diff options
| author | Vitaly Kuznetsov <vkuznets@redhat.com> | 2016-02-27 00:13:17 +0100 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2016-03-02 01:57:20 +0100 |
| commit | 0f70b66975ce4331e9002b792d5aa6787a110181 (patch) | |
| tree | 49ad07c536e6fc4e011b4d2cb1e0402b17cab829 /drivers/hv/vmbus_drv.c | |
| parent | Drivers: hv: vmbus: avoid wait_for_completion() on crash (diff) | |
| download | linux-0f70b66975ce4331e9002b792d5aa6787a110181.tar.xz linux-0f70b66975ce4331e9002b792d5aa6787a110181.zip | |
Drivers: hv: vmbus: remove code duplication in message handling
We have 3 functions dealing with messages and they all implement
the same logic to finalize reads, move it to vmbus_signal_eom().
Suggested-by: Radim Krcmar <rkrcmar@redhat.com>
Signed-off-by: Vitaly Kuznetsov <vkuznets@redhat.com>
Reviewed-by: Radim Kr.má<rkrcmar@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/vmbus_drv.c')
| -rw-r--r-- | drivers/hv/vmbus_drv.c | 40 |
1 files changed, 2 insertions, 38 deletions
diff --git a/drivers/hv/vmbus_drv.c b/drivers/hv/vmbus_drv.c index c8f1671944d5..6cd12f108a32 100644 --- a/drivers/hv/vmbus_drv.c +++ b/drivers/hv/vmbus_drv.c @@ -709,25 +709,7 @@ static void hv_process_timer_expiration(struct hv_message *msg, int cpu) if (dev->event_handler) dev->event_handler(dev); - msg->header.message_type = HVMSG_NONE; - - /* - * Make sure the write to MessageType (ie set to - * HVMSG_NONE) happens before we read the - * MessagePending and EOMing. Otherwise, the EOMing - * will not deliver any more messages since there is - * no empty slot - */ - mb(); - - if (msg->header.message_flags.msg_pending) { - /* - * This will cause message queue rescan to - * possibly deliver another msg from the - * hypervisor - */ - wrmsrl(HV_X64_MSR_EOM, 0); - } + vmbus_signal_eom(msg); } static void vmbus_on_msg_dpc(unsigned long data) @@ -765,25 +747,7 @@ static void vmbus_on_msg_dpc(unsigned long data) entry->message_handler(hdr); msg_handled: - msg->header.message_type = HVMSG_NONE; - - /* - * Make sure the write to MessageType (ie set to - * HVMSG_NONE) happens before we read the - * MessagePending and EOMing. Otherwise, the EOMing - * will not deliver any more messages since there is - * no empty slot - */ - mb(); - - if (msg->header.message_flags.msg_pending) { - /* - * This will cause message queue rescan to - * possibly deliver another msg from the - * hypervisor - */ - wrmsrl(HV_X64_MSR_EOM, 0); - } + vmbus_signal_eom(msg); } static void vmbus_isr(void) |