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hyper-v: trace vmbus_onoffer()

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Add tracepoint to CHANNELMSG_OFFERCHANNEL handler.

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>
This commit is contained in:
Vitaly Kuznetsov 2017-10-29 12:21:02 -07:00 committed by Greg Kroah-Hartman
parent 716fa52fb4
commit 03b81e66c7
2 changed files with 39 additions and 0 deletions
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2
drivers/hv/channel_mgmt.c
View file

@ -813,6 +813,8 @@ static void vmbus_onoffer(struct vmbus_channel_message_header *hdr)
offer = (struct vmbus_channel_offer_channel *)hdr;
trace_vmbus_onoffer(offer);
/* Allocate the channel object and save this offer. */
newchannel = alloc_channel();
if (!newchannel) {

37
drivers/hv/hv_trace.h
View file

@ -24,6 +24,43 @@ DEFINE_EVENT(vmbus_hdr_msg, vmbus_on_message,
TP_ARGS(hdr)
);
TRACE_EVENT(vmbus_onoffer,
TP_PROTO(const struct vmbus_channel_offer_channel *offer),
TP_ARGS(offer),
TP_STRUCT__entry(
__field(u32, child_relid)
__field(u8, monitorid)
__field(u16, is_ddc_int)
__field(u32, connection_id)
__array(char, if_type, 16)
__array(char, if_instance, 16)
__field(u16, chn_flags)
__field(u16, mmio_mb)
__field(u16, sub_idx)
),
TP_fast_assign(__entry->child_relid = offer->child_relid;
__entry->monitorid = offer->monitorid;
__entry->is_ddc_int = offer->is_dedicated_interrupt;
__entry->connection_id = offer->connection_id;
memcpy(__entry->if_type,
&offer->offer.if_type.b, 16);
memcpy(__entry->if_instance,
&offer->offer.if_instance.b, 16);
__entry->chn_flags = offer->offer.chn_flags;
__entry->mmio_mb = offer->offer.mmio_megabytes;
__entry->sub_idx = offer->offer.sub_channel_index;
),
TP_printk("child_relid 0x%x, monitorid 0x%x, is_dedicated %d, "
"connection_id 0x%x, if_type %pUl, if_instance %pUl, "
"chn_flags 0x%x, mmio_megabytes %d, sub_channel_index %d",
__entry->child_relid, __entry->monitorid,
__entry->is_ddc_int, __entry->connection_id,
__entry->if_type, __entry->if_instance,
__entry->chn_flags, __entry->mmio_mb,
__entry->sub_idx
)
);
#undef TRACE_INCLUDE_PATH
#define TRACE_INCLUDE_PATH .
#undef TRACE_INCLUDE_FILE