);
 	if (thread == NULL) {
 		pr_debug("problem processing %d event, skipping it.\n",
diff --git a/tools/perf/util/kvm-stat.h b/tools/perf/util/kvm-stat.h
index e2c17662bac7..3b2eab91a9be 100644
--- a/tools/perf/util/kvm-stat.h
+++ b/tools/perf/util/kvm-stat.h
@@ -7,6 +7,7 @@
 #include "tool.h"
 #include "sort.h"
 #include "stat.h"
+#include "symbol.h"
 #include "record.h"
 
 #define KVM_EVENT_NAME_LEN	40
@@ -88,6 +89,9 @@ struct perf_kvm_stat {
 	const char *sort_key;
 	int trace_vcpu;
 
+	/* Used when process events */
+	struct addr_location al;
+
 	struct exit_reasons_table *exit_reasons;
 	const char *exit_reasons_isa;
 
-- 
2.34.1