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Date: Wed, 26 Aug 2009 13:29:32 +0300
From: Avi Kivity <avi@...hat.com>
To: kvm@...r.kernel.org
Cc: linux-kernel@...r.kernel.org
Subject: [PATCH 10/47] KVM: Replace pic_lock()/pic_unlock() with direct call to spinlock functions
From: Gleb Natapov <gleb@...hat.com>
They are not doing anything else now.
Signed-off-by: Gleb Natapov <gleb@...hat.com>
Signed-off-by: Avi Kivity <avi@...hat.com>
---
arch/x86/kvm/i8259.c | 36 ++++++++++++------------------------
1 files changed, 12 insertions(+), 24 deletions(-)
diff --git a/arch/x86/kvm/i8259.c b/arch/x86/kvm/i8259.c
index 3aacd33..01f1516 100644
--- a/arch/x86/kvm/i8259.c
+++ b/arch/x86/kvm/i8259.c
@@ -32,18 +32,6 @@
#include <linux/kvm_host.h>
#include "trace.h"
-static void pic_lock(struct kvm_pic *s)
- __acquires(&s->lock)
-{
- spin_lock(&s->lock);
-}
-
-static void pic_unlock(struct kvm_pic *s)
- __releases(&s->lock)
-{
- spin_unlock(&s->lock);
-}
-
static void pic_clear_isr(struct kvm_kpic_state *s, int irq)
{
s->isr &= ~(1 << irq);
@@ -56,10 +44,10 @@ static void pic_clear_isr(struct kvm_kpic_state *s, int irq)
void kvm_pic_clear_isr_ack(struct kvm *kvm)
{
struct kvm_pic *s = pic_irqchip(kvm);
- pic_lock(s);
+ spin_lock(&s->lock);
s->pics[0].isr_ack = 0xff;
s->pics[1].isr_ack = 0xff;
- pic_unlock(s);
+ spin_unlock(&s->lock);
}
/*
@@ -160,9 +148,9 @@ static void pic_update_irq(struct kvm_pic *s)
void kvm_pic_update_irq(struct kvm_pic *s)
{
- pic_lock(s);
+ spin_lock(&s->lock);
pic_update_irq(s);
- pic_unlock(s);
+ spin_unlock(&s->lock);
}
int kvm_pic_set_irq(void *opaque, int irq, int level)
@@ -170,14 +158,14 @@ int kvm_pic_set_irq(void *opaque, int irq, int level)
struct kvm_pic *s = opaque;
int ret = -1;
- pic_lock(s);
+ spin_lock(&s->lock);
if (irq >= 0 && irq < PIC_NUM_PINS) {
ret = pic_set_irq1(&s->pics[irq >> 3], irq & 7, level);
pic_update_irq(s);
trace_kvm_pic_set_irq(irq >> 3, irq & 7, s->pics[irq >> 3].elcr,
s->pics[irq >> 3].imr, ret == 0);
}
- pic_unlock(s);
+ spin_unlock(&s->lock);
return ret;
}
@@ -205,7 +193,7 @@ int kvm_pic_read_irq(struct kvm *kvm)
int irq, irq2, intno;
struct kvm_pic *s = pic_irqchip(kvm);
- pic_lock(s);
+ spin_lock(&s->lock);
irq = pic_get_irq(&s->pics[0]);
if (irq >= 0) {
pic_intack(&s->pics[0], irq);
@@ -230,7 +218,7 @@ int kvm_pic_read_irq(struct kvm *kvm)
intno = s->pics[0].irq_base + irq;
}
pic_update_irq(s);
- pic_unlock(s);
+ spin_unlock(&s->lock);
return intno;
}
@@ -448,7 +436,7 @@ static int picdev_write(struct kvm_io_device *this,
printk(KERN_ERR "PIC: non byte write\n");
return 0;
}
- pic_lock(s);
+ spin_lock(&s->lock);
switch (addr) {
case 0x20:
case 0x21:
@@ -461,7 +449,7 @@ static int picdev_write(struct kvm_io_device *this,
elcr_ioport_write(&s->pics[addr & 1], addr, data);
break;
}
- pic_unlock(s);
+ spin_unlock(&s->lock);
return 0;
}
@@ -478,7 +466,7 @@ static int picdev_read(struct kvm_io_device *this,
printk(KERN_ERR "PIC: non byte read\n");
return 0;
}
- pic_lock(s);
+ spin_lock(&s->lock);
switch (addr) {
case 0x20:
case 0x21:
@@ -492,7 +480,7 @@ static int picdev_read(struct kvm_io_device *this,
break;
}
*(unsigned char *)val = data;
- pic_unlock(s);
+ spin_unlock(&s->lock);
return 0;
}
--
1.6.4.1
--
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