diff options
| author | Vitaly Kuznetsov <vkuznets@redhat.com> | 2017-10-29 12:21:13 -0700 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2017-11-04 12:04:25 +0100 |
| commit | 034ebf552e0a3403eeb7e7f8a3a502fc0c70a24c (patch) | |
| tree | b7d8455fb7b161733de85415883e0f2e17c45ffe /drivers/hv | |
| parent | 09cdf8f87c15dbe9a3eeb6de04aaafd0cd922d6d (diff) | |
| download | linux-034ebf552e0a3403eeb7e7f8a3a502fc0c70a24c.tar.bz2 | |
hyper-v: trace vmbus_negotiate_version()
Add tracepoint to CHANNELMSG_INITIATE_CONTACT sender.
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')
| -rw-r--r-- | drivers/hv/connection.c | 3 | ||||
| -rw-r--r-- | drivers/hv/hv_trace.h | 26 |
2 files changed, 29 insertions, 0 deletions
diff --git a/drivers/hv/connection.c b/drivers/hv/connection.c index b06a6b796819..05f413c4fe3b 100644 --- a/drivers/hv/connection.c +++ b/drivers/hv/connection.c @@ -117,6 +117,9 @@ static int vmbus_negotiate_version(struct vmbus_channel_msginfo *msginfo, ret = vmbus_post_msg(msg, sizeof(struct vmbus_channel_initiate_contact), true); + + trace_vmbus_negotiate_version(msg, ret); + if (ret != 0) { spin_lock_irqsave(&vmbus_connection.channelmsg_lock, flags); list_del(&msginfo->msglistentry); diff --git a/drivers/hv/hv_trace.h b/drivers/hv/hv_trace.h index cd33a52ef27f..f06284d64a8c 100644 --- a/drivers/hv/hv_trace.h +++ b/drivers/hv/hv_trace.h @@ -232,6 +232,32 @@ TRACE_EVENT(vmbus_teardown_gpadl, ) ); +TRACE_EVENT(vmbus_negotiate_version, + TP_PROTO(const struct vmbus_channel_initiate_contact *msg, int ret), + TP_ARGS(msg, ret), + TP_STRUCT__entry( + __field(u32, ver) + __field(u32, target_vcpu) + __field(int, ret) + __field(u64, int_page) + __field(u64, mon_page1) + __field(u64, mon_page2) + ), + TP_fast_assign( + __entry->ver = msg->vmbus_version_requested; + __entry->target_vcpu = msg->target_vcpu; + __entry->int_page = msg->interrupt_page; + __entry->mon_page1 = msg->monitor_page1; + __entry->mon_page2 = msg->monitor_page2; + __entry->ret = ret; + ), + TP_printk("sending vmbus_version_requested %d, target_vcpu 0x%x, " + "pages %llx:%llx:%llx, ret %d", + __entry->ver, __entry->target_vcpu, __entry->int_page, + __entry->mon_page1, __entry->mon_page2, __entry->ret + ) + ); + #undef TRACE_INCLUDE_PATH #define TRACE_INCLUDE_PATH . #undef TRACE_INCLUDE_FILE |