diff options
-rw-r--r-- | include/linux/context_tracking.h | 35 | ||||
-rw-r--r-- | include/linux/kvm_host.h | 37 | ||||
-rw-r--r-- | kernel/context_tracking.c | 1 |
3 files changed, 36 insertions, 37 deletions
diff --git a/include/linux/context_tracking.h b/include/linux/context_tracking.h index 365f4a61bf04..fc09d7b0dacf 100644 --- a/include/linux/context_tracking.h +++ b/include/linux/context_tracking.h | |||
@@ -3,6 +3,7 @@ | |||
3 | 3 | ||
4 | #include <linux/sched.h> | 4 | #include <linux/sched.h> |
5 | #include <linux/percpu.h> | 5 | #include <linux/percpu.h> |
6 | #include <linux/vtime.h> | ||
6 | #include <asm/ptrace.h> | 7 | #include <asm/ptrace.h> |
7 | 8 | ||
8 | struct context_tracking { | 9 | struct context_tracking { |
@@ -19,6 +20,26 @@ struct context_tracking { | |||
19 | } state; | 20 | } state; |
20 | }; | 21 | }; |
21 | 22 | ||
23 | static inline void __guest_enter(void) | ||
24 | { | ||
25 | /* | ||
26 | * This is running in ioctl context so we can avoid | ||
27 | * the call to vtime_account() with its unnecessary idle check. | ||
28 | */ | ||
29 | vtime_account_system(current); | ||
30 | current->flags |= PF_VCPU; | ||
31 | } | ||
32 | |||
33 | static inline void __guest_exit(void) | ||
34 | { | ||
35 | /* | ||
36 | * This is running in ioctl context so we can avoid | ||
37 | * the call to vtime_account() with its unnecessary idle check. | ||
38 | */ | ||
39 | vtime_account_system(current); | ||
40 | current->flags &= ~PF_VCPU; | ||
41 | } | ||
42 | |||
22 | #ifdef CONFIG_CONTEXT_TRACKING | 43 | #ifdef CONFIG_CONTEXT_TRACKING |
23 | DECLARE_PER_CPU(struct context_tracking, context_tracking); | 44 | DECLARE_PER_CPU(struct context_tracking, context_tracking); |
24 | 45 | ||
@@ -35,6 +56,9 @@ static inline bool context_tracking_active(void) | |||
35 | extern void user_enter(void); | 56 | extern void user_enter(void); |
36 | extern void user_exit(void); | 57 | extern void user_exit(void); |
37 | 58 | ||
59 | extern void guest_enter(void); | ||
60 | extern void guest_exit(void); | ||
61 | |||
38 | static inline enum ctx_state exception_enter(void) | 62 | static inline enum ctx_state exception_enter(void) |
39 | { | 63 | { |
40 | enum ctx_state prev_ctx; | 64 | enum ctx_state prev_ctx; |
@@ -57,6 +81,17 @@ extern void context_tracking_task_switch(struct task_struct *prev, | |||
57 | static inline bool context_tracking_in_user(void) { return false; } | 81 | static inline bool context_tracking_in_user(void) { return false; } |
58 | static inline void user_enter(void) { } | 82 | static inline void user_enter(void) { } |
59 | static inline void user_exit(void) { } | 83 | static inline void user_exit(void) { } |
84 | |||
85 | static inline void guest_enter(void) | ||
86 | { | ||
87 | __guest_enter(); | ||
88 | } | ||
89 | |||
90 | static inline void guest_exit(void) | ||
91 | { | ||
92 | __guest_exit(); | ||
93 | } | ||
94 | |||
60 | static inline enum ctx_state exception_enter(void) { return 0; } | 95 | static inline enum ctx_state exception_enter(void) { return 0; } |
61 | static inline void exception_exit(enum ctx_state prev_ctx) { } | 96 | static inline void exception_exit(enum ctx_state prev_ctx) { } |
62 | static inline void context_tracking_task_switch(struct task_struct *prev, | 97 | static inline void context_tracking_task_switch(struct task_struct *prev, |
diff --git a/include/linux/kvm_host.h b/include/linux/kvm_host.h index f0eea07d2c2b..8db53cfaccdb 100644 --- a/include/linux/kvm_host.h +++ b/include/linux/kvm_host.h | |||
@@ -23,6 +23,7 @@ | |||
23 | #include <linux/ratelimit.h> | 23 | #include <linux/ratelimit.h> |
24 | #include <linux/err.h> | 24 | #include <linux/err.h> |
25 | #include <linux/irqflags.h> | 25 | #include <linux/irqflags.h> |
26 | #include <linux/context_tracking.h> | ||
26 | #include <asm/signal.h> | 27 | #include <asm/signal.h> |
27 | 28 | ||
28 | #include <linux/kvm.h> | 29 | #include <linux/kvm.h> |
@@ -760,42 +761,6 @@ static inline int kvm_iommu_unmap_guest(struct kvm *kvm) | |||
760 | } | 761 | } |
761 | #endif | 762 | #endif |
762 | 763 | ||
763 | static inline void __guest_enter(void) | ||
764 | { | ||
765 | /* | ||
766 | * This is running in ioctl context so we can avoid | ||
767 | * the call to vtime_account() with its unnecessary idle check. | ||
768 | */ | ||
769 | vtime_account_system(current); | ||
770 | current->flags |= PF_VCPU; | ||
771 | } | ||
772 | |||
773 | static inline void __guest_exit(void) | ||
774 | { | ||
775 | /* | ||
776 | * This is running in ioctl context so we can avoid | ||
777 | * the call to vtime_account() with its unnecessary idle check. | ||
778 | */ | ||
779 | vtime_account_system(current); | ||
780 | current->flags &= ~PF_VCPU; | ||
781 | } | ||
782 | |||
783 | #ifdef CONFIG_CONTEXT_TRACKING | ||
784 | extern void guest_enter(void); | ||
785 | extern void guest_exit(void); | ||
786 | |||
787 | #else /* !CONFIG_CONTEXT_TRACKING */ | ||
788 | static inline void guest_enter(void) | ||
789 | { | ||
790 | __guest_enter(); | ||
791 | } | ||
792 | |||
793 | static inline void guest_exit(void) | ||
794 | { | ||
795 | __guest_exit(); | ||
796 | } | ||
797 | #endif /* !CONFIG_CONTEXT_TRACKING */ | ||
798 | |||
799 | static inline void kvm_guest_enter(void) | 764 | static inline void kvm_guest_enter(void) |
800 | { | 765 | { |
801 | unsigned long flags; | 766 | unsigned long flags; |
diff --git a/kernel/context_tracking.c b/kernel/context_tracking.c index 65349f07b878..85bdde1137eb 100644 --- a/kernel/context_tracking.c +++ b/kernel/context_tracking.c | |||
@@ -15,7 +15,6 @@ | |||
15 | */ | 15 | */ |
16 | 16 | ||
17 | #include <linux/context_tracking.h> | 17 | #include <linux/context_tracking.h> |
18 | #include <linux/kvm_host.h> | ||
19 | #include <linux/rcupdate.h> | 18 | #include <linux/rcupdate.h> |
20 | #include <linux/sched.h> | 19 | #include <linux/sched.h> |
21 | #include <linux/hardirq.h> | 20 | #include <linux/hardirq.h> |