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X86/Hyper-V: Add hyperv_nested_flush_guest_mapping ftrace support 

This patch is to add hyperv_nested_flush_guest_mapping support to trace
hvFlushGuestPhysicalAddressSpace hypercall.

Signed-off-by: Lan Tianyu <Tianyu.Lan@microsoft.com>
Acked-by: K. Y. Srinivasan <kys@microsoft.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
This commit is contained in:
Tianyu Lan 2018-07-19 08:40:12 +00:00 committed by Paolo Bonzini
parent eb914cfe72
commit 60cfce4c4f
2 changed files with 17 additions and 0 deletions
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3
arch/x86/hyperv/nested.c
View File

@ -14,6 +14,8 @@
#include <asm/mshyperv.h>
#include <asm/tlbflush.h>
#include <asm/trace/hyperv.h>
int hyperv_flush_guest_mapping(u64 as)
{
struct hv_guest_mapping_flush **flush_pcpu;
@ -48,6 +50,7 @@ int hyperv_flush_guest_mapping(u64 as)
ret = 0;
fault:
trace_hyperv_nested_flush_guest_mapping(as, ret);
return ret;
}
EXPORT_SYMBOL_GPL(hyperv_flush_guest_mapping);

14
arch/x86/include/asm/trace/hyperv.h
View File

@ -28,6 +28,20 @@ TRACE_EVENT(hyperv_mmu_flush_tlb_others,
__entry->addr, __entry->end)
);
TRACE_EVENT(hyperv_nested_flush_guest_mapping,
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)
);
#endif /* CONFIG_HYPERV */
#undef TRACE_INCLUDE_PATH