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From:   Tianyu Lan <Tianyu.Lan@microsoft.com>
CC:     Tianyu Lan <Tianyu.Lan@microsoft.com>,
        KY Srinivasan <kys@microsoft.com>,
        Haiyang Zhang <haiyangz@microsoft.com>,
        Stephen Hemminger <sthemmin@microsoft.com>,
        "tglx@linutronix.de" <tglx@linutronix.de>,
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        "linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
        "kvm@vger.kernel.org" <kvm@vger.kernel.org>,
        "Michael Kelley (EOSG)" <Michael.H.Kelley@microsoft.com>,
        vkuznets <vkuznets@redhat.com>,
        Jork Loeser <Jork.Loeser@microsoft.com>
Subject: [PATCH 11/13] x86/Hyper-v: Add trace in the
 hyperv_nested_flush_guest_mapping_range()
Thread-Topic: [PATCH 11/13] x86/Hyper-v: Add trace in the
 hyperv_nested_flush_guest_mapping_range()
Thread-Index: AQHUSOHN5/FjZvVAJk20Q4a8F8WcXw==
Date:   Mon, 10 Sep 2018 08:39:34 +0000
Message-ID: <20180910083806.65177-12-Tianyu.Lan@microsoft.com>
References: <20180910083806.65177-1-Tianyu.Lan@microsoft.com>
In-Reply-To: <20180910083806.65177-1-Tianyu.Lan@microsoft.com>
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This patch is to trace log in the hyperv_nested_flush_
guest_mapping_range().

Signed-off-by: Lan Tianyu <Tianyu.Lan@microsoft.com>
---
 arch/x86/hyperv/nested.c            |  1 +
 arch/x86/include/asm/trace/hyperv.h | 14 ++++++++++++++
 2 files changed, 15 insertions(+)

diff --git a/arch/x86/hyperv/nested.c b/arch/x86/hyperv/nested.c
index bb716ed94320..90e5eee1b410 100644
--- a/arch/x86/hyperv/nested.c
+++ b/arch/x86/hyperv/nested.c
@@ -161,6 +161,7 @@ int hyperv_flush_guest_mapping_range(u64 as, struct kvm=
_tlb_range *range)
 	if (!(status & HV_HYPERCALL_RESULT_MASK))
 		ret =3D 0;
 fault:
+	trace_hyperv_nested_flush_guest_mapping_range(as, ret);
 	return ret;
 }
 EXPORT_SYMBOL_GPL(hyperv_flush_guest_mapping_range);
diff --git a/arch/x86/include/asm/trace/hyperv.h b/arch/x86/include/asm/tra=
ce/hyperv.h
index 2e6245a023ef..ace464f09681 100644
--- a/arch/x86/include/asm/trace/hyperv.h
+++ b/arch/x86/include/asm/trace/hyperv.h
@@ -42,6 +42,20 @@ TRACE_EVENT(hyperv_nested_flush_guest_mapping,
 	    TP_printk("address space %llx ret %d", __entry->as, __entry->ret)
 	);
=20
+TRACE_EVENT(hyperv_nested_flush_guest_mapping_range,
+	    TP_PROTO(u64 as, int ret),
+	    TP_ARGS(as, ret),
+
+	    TP_STRUCT__entry(
+		    __field(u64, as)
+		    __field(int, ret)
+		    ),
+	    TP_fast_assign(__entry->as =3D as;
+			   __entry->ret =3D ret;
+		    ),
+	    TP_printk("address space %llx ret %d", __entry->as, __entry->ret)
+	);
+
 TRACE_EVENT(hyperv_send_ipi_mask,
 	    TP_PROTO(const struct cpumask *cpus,
 		     int vector),
--=20
2.14.4