[PATCH v2 5/6] KVM: arm64: ptdump: Extract kvm_ptdump_guest_open() from canonical ptdump path

[Wei-Lin Chang <weilin.chang@arm.com>]

Factor out kvm_ptdump_guest_open() so that the shadow ptdump can reuse
kvm_ptdump_guest_open().

Signed-off-by: Wei-Lin Chang <weilin.chang@arm.com>
---
 arch/arm64/kvm/ptdump.c | 18 ++++++++++++------
 1 file changed, 12 insertions(+), 6 deletions(-)

diff --git a/arch/arm64/kvm/ptdump.c b/arch/arm64/kvm/ptdump.c
index 0c9647666e65..40f93b7c7ad9 100644
--- a/arch/arm64/kvm/ptdump.c
+++ b/arch/arm64/kvm/ptdump.c
@@ -156,7 +156,7 @@ static struct kvm_ptdump_guest_state *kvm_ptdump_parser_create(struct kvm *kvm)
 	return st;
 }
 
-static int kvm_ptdump_guest_show(struct seq_file *m, void *unused)
+static int kvm_ptdump_guest_canonical_show(struct seq_file *m, void *unused)
 {
 	struct kvm_ptdump_guest_state *st = m->private;
 	struct kvm *kvm = st->kvm;
@@ -181,7 +181,8 @@ static int kvm_ptdump_guest_show(struct seq_file *m, void *unused)
 	return 0;
 }
 
-static int kvm_ptdump_guest_open(struct inode *m, struct file *file)
+static int kvm_ptdump_guest_open(struct inode *m, struct file *file,
+				 int (*show)(struct seq_file *, void *))
 {
 	struct kvm *kvm = m->i_private;
 	struct kvm_ptdump_guest_state *st;
@@ -196,7 +197,7 @@ static int kvm_ptdump_guest_open(struct inode *m, struct file *file)
 		goto err_with_kvm_ref;
 	}
 
-	ret = single_open(file, kvm_ptdump_guest_show, st);
+	ret = single_open(file, show, st);
 	if (!ret)
 		return 0;
 
@@ -206,6 +207,11 @@ static int kvm_ptdump_guest_open(struct inode *m, struct file *file)
 	return ret;
 }
 
+static int kvm_ptdump_guest_canonical_open(struct inode *m, struct file *file)
+{
+	return kvm_ptdump_guest_open(m, file, kvm_ptdump_guest_canonical_show);
+}
+
 static int kvm_ptdump_guest_close(struct inode *m, struct file *file)
 {
 	struct kvm *kvm = m->i_private;
@@ -217,8 +223,8 @@ static int kvm_ptdump_guest_close(struct inode *m, struct file *file)
 	return single_release(m, file);
 }
 
-static const struct file_operations kvm_ptdump_guest_fops = {
-	.open		= kvm_ptdump_guest_open,
+static const struct file_operations kvm_ptdump_guest_canonical_fops = {
+	.open		= kvm_ptdump_guest_canonical_open,
 	.read		= seq_read,
 	.llseek		= seq_lseek,
 	.release	= kvm_ptdump_guest_close,
@@ -296,7 +302,7 @@ static const struct file_operations kvm_pgtable_levels_fops = {
 void kvm_s2_ptdump_create_debugfs(struct kvm *kvm)
 {
 	debugfs_create_file("stage2_page_tables", 0400, kvm->debugfs_dentry,
-			    kvm, &kvm_ptdump_guest_fops);
+			    kvm, &kvm_ptdump_guest_canonical_fops);
 	debugfs_create_file("ipa_range", 0400, kvm->debugfs_dentry,
 			    kvm, &kvm_pgtable_range_fops);
 	debugfs_create_file("stage2_levels", 0400, kvm->debugfs_dentry,
-- 
2.43.0