From: Wanpeng Li <kernellwp@gmail.com>
To: linux-kernel@vger.kernel.org, kvm@vger.kernel.org
Cc: Paolo Bonzini <pbonzini@redhat.com>,
Sean Christopherson <seanjc@google.com>,
Vitaly Kuznetsov <vkuznets@redhat.com>,
Wanpeng Li <wanpengli@tencent.com>,
Jim Mattson <jmattson@google.com>, Joerg Roedel <joro@8bytes.org>,
Thomas Gleixner <tglx@linutronix.de>,
Michael Tokarev <mjt@tls.msk.ru>
Subject: [PATCH v2 1/3] context_tracking: Split guest_enter/exit_irqoff
Date: Tue, 13 Apr 2021 15:16:07 +0800 [thread overview]
Message-ID: <1618298169-3831-2-git-send-email-wanpengli@tencent.com> (raw)
In-Reply-To: <1618298169-3831-1-git-send-email-wanpengli@tencent.com>
From: Wanpeng Li <wanpengli@tencent.com>
Split context_tracking part from guest_enter/exit_irqoff, it will be
called separately in later patches.
Suggested-by: Thomas Gleixner <tglx@linutronix.de>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Sean Christopherson <seanjc@google.com>
Cc: Michael Tokarev <mjt@tls.msk.ru>
Signed-off-by: Wanpeng Li <wanpengli@tencent.com>
---
include/linux/context_tracking.h | 42 +++++++++++++++++++++++++++++-----------
1 file changed, 31 insertions(+), 11 deletions(-)
diff --git a/include/linux/context_tracking.h b/include/linux/context_tracking.h
index bceb064..d8ad844 100644
--- a/include/linux/context_tracking.h
+++ b/include/linux/context_tracking.h
@@ -104,16 +104,8 @@ static inline void context_tracking_init(void) { }
#ifdef CONFIG_VIRT_CPU_ACCOUNTING_GEN
-/* must be called with irqs disabled */
-static __always_inline void guest_enter_irqoff(void)
+static __always_inline void context_guest_enter_irqoff(void)
{
- instrumentation_begin();
- if (vtime_accounting_enabled_this_cpu())
- vtime_guest_enter(current);
- else
- current->flags |= PF_VCPU;
- instrumentation_end();
-
if (context_tracking_enabled())
__context_tracking_enter(CONTEXT_GUEST);
@@ -131,10 +123,28 @@ static __always_inline void guest_enter_irqoff(void)
}
}
-static __always_inline void guest_exit_irqoff(void)
+/* must be called with irqs disabled */
+static __always_inline void guest_enter_irqoff(void)
+{
+ instrumentation_begin();
+ if (vtime_accounting_enabled_this_cpu())
+ vtime_guest_enter(current);
+ else
+ current->flags |= PF_VCPU;
+ instrumentation_end();
+
+ context_guest_enter_irqoff();
+}
+
+static __always_inline void context_guest_exit_irqoff(void)
{
if (context_tracking_enabled())
__context_tracking_exit(CONTEXT_GUEST);
+}
+
+static __always_inline void guest_exit_irqoff(void)
+{
+ context_guest_exit_irqoff();
instrumentation_begin();
if (vtime_accounting_enabled_this_cpu())
@@ -145,6 +155,13 @@ static __always_inline void guest_exit_irqoff(void)
}
#else
+static __always_inline void context_guest_enter_irqoff(void)
+{
+ instrumentation_begin();
+ rcu_virt_note_context_switch(smp_processor_id());
+ instrumentation_end();
+}
+
static __always_inline void guest_enter_irqoff(void)
{
/*
@@ -155,10 +172,13 @@ static __always_inline void guest_enter_irqoff(void)
instrumentation_begin();
vtime_account_kernel(current);
current->flags |= PF_VCPU;
- rcu_virt_note_context_switch(smp_processor_id());
instrumentation_end();
+
+ context_guest_enter_irqoff();
}
+static __always_inline void context_guest_exit_irqoff(void) { }
+
static __always_inline void guest_exit_irqoff(void)
{
instrumentation_begin();
--
2.7.4
next prev parent reply other threads:[~2021-04-13 7:16 UTC|newest]
Thread overview: 15+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-04-13 7:16 [PATCH v2 0/3] KVM: Properly account for guest CPU time Wanpeng Li
2021-04-13 7:16 ` Wanpeng Li [this message]
2021-04-13 7:35 ` [PATCH v2 1/3] context_tracking: Split guest_enter/exit_irqoff Christian Borntraeger
2021-04-13 7:38 ` Wanpeng Li
2021-04-13 7:48 ` Christian Borntraeger
2021-04-13 7:52 ` Wanpeng Li
2021-04-13 8:07 ` Christian Borntraeger
2021-04-13 7:16 ` [PATCH v2 2/3] context_tracking: Provide separate vtime accounting functions Wanpeng Li
2021-04-13 7:16 ` [PATCH v2 3/3] x86/kvm: Fix vtime accounting Wanpeng Li
2021-04-13 8:32 ` [PATCH v2 0/3] KVM: Properly account for guest CPU time Christian Borntraeger
2021-04-13 17:25 ` Sean Christopherson
2021-04-14 9:36 ` Wanpeng Li
2021-04-15 0:49 ` Sean Christopherson
2021-04-15 1:23 ` Wanpeng Li
2021-04-15 19:02 ` Sean Christopherson
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=1618298169-3831-2-git-send-email-wanpengli@tencent.com \
--to=kernellwp@gmail.com \
--cc=jmattson@google.com \
--cc=joro@8bytes.org \
--cc=kvm@vger.kernel.org \
--cc=linux-kernel@vger.kernel.org \
--cc=mjt@tls.msk.ru \
--cc=pbonzini@redhat.com \
--cc=seanjc@google.com \
--cc=tglx@linutronix.de \
--cc=vkuznets@redhat.com \
--cc=wanpengli@tencent.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.