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| author | Vitaly Kuznetsov <vkuznets@redhat.com> | 2017-10-29 12:21:16 -0700 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2017-11-04 12:04:26 +0100 |
| commit | 991f8f1c6eb634688952fa6a03cc0ce949b6e363 (patch) | |
| tree | 4751fc6d4cb24acca0acd2c409a62f0790bc308c | |
| parent | 98f31a0050ca8ba47b57c6d67599013cdbdd2122 (diff) | |
| download | linux-991f8f1c6eb634688952fa6a03cc0ce949b6e363.tar.gz linux-991f8f1c6eb634688952fa6a03cc0ce949b6e363.tar.bz2 linux-991f8f1c6eb634688952fa6a03cc0ce949b6e363.zip | |
hyper-v: trace channel events
Added an additional set of trace points for when channel gets notified
or signals host.
Suggested-by: Stephen Hemminger <sthemmin@microsoft.com>
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>
| -rw-r--r-- | drivers/hv/channel.c | 2 | ||||
| -rw-r--r-- | drivers/hv/connection.c | 2 | ||||
| -rw-r--r-- | drivers/hv/hv_trace.h | 23 | ||||
| -rw-r--r-- | drivers/hv/vmbus_drv.c | 2 |
4 files changed, 29 insertions, 0 deletions
diff --git a/drivers/hv/channel.c b/drivers/hv/channel.c index ed3634e53e15..19f0cf37e0ed 100644 --- a/drivers/hv/channel.c +++ b/drivers/hv/channel.c @@ -43,6 +43,8 @@ void vmbus_setevent(struct vmbus_channel *channel) { struct hv_monitor_page *monitorpage; + trace_vmbus_setevent(channel); + /* * For channels marked as in "low latency" mode * bypass the monitor page mechanism. diff --git a/drivers/hv/connection.c b/drivers/hv/connection.c index 05f413c4fe3b..447371f4de56 100644 --- a/drivers/hv/connection.c +++ b/drivers/hv/connection.c @@ -322,6 +322,8 @@ void vmbus_on_event(unsigned long data) struct vmbus_channel *channel = (void *) data; unsigned long time_limit = jiffies + 2; + trace_vmbus_on_event(channel); + do { void (*callback_fn)(void *); diff --git a/drivers/hv/hv_trace.h b/drivers/hv/hv_trace.h index 5382d9630306..d635ee95b20d 100644 --- a/drivers/hv/hv_trace.h +++ b/drivers/hv/hv_trace.h @@ -294,6 +294,29 @@ TRACE_EVENT(vmbus_send_tl_connect_request, ) ); +DECLARE_EVENT_CLASS(vmbus_channel, + TP_PROTO(const struct vmbus_channel *channel), + TP_ARGS(channel), + TP_STRUCT__entry(__field(u32, relid)), + TP_fast_assign(__entry->relid = channel->offermsg.child_relid), + TP_printk("relid 0x%x", __entry->relid) +); + +DEFINE_EVENT(vmbus_channel, vmbus_chan_sched, + TP_PROTO(const struct vmbus_channel *channel), + TP_ARGS(channel) +); + +DEFINE_EVENT(vmbus_channel, vmbus_setevent, + TP_PROTO(const struct vmbus_channel *channel), + TP_ARGS(channel) +); + +DEFINE_EVENT(vmbus_channel, vmbus_on_event, + TP_PROTO(const struct vmbus_channel *channel), + TP_ARGS(channel) +); + #undef TRACE_INCLUDE_PATH #define TRACE_INCLUDE_PATH . #undef TRACE_INCLUDE_FILE diff --git a/drivers/hv/vmbus_drv.c b/drivers/hv/vmbus_drv.c index 8f9293a87c6b..6a86746d4f60 100644 --- a/drivers/hv/vmbus_drv.c +++ b/drivers/hv/vmbus_drv.c @@ -946,6 +946,8 @@ static void vmbus_chan_sched(struct hv_per_cpu_context *hv_cpu) if (channel->rescind) continue; + trace_vmbus_chan_sched(channel); + ++channel->interrupts; switch (channel->callback_mode) { |