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hyperv: Clean up Hyper-V timecounter a bit.

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MFC after:	1 week
Sponsored by:	Microsoft OSTC
Differential Revision:	https://reviews.freebsd.org/D6569
This commit is contained in:
Sepherosa Ziehau 2016-05-27 07:05:30 +00:00
parent 62eb6e21b6
commit 7da9c32e83
1 changed files with 17 additions and 10 deletions
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27
sys/dev/hyperv/vmbus/hv_hv.c
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@ -74,22 +74,29 @@ struct hypercall_ctx {
struct hyperv_dma hc_dma;
};
static struct hypercall_ctx hypercall_context;
static u_int hyperv_get_timecount(struct timecounter *tc);
static u_int hv_get_timecount(struct timecounter *tc);
u_int hyperv_features;
u_int hyperv_recommends;
u_int hyperv_features;
u_int hyperv_recommends;
static u_int hyperv_pm_features;
static u_int hyperv_features3;
static struct timecounter hv_timecounter = {
hv_get_timecount, 0, ~0u, HV_NANOSECONDS_PER_SEC/100, "Hyper-V", HV_NANOSECONDS_PER_SEC/100
static struct timecounter hyperv_timecounter = {
.tc_get_timecount = hyperv_get_timecount,
.tc_poll_pps = NULL,
.tc_counter_mask = 0xffffffff,
.tc_frequency = HV_NANOSECONDS_PER_SEC/100,
.tc_name = "Hyper-V",
.tc_quality = 2000,
.tc_flags = 0,
.tc_priv = NULL
};
static struct hypercall_ctx hypercall_context;
static u_int
hv_get_timecount(struct timecounter *tc)
hyperv_get_timecount(struct timecounter *tc __unused)
{
return rdmsr(MSR_HV_TIME_REF_COUNT);
}
@ -304,8 +311,8 @@ hyperv_init(void *dummy __unused)
wrmsr(MSR_HV_GUEST_OS_ID, MSR_HV_GUESTID_FREEBSD);
if (hyperv_features & CPUID_HV_MSR_TIME_REFCNT) {
/* Register virtual timecount */
tc_init(&hv_timecounter);
/* Register Hyper-V timecounter */
tc_init(&hyperv_timecounter);
}
}
SYSINIT(hyperv_initialize, SI_SUB_HYPERVISOR, SI_ORDER_FIRST, hyperv_init,