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| author | Vitaly Kuznetsov <vkuznets@redhat.com> | 2018-03-04 22:17:22 -0700 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2018-03-06 09:57:17 -0800 |
| commit | cf21be919c5960da2eb7bc91f8056adb27b56712 (patch) | |
| tree | 359dc62a5529d9c9cb1fae9fa6697a3606737d15 /drivers/hv/hv_trace_balloon.h | |
| parent | bba072d1627222325e79b7b8e6c0847e4a32d96c (diff) | |
| download | linux-cf21be919c5960da2eb7bc91f8056adb27b56712.tar.gz linux-cf21be919c5960da2eb7bc91f8056adb27b56712.tar.bz2 linux-cf21be919c5960da2eb7bc91f8056adb27b56712.zip | |
hv_balloon: trace post_status
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>
Diffstat (limited to 'drivers/hv/hv_trace_balloon.h')
| -rw-r--r-- | drivers/hv/hv_trace_balloon.h | 48 |
1 files changed, 48 insertions, 0 deletions
diff --git a/drivers/hv/hv_trace_balloon.h b/drivers/hv/hv_trace_balloon.h new file mode 100644 index 000000000000..93082888aec3 --- /dev/null +++ b/drivers/hv/hv_trace_balloon.h @@ -0,0 +1,48 @@ +#undef TRACE_SYSTEM +#define TRACE_SYSTEM hyperv + +#if !defined(_HV_TRACE_BALLOON_H) || defined(TRACE_HEADER_MULTI_READ) +#define _HV_TRACE_BALLOON_H + +#include <linux/tracepoint.h> + +TRACE_EVENT(balloon_status, + TP_PROTO(u64 available, u64 committed, + unsigned long vm_memory_committed, + unsigned long pages_ballooned, + unsigned long pages_added, + unsigned long pages_onlined), + TP_ARGS(available, committed, vm_memory_committed, + pages_ballooned, pages_added, pages_onlined), + TP_STRUCT__entry( + __field(u64, available) + __field(u64, committed) + __field(unsigned long, vm_memory_committed) + __field(unsigned long, pages_ballooned) + __field(unsigned long, pages_added) + __field(unsigned long, pages_onlined) + ), + TP_fast_assign( + __entry->available = available; + __entry->committed = committed; + __entry->vm_memory_committed = vm_memory_committed; + __entry->pages_ballooned = pages_ballooned; + __entry->pages_added = pages_added; + __entry->pages_onlined = pages_onlined; + ), + TP_printk("available %lld, committed %lld; vm_memory_committed %ld;" + " pages_ballooned %ld, pages_added %ld, pages_onlined %ld", + __entry->available, __entry->committed, + __entry->vm_memory_committed, __entry->pages_ballooned, + __entry->pages_added, __entry->pages_onlined + ) + ); + +#undef TRACE_INCLUDE_PATH +#define TRACE_INCLUDE_PATH . +#undef TRACE_INCLUDE_FILE +#define TRACE_INCLUDE_FILE hv_trace_balloon +#endif /* _HV_TRACE_BALLOON_H */ + +/* This part must be outside protection */ +#include <trace/define_trace.h> |