linux-kernel - [PATCH 07/10] perf kvm: apply new mmap

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Date:   Tue, 10 Oct 2017 10:20:20 -0700
From:   kan.liang@...el.com
To:     acme@...nel.org, peterz@...radead.org, mingo@...hat.com,
        linux-kernel@...r.kernel.org
Cc:     jolsa@...nel.org, wangnan0@...wei.com, hekuang@...wei.com,
        namhyung@...nel.org, alexander.shishkin@...ux.intel.com,
        adrian.hunter@...el.com, ak@...ux.intel.com,
        Kan Liang <kan.liang@...el.com>
Subject: [PATCH 07/10] perf kvm: apply new mmap_read interfaces

From: Kan Liang <kan.liang@...el.com>

no functional change

Signed-off-by: Kan Liang <kan.liang@...el.com>
---
 tools/perf/builtin-kvm.c | 10 +++++++++-
 1 file changed, 9 insertions(+), 1 deletion(-)

diff --git a/tools/perf/builtin-kvm.c b/tools/perf/builtin-kvm.c
index 721f4f9..397a6b6 100644
--- a/tools/perf/builtin-kvm.c
+++ b/tools/perf/builtin-kvm.c
@@ -741,11 +741,18 @@ static s64 perf_kvm__mmap_read_idx(struct perf_kvm_stat *kvm, int idx,
 {
 	union perf_event *event;
 	struct perf_sample sample;
+	struct perf_mmap_read read;
 	s64 n = 0;
 	int err;
 
 	*mmap_time = ULLONG_MAX;
-	while ((event = perf_evlist__mmap_read(kvm->evlist, idx)) != NULL) {
+
+	if (perf_evlist__mmap_read_init(kvm->evlist, idx, &read, false)) {
+		pr_err("Can't get mmap information\n");
+		return -1;
+	}
+
+	while ((event = perf_mmap__read_event(&read)) != NULL) {
 		err = perf_evlist__parse_sample(kvm->evlist, event, &sample);
 		if (err) {
 			perf_evlist__mmap_consume(kvm->evlist, idx);
@@ -774,6 +781,7 @@ static s64 perf_kvm__mmap_read_idx(struct perf_kvm_stat *kvm, int idx,
 		if (n == PERF_KVM__MAX_EVENTS_PER_MMAP)
 			break;
 	}
+	perf_mmap__read_done(&read);
 
 	return n;
 }
-- 
2.5.5