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hyperv/hn: Don't start shared TX taskq, if the hypervisor is not Hyper-V.

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- Move the SYSINIT to DRIVER/SECOND, i.e. after the vm_guest becomes
  determistic.
- Minor style changes.

MFC after:	1 week
Sponsored by:	Microsoft
Differential Revision:	https://reviews.freebsd.org/D8370
This commit is contained in:
Sepherosa Ziehau 2016-10-31 05:22:00 +00:00
parent 82d71ca917
commit 427e366e43
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=308120
1 changed files with 7 additions and 2 deletions
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9
sys/dev/hyperv/netvsc/hv_netvsc_drv_freebsd.c
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@ -4627,6 +4627,10 @@ hn_chan_callback(struct vmbus_channel *chan, void *xrxr)
static void
hn_tx_taskq_create(void *arg __unused)
{
if (vm_guest != VM_GUEST_HV)
return;
if (!hn_share_tx_taskq)
return;
@ -4645,16 +4649,17 @@ hn_tx_taskq_create(void *arg __unused)
taskqueue_start_threads(&hn_tx_taskq, 1, PI_NET, "hn tx");
}
}
SYSINIT(hn_txtq_create, SI_SUB_DRIVERS, SI_ORDER_FIRST,
SYSINIT(hn_txtq_create, SI_SUB_DRIVERS, SI_ORDER_SECOND,
hn_tx_taskq_create, NULL);
static void
hn_tx_taskq_destroy(void *arg __unused)
{
if (hn_tx_taskq != NULL)
taskqueue_free(hn_tx_taskq);
}
SYSUNINIT(hn_txtq_destroy, SI_SUB_DRIVERS, SI_ORDER_FIRST,
SYSUNINIT(hn_txtq_destroy, SI_SUB_DRIVERS, SI_ORDER_SECOND,
hn_tx_taskq_destroy, NULL);
static device_method_t netvsc_methods[] = {