linux-kernel - [PATCH] KVM: selftests: Tweak time measurement flag in kvm_page_table

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Date:   Mon, 19 Apr 2021 18:49:47 +0800
From:   Yanan Wang <wangyanan55@...wei.com>
To:     Paolo Bonzini <pbonzini@...hat.com>
CC:     <kvm@...r.kernel.org>, <linux-kselftest@...r.kernel.org>,
        <linux-kernel@...r.kernel.org>, <wanghaibin.wang@...wei.com>,
        <yuzenghui@...wei.com>, Yanan Wang <wangyanan55@...wei.com>
Subject: [PATCH] KVM: selftests: Tweak time measurement flag in kvm_page_table_test

Also use CLOCK_MONOTONIC flag to get time in kvm_page_table_test.c,
since that's what all the kvm/selftests do currently. And this will
be consistent with function timespec_elapsed() in test_util.c.

Signed-off-by: Yanan Wang <wangyanan55@...wei.com>
---
 tools/testing/selftests/kvm/kvm_page_table_test.c | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/tools/testing/selftests/kvm/kvm_page_table_test.c b/tools/testing/selftests/kvm/kvm_page_table_test.c
index 1c4753fff19e..d7847fba47a8 100644
--- a/tools/testing/selftests/kvm/kvm_page_table_test.c
+++ b/tools/testing/selftests/kvm/kvm_page_table_test.c
@@ -212,7 +212,7 @@ static void *vcpu_worker(void *data)
 		if (READ_ONCE(host_quit))
 			return NULL;
 
-		clock_gettime(CLOCK_MONOTONIC_RAW, &start);
+		clock_gettime(CLOCK_MONOTONIC, &start);
 		ret = _vcpu_run(vm, vcpu_id);
 		ts_diff = timespec_elapsed(start);
 
@@ -390,7 +390,7 @@ static void run_test(enum vm_guest_mode mode, void *arg)
 	/* Test the stage of KVM creating mappings */
 	*current_stage = KVM_CREATE_MAPPINGS;
 
-	clock_gettime(CLOCK_MONOTONIC_RAW, &start);
+	clock_gettime(CLOCK_MONOTONIC, &start);
 	vcpus_complete_new_stage(*current_stage);
 	ts_diff = timespec_elapsed(start);
 
@@ -403,7 +403,7 @@ static void run_test(enum vm_guest_mode mode, void *arg)
 
 	*current_stage = KVM_UPDATE_MAPPINGS;
 
-	clock_gettime(CLOCK_MONOTONIC_RAW, &start);
+	clock_gettime(CLOCK_MONOTONIC, &start);
 	vcpus_complete_new_stage(*current_stage);
 	ts_diff = timespec_elapsed(start);
 
@@ -415,7 +415,7 @@ static void run_test(enum vm_guest_mode mode, void *arg)
 
 	*current_stage = KVM_ADJUST_MAPPINGS;
 
-	clock_gettime(CLOCK_MONOTONIC_RAW, &start);
+	clock_gettime(CLOCK_MONOTONIC, &start);
 	vcpus_complete_new_stage(*current_stage);
 	ts_diff = timespec_elapsed(start);
 
-- 
2.23.0