linux-kernel - [PATCH 5/9] KVM: inline is_*

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Date:	Sun, 29 Jul 2012 16:15:07 +0800
From:	Xiao Guangrong <xiaoguangrong@...ux.vnet.ibm.com>
To:	Xiao Guangrong <xiaoguangrong@...ux.vnet.ibm.com>
CC:	Avi Kivity <avi@...hat.com>, Marcelo Tosatti <mtosatti@...hat.com>,
	LKML <linux-kernel@...r.kernel.org>, KVM <kvm@...r.kernel.org>
Subject: [PATCH 5/9] KVM: inline is_*_pfn functions

These functions are exported and can not inline, move them
to kvm_host.h to eliminate the overload of function call

Signed-off-by: Xiao Guangrong <xiaoguangrong@...ux.vnet.ibm.com>
---
 include/linux/kvm_host.h |   19 ++++++++++++++++---
 virt/kvm/kvm_main.c      |   18 ------------------
 2 files changed, 16 insertions(+), 21 deletions(-)

diff --git a/include/linux/kvm_host.h b/include/linux/kvm_host.h
index b02203f..98255ce 100644
--- a/include/linux/kvm_host.h
+++ b/include/linux/kvm_host.h
@@ -21,6 +21,7 @@
 #include <linux/slab.h>
 #include <linux/rcupdate.h>
 #include <linux/ratelimit.h>
+#include <linux/err.h>
 #include <asm/signal.h>

 #include <linux/kvm.h>
@@ -52,6 +53,21 @@
 #define kvm_hwpoison_pfn	(-EHWPOISON)
 #define kvm_bad_pfn		(-ENOENT)

+static inline int is_error_pfn(pfn_t pfn)
+{
+	return IS_ERR_VALUE(pfn);
+}
+
+static inline int is_noslot_pfn(pfn_t pfn)
+{
+	return pfn == -ENOENT;
+}
+
+static inline int is_invalid_pfn(pfn_t pfn)
+{
+	return !is_noslot_pfn(pfn) && is_error_pfn(pfn);
+}
+
 /*
  * vcpu->requests bit members
  */
@@ -397,9 +413,6 @@ id_to_memslot(struct kvm_memslots *slots, int id)
 extern struct page *bad_page;

 int is_error_page(struct page *page);
-int is_error_pfn(pfn_t pfn);
-int is_noslot_pfn(pfn_t pfn);
-int is_invalid_pfn(pfn_t pfn);
 int kvm_is_error_hva(unsigned long addr);
 int kvm_set_memory_region(struct kvm *kvm,
 			  struct kvm_userspace_memory_region *mem,
diff --git a/virt/kvm/kvm_main.c b/virt/kvm/kvm_main.c
index da16191..51aaba4 100644
--- a/virt/kvm/kvm_main.c
+++ b/virt/kvm/kvm_main.c
@@ -937,24 +937,6 @@ int is_error_page(struct page *page)
 }
 EXPORT_SYMBOL_GPL(is_error_page);

-int is_error_pfn(pfn_t pfn)
-{
-	return IS_ERR_VALUE(pfn);
-}
-EXPORT_SYMBOL_GPL(is_error_pfn);
-
-int is_noslot_pfn(pfn_t pfn)
-{
-	return pfn == -ENOENT;
-}
-EXPORT_SYMBOL_GPL(is_noslot_pfn);
-
-int is_invalid_pfn(pfn_t pfn)
-{
-	return !is_noslot_pfn(pfn) && is_error_pfn(pfn);
-}
-EXPORT_SYMBOL_GPL(is_invalid_pfn);
-
 struct page *get_bad_page(void)
 {
 	return ERR_PTR(-ENOENT);
-- 
1.7.7.6

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