[PATCH V4 13/15] x86/Hyper-v: Add trace in the hyperv_nested_flush_guest_mapping_range()

From: lantianyu1986
Date: Sat Oct 13 2018 - 10:55:38 EST


From: Lan Tianyu <Tianyu.Lan@xxxxxxxxxxxxx>

This patch is to trace log in the hyperv_nested_flush_
guest_mapping_range().

Signed-off-by: Lan Tianyu <Tianyu.Lan@xxxxxxxxxxxxx>
---
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