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| author | Andrey Smetanin <asmetanin@virtuozzo.com> | 2015-09-16 11:29:50 +0200 |
|---|---|---|
| committer | Paolo Bonzini <pbonzini@redhat.com> | 2015-10-01 15:06:33 +0200 |
| commit | 9eec50b8bbe1535c440a1ee88c1958f78fc55957 (patch) | |
| tree | 52b64637f1d0f83baddbce10436aa9b36290f4db /kernel/sched/cputime.c | |
| parent | kvm/x86: Hyper-V HV_X64_MSR_VP_INDEX export for QEMU. (diff) | |
| download | linux-9eec50b8bbe1535c440a1ee88c1958f78fc55957.tar.xz linux-9eec50b8bbe1535c440a1ee88c1958f78fc55957.zip | |
kvm/x86: Hyper-V HV_X64_MSR_VP_RUNTIME support
HV_X64_MSR_VP_RUNTIME msr used by guest to get
"the time the virtual processor consumes running guest code,
and the time the associated logical processor spends running
hypervisor code on behalf of that guest."
Calculation of this time is performed by task_cputime_adjusted()
for vcpu task.
Necessary to support loading of winhv.sys in guest, which in turn is
required to support Windows VMBus.
Signed-off-by: Andrey Smetanin <asmetanin@virtuozzo.com>
Reviewed-by: Roman Kagan <rkagan@virtuozzo.com>
Signed-off-by: Denis V. Lunev <den@openvz.org>
CC: Paolo Bonzini <pbonzini@redhat.com>
CC: Gleb Natapov <gleb@kernel.org>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Diffstat (limited to 'kernel/sched/cputime.c')
| -rw-r--r-- | kernel/sched/cputime.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/kernel/sched/cputime.c b/kernel/sched/cputime.c index 8cbc3db671df..26a54461bf59 100644 --- a/kernel/sched/cputime.c +++ b/kernel/sched/cputime.c @@ -444,6 +444,7 @@ void task_cputime_adjusted(struct task_struct *p, cputime_t *ut, cputime_t *st) *ut = p->utime; *st = p->stime; } +EXPORT_SYMBOL_GPL(task_cputime_adjusted); void thread_group_cputime_adjusted(struct task_struct *p, cputime_t *ut, cputime_t *st) { @@ -652,6 +653,7 @@ void task_cputime_adjusted(struct task_struct *p, cputime_t *ut, cputime_t *st) task_cputime(p, &cputime.utime, &cputime.stime); cputime_adjust(&cputime, &p->prev_cputime, ut, st); } +EXPORT_SYMBOL_GPL(task_cputime_adjusted); void thread_group_cputime_adjusted(struct task_struct *p, cputime_t *ut, cputime_t *st) { |