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KVM: remove kvm_arch_has_vcpu_debugfs()

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There is no need for this function as all arches have to implement
kvm_arch_create_vcpu_debugfs() no matter what.  A #define symbol
let us actually simplify the code.

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
This commit is contained in:
Paolo Bonzini 2019-08-03 08:14:25 +02:00
parent 17e433b543
commit 741cbbae07
8 changed files with 6 additions and 44 deletions
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10
arch/mips/kvm/mips.c
View File

@ -150,16 +150,6 @@ int kvm_arch_init_vm(struct kvm *kvm, unsigned long type)
return 0;
}
bool kvm_arch_has_vcpu_debugfs(void)
{
return false;
}
int kvm_arch_create_vcpu_debugfs(struct kvm_vcpu *vcpu)
{
return 0;
}
void kvm_mips_free_vcpus(struct kvm *kvm)
{
unsigned int i;

10
arch/powerpc/kvm/powerpc.c
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@ -457,16 +457,6 @@ err_out:
return -EINVAL;
}
bool kvm_arch_has_vcpu_debugfs(void)
{
return false;
}
int kvm_arch_create_vcpu_debugfs(struct kvm_vcpu *vcpu)
{
return 0;
}
void kvm_arch_destroy_vm(struct kvm *kvm)
{
unsigned int i;

10
arch/s390/kvm/kvm-s390.c
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@ -2516,16 +2516,6 @@ out_err:
return rc;
}
bool kvm_arch_has_vcpu_debugfs(void)
{
return false;
}
int kvm_arch_create_vcpu_debugfs(struct kvm_vcpu *vcpu)
{
return 0;
}
void kvm_arch_vcpu_destroy(struct kvm_vcpu *vcpu)
{
VCPU_EVENT(vcpu, 3, "%s", "free cpu");

2
arch/x86/include/asm/kvm_host.h
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@ -35,6 +35,8 @@
#include <asm/kvm_vcpu_regs.h>
#include <asm/hyperv-tlfs.h>
#define __KVM_HAVE_ARCH_VCPU_DEBUGFS
#define KVM_MAX_VCPUS 288
#define KVM_SOFT_MAX_VCPUS 240
#define KVM_MAX_VCPU_ID 1023

5
arch/x86/kvm/debugfs.c
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@ -8,11 +8,6 @@
#include <linux/debugfs.h>
#include "lapic.h"
bool kvm_arch_has_vcpu_debugfs(void)
{
return true;
}
static int vcpu_get_timer_advance_ns(void *data, u64 *val)
{
struct kvm_vcpu *vcpu = (struct kvm_vcpu *) data;

3
include/linux/kvm_host.h
View File

@ -861,8 +861,9 @@ int kvm_arch_vcpu_setup(struct kvm_vcpu *vcpu);
void kvm_arch_vcpu_postcreate(struct kvm_vcpu *vcpu);
void kvm_arch_vcpu_destroy(struct kvm_vcpu *vcpu);
bool kvm_arch_has_vcpu_debugfs(void);
#ifdef __KVM_HAVE_ARCH_VCPU_DEBUGFS
int kvm_arch_create_vcpu_debugfs(struct kvm_vcpu *vcpu);
#endif
int kvm_arch_hardware_enable(void);
void kvm_arch_hardware_disable(void);

5
virt/kvm/arm/arm.c
View File

@ -144,11 +144,6 @@ out_fail_alloc:
return ret;
}
bool kvm_arch_has_vcpu_debugfs(void)
{
return false;
}
int kvm_arch_create_vcpu_debugfs(struct kvm_vcpu *vcpu)
{
return 0;

5
virt/kvm/kvm_main.c
View File

@ -2617,12 +2617,10 @@ static int create_vcpu_fd(struct kvm_vcpu *vcpu)
static int kvm_create_vcpu_debugfs(struct kvm_vcpu *vcpu)
{
#ifdef __KVM_HAVE_ARCH_VCPU_DEBUGFS
char dir_name[ITOA_MAX_LEN * 2];
int ret;
if (!kvm_arch_has_vcpu_debugfs())
return 0;
if (!debugfs_initialized())
return 0;
@ -2637,6 +2635,7 @@ static int kvm_create_vcpu_debugfs(struct kvm_vcpu *vcpu)
debugfs_remove_recursive(vcpu->debugfs_dentry);
return ret;
}
#endif
return 0;
}