From: Yunhong Jiang <yunhong.jiang@linux.intel.com>
To: kvm@vger.kernel.org
Cc: mtosatti@redhat.com, rkrcmar@redhat.com, pbonzini@redhat.com,
kernellwp@gmail.com
Subject: [RFC PATCH V2 1/4] Add the kvm sched_out hook
Date: Tue, 24 May 2016 15:27:29 -0700 [thread overview]
Message-ID: <1464128852-14138-2-git-send-email-yunhong.jiang@linux.intel.com> (raw)
In-Reply-To: <1464128852-14138-1-git-send-email-yunhong.jiang@linux.intel.com>
From: Yunhong Jiang <yunhong.jiang@gmail.com>
When a vCPU thread is scheduled out, the sched_out hook will be invoked.
Signed-off-by: Yunhong Jiang <yunhong.jiang@intel.com>
---
arch/arm/include/asm/kvm_host.h | 1 +
arch/mips/include/asm/kvm_host.h | 1 +
arch/powerpc/include/asm/kvm_host.h | 1 +
arch/s390/include/asm/kvm_host.h | 1 +
arch/x86/include/asm/kvm_host.h | 1 +
arch/x86/kvm/x86.c | 4 ++++
include/linux/kvm_host.h | 1 +
virt/kvm/kvm_main.c | 1 +
8 files changed, 11 insertions(+)
diff --git a/arch/arm/include/asm/kvm_host.h b/arch/arm/include/asm/kvm_host.h
index 0df6b1fc9655..8ea4b8a1a27b 100644
--- a/arch/arm/include/asm/kvm_host.h
+++ b/arch/arm/include/asm/kvm_host.h
@@ -292,6 +292,7 @@ static inline void kvm_arch_sync_events(struct kvm *kvm) {}
static inline void kvm_arch_vcpu_uninit(struct kvm_vcpu *vcpu) {}
static inline void kvm_arch_sched_in(struct kvm_vcpu *vcpu, int cpu) {}
static inline void kvm_arch_vcpu_block_finish(struct kvm_vcpu *vcpu) {}
+static inline void kvm_arch_sched_out(struct kvm_vcpu *vcpu, int cpu) {}
static inline void kvm_arm_init_debug(void) {}
static inline void kvm_arm_setup_debug(struct kvm_vcpu *vcpu) {}
diff --git a/arch/mips/include/asm/kvm_host.h b/arch/mips/include/asm/kvm_host.h
index 6733ac575da4..6e432a3065e3 100644
--- a/arch/mips/include/asm/kvm_host.h
+++ b/arch/mips/include/asm/kvm_host.h
@@ -812,6 +812,7 @@ static inline void kvm_arch_flush_shadow_memslot(struct kvm *kvm,
struct kvm_memory_slot *slot) {}
static inline void kvm_arch_vcpu_uninit(struct kvm_vcpu *vcpu) {}
static inline void kvm_arch_sched_in(struct kvm_vcpu *vcpu, int cpu) {}
+static inline void kvm_arch_sched_out(struct kvm_vcpu *vcpu, int cpu) {}
static inline void kvm_arch_vcpu_blocking(struct kvm_vcpu *vcpu) {}
static inline void kvm_arch_vcpu_unblocking(struct kvm_vcpu *vcpu) {}
static inline void kvm_arch_vcpu_block_finish(struct kvm_vcpu *vcpu) {}
diff --git a/arch/powerpc/include/asm/kvm_host.h b/arch/powerpc/include/asm/kvm_host.h
index ec35af34a3fb..2a0ebb0a78eb 100644
--- a/arch/powerpc/include/asm/kvm_host.h
+++ b/arch/powerpc/include/asm/kvm_host.h
@@ -725,6 +725,7 @@ static inline void kvm_arch_sync_events(struct kvm *kvm) {}
static inline void kvm_arch_memslots_updated(struct kvm *kvm, struct kvm_memslots *slots) {}
static inline void kvm_arch_flush_shadow_all(struct kvm *kvm) {}
static inline void kvm_arch_sched_in(struct kvm_vcpu *vcpu, int cpu) {}
+static inline void kvm_arch_sched_out(struct kvm_vcpu *vcpu, int cpu) {}
static inline void kvm_arch_exit(void) {}
static inline void kvm_arch_vcpu_blocking(struct kvm_vcpu *vcpu) {}
static inline void kvm_arch_vcpu_unblocking(struct kvm_vcpu *vcpu) {}
diff --git a/arch/s390/include/asm/kvm_host.h b/arch/s390/include/asm/kvm_host.h
index 37b9017c6a96..69084b874837 100644
--- a/arch/s390/include/asm/kvm_host.h
+++ b/arch/s390/include/asm/kvm_host.h
@@ -688,6 +688,7 @@ static inline void kvm_arch_check_processor_compat(void *rtn) {}
static inline void kvm_arch_sync_events(struct kvm *kvm) {}
static inline void kvm_arch_vcpu_uninit(struct kvm_vcpu *vcpu) {}
static inline void kvm_arch_sched_in(struct kvm_vcpu *vcpu, int cpu) {}
+static inline void kvm_arch_sched_out(struct kvm_vcpu *vcpu, int cpu) {}
static inline void kvm_arch_free_memslot(struct kvm *kvm,
struct kvm_memory_slot *free, struct kvm_memory_slot *dont) {}
static inline void kvm_arch_memslots_updated(struct kvm *kvm, struct kvm_memslots *slots) {}
diff --git a/arch/x86/include/asm/kvm_host.h b/arch/x86/include/asm/kvm_host.h
index e0fbe7e70dc1..5e6b3ce7748f 100644
--- a/arch/x86/include/asm/kvm_host.h
+++ b/arch/x86/include/asm/kvm_host.h
@@ -959,6 +959,7 @@ struct kvm_x86_ops {
int (*check_nested_events)(struct kvm_vcpu *vcpu, bool external_intr);
void (*sched_in)(struct kvm_vcpu *kvm, int cpu);
+ void (*sched_out)(struct kvm_vcpu *vcpu);
/*
* Arch-specific dirty logging hooks. These hooks are only supposed to
diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c
index c805cf494154..269d576520ba 100644
--- a/arch/x86/kvm/x86.c
+++ b/arch/x86/kvm/x86.c
@@ -7727,6 +7727,10 @@ void kvm_arch_sched_in(struct kvm_vcpu *vcpu, int cpu)
kvm_x86_ops->sched_in(vcpu, cpu);
}
+void kvm_arch_sched_out(struct kvm_vcpu *vcpu)
+{
+}
+
int kvm_arch_init_vm(struct kvm *kvm, unsigned long type)
{
if (type)
diff --git a/include/linux/kvm_host.h b/include/linux/kvm_host.h
index b1fa8f11c95b..04c48c50faf3 100644
--- a/include/linux/kvm_host.h
+++ b/include/linux/kvm_host.h
@@ -722,6 +722,7 @@ int kvm_arch_vcpu_init(struct kvm_vcpu *vcpu);
void kvm_arch_vcpu_uninit(struct kvm_vcpu *vcpu);
void kvm_arch_sched_in(struct kvm_vcpu *vcpu, int cpu);
+void kvm_arch_sched_out(struct kvm_vcpu *vcpu);
void kvm_arch_vcpu_free(struct kvm_vcpu *vcpu);
void kvm_arch_vcpu_load(struct kvm_vcpu *vcpu, int cpu);
diff --git a/virt/kvm/kvm_main.c b/virt/kvm/kvm_main.c
index dd4ac9d9e8f5..711edf7224b1 100644
--- a/virt/kvm/kvm_main.c
+++ b/virt/kvm/kvm_main.c
@@ -3533,6 +3533,7 @@ static void kvm_sched_out(struct preempt_notifier *pn,
if (current->state == TASK_RUNNING)
vcpu->preempted = true;
+ kvm_arch_sched_out(vcpu);
kvm_arch_vcpu_put(vcpu);
}
--
1.8.3.1
next prev parent reply other threads:[~2016-05-24 22:35 UTC|newest]
Thread overview: 32+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-05-24 22:27 [RFC PATCH V2 0/4] Utilizing VMX preemption for timer virtualization Yunhong Jiang
2016-05-24 22:27 ` Yunhong Jiang [this message]
2016-05-24 22:27 ` [RFC PATCH V2 2/4] Utilize the vmx preemption timer Yunhong Jiang
2016-06-14 13:23 ` Roman Kagan
2016-06-14 13:41 ` Paolo Bonzini
2016-06-14 16:46 ` yunhong jiang
2016-06-14 21:56 ` Paolo Bonzini
2016-06-15 18:03 ` yunhong jiang
2016-06-14 16:46 ` yunhong jiang
2016-05-24 22:27 ` [RFC PATCH V2 3/4] Separate the start_sw_tscdeadline Yunhong Jiang
2016-05-24 22:27 ` [RFC PATCH V2 4/4] Utilize the vmx preemption timer for tsc deadline timer Yunhong Jiang
2016-05-24 23:11 ` David Matlack
2016-05-24 23:35 ` yunhong jiang
2016-05-25 11:58 ` Paolo Bonzini
2016-05-25 22:53 ` yunhong jiang
2016-05-26 7:20 ` Paolo Bonzini
2016-05-25 10:40 ` Paolo Bonzini
2016-05-25 13:38 ` Radim Krčmář
2016-05-25 11:52 ` Paolo Bonzini
2016-05-25 22:44 ` yunhong jiang
2016-05-26 14:05 ` Alan Jenkins
2016-05-26 15:32 ` Paolo Bonzini
2016-06-04 0:24 ` yunhong jiang
2016-06-06 13:49 ` Paolo Bonzini
2016-06-06 18:21 ` yunhong jiang
2016-05-25 13:27 ` Radim Krčmář
2016-05-25 13:51 ` Paolo Bonzini
2016-05-25 14:31 ` Radim Krčmář
2016-05-25 23:13 ` yunhong jiang
2016-06-14 11:34 ` Paolo Bonzini
2016-05-25 13:45 ` Radim Krčmář
2016-05-25 22:57 ` yunhong jiang
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