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From:   lantianyu1986@gmail.com
Cc:     Lan Tianyu <Tianyu.Lan@microsoft.com>, kys@microsoft.com,
        haiyangz@microsoft.com, sthemmin@microsoft.com, tglx@linutronix.de,
        mingo@redhat.com, hpa@zytor.com, x86@kernel.org,
        pbonzini@redhat.com, rkrcmar@redhat.com,
        devel@linuxdriverproject.org, linux-kernel@vger.kernel.org,
        kvm@vger.kernel.org, michael.h.kelley@microsoft.com,
        vkuznets@redhat.com
Subject: [PATCH V4 13/15] x86/Hyper-v: Add trace in the hyperv_nested_flush_guest_mapping_range()
Date:   Sat, 13 Oct 2018 22:54:04 +0800
Message-Id: <20181013145406.4911-14-Tianyu.Lan@microsoft.com>
In-Reply-To: <20181013145406.4911-1-Tianyu.Lan@microsoft.com>
References: <20181013145406.4911-1-Tianyu.Lan@microsoft.com>
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Sender: linux-kernel-owner@vger.kernel.org
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From: Lan Tianyu <Tianyu.Lan@microsoft.com>

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 a6fdfec63c7d..4850c74508f3 100644
--- a/arch/x86/hyperv/nested.c
+++ b/arch/x86/hyperv/nested.c
@@ -135,6 +135,7 @@ int hyperv_flush_guest_mapping_range(u64 as, struct hyperv_tlb_range *range)
 	else
 		ret = status;
 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/trace/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)
 	);
 
+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 = as;
+			   __entry->ret = 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),
-- 
2.14.4