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cf21be919c
Hyper-V balloon driver makes non-trivial calculations to convert Linux's representation of free/used memory to what Hyper-V host expects to see. Add a tracepoint to see what's being sent and where the data comes from. Signed-off-by: Vitaly Kuznetsov <vkuznets@redhat.com> Signed-off-by: K. Y. Srinivasan <kys@microsoft.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
49 lines
1.6 KiB
C
49 lines
1.6 KiB
C
#undef TRACE_SYSTEM
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#define TRACE_SYSTEM hyperv
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#if !defined(_HV_TRACE_BALLOON_H) || defined(TRACE_HEADER_MULTI_READ)
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#define _HV_TRACE_BALLOON_H
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#include <linux/tracepoint.h>
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TRACE_EVENT(balloon_status,
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TP_PROTO(u64 available, u64 committed,
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unsigned long vm_memory_committed,
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unsigned long pages_ballooned,
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unsigned long pages_added,
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unsigned long pages_onlined),
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TP_ARGS(available, committed, vm_memory_committed,
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pages_ballooned, pages_added, pages_onlined),
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TP_STRUCT__entry(
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__field(u64, available)
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__field(u64, committed)
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__field(unsigned long, vm_memory_committed)
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__field(unsigned long, pages_ballooned)
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__field(unsigned long, pages_added)
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__field(unsigned long, pages_onlined)
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),
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TP_fast_assign(
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__entry->available = available;
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__entry->committed = committed;
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__entry->vm_memory_committed = vm_memory_committed;
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__entry->pages_ballooned = pages_ballooned;
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__entry->pages_added = pages_added;
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__entry->pages_onlined = pages_onlined;
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),
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TP_printk("available %lld, committed %lld; vm_memory_committed %ld;"
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" pages_ballooned %ld, pages_added %ld, pages_onlined %ld",
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__entry->available, __entry->committed,
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__entry->vm_memory_committed, __entry->pages_ballooned,
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__entry->pages_added, __entry->pages_onlined
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)
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);
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#undef TRACE_INCLUDE_PATH
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#define TRACE_INCLUDE_PATH .
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#undef TRACE_INCLUDE_FILE
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#define TRACE_INCLUDE_FILE hv_trace_balloon
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#endif /* _HV_TRACE_BALLOON_H */
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/* This part must be outside protection */
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#include <trace/define_trace.h>
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