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authorKonrad Rzeszutek Wilk <konrad.wilk@oracle.com>2011-09-23 16:32:47 -0400
committerKonrad Rzeszutek Wilk <konrad.wilk@oracle.com>2011-09-23 22:22:32 -0400
commita867db10e89e12a3d97dedafdd411aa1527a6540 (patch)
tree0db5e4335a92447d47b0924c936993e187323de0 /arch/x86/xen
parent10fe570fc16721d78afdba9689720094527c1ba3 (diff)
xen/p2m: Make debug/xen/mmu/p2m visible again.
We dropped a lot of the MMU debugfs in favour of using tracing API - but there is one which just provides mostly static information that was made invisible by this change. Bring it back. Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Diffstat (limited to 'arch/x86/xen')
-rw-r--r--arch/x86/xen/mmu.c14
-rw-r--r--arch/x86/xen/p2m.c35
2 files changed, 32 insertions, 17 deletions
diff --git a/arch/x86/xen/mmu.c b/arch/x86/xen/mmu.c
index 3c9aecd09ed..4df0444b2ce 100644
--- a/arch/x86/xen/mmu.c
+++ b/arch/x86/xen/mmu.c
@@ -2362,17 +2362,3 @@ out:
return err;
}
EXPORT_SYMBOL_GPL(xen_remap_domain_mfn_range);
-
-#ifdef CONFIG_XEN_DEBUG_FS
-static int p2m_dump_open(struct inode *inode, struct file *filp)
-{
- return single_open(filp, p2m_dump_show, NULL);
-}
-
-static const struct file_operations p2m_dump_fops = {
- .open = p2m_dump_open,
- .read = seq_read,
- .llseek = seq_lseek,
- .release = single_release,
-};
-#endif /* CONFIG_XEN_DEBUG_FS */
diff --git a/arch/x86/xen/p2m.c b/arch/x86/xen/p2m.c
index 58efeb9d544..cc2f8dcf8dd 100644
--- a/arch/x86/xen/p2m.c
+++ b/arch/x86/xen/p2m.c
@@ -782,8 +782,9 @@ unsigned long m2p_find_override_pfn(unsigned long mfn, unsigned long pfn)
EXPORT_SYMBOL_GPL(m2p_find_override_pfn);
#ifdef CONFIG_XEN_DEBUG_FS
-
-int p2m_dump_show(struct seq_file *m, void *v)
+#include <linux/debugfs.h>
+#include "debugfs.h"
+static int p2m_dump_show(struct seq_file *m, void *v)
{
static const char * const level_name[] = { "top", "middle",
"entry", "abnormal" };
@@ -856,4 +857,32 @@ int p2m_dump_show(struct seq_file *m, void *v)
#undef TYPE_PFN
#undef TYPE_UNKNOWN
}
-#endif
+
+static int p2m_dump_open(struct inode *inode, struct file *filp)
+{
+ return single_open(filp, p2m_dump_show, NULL);
+}
+
+static const struct file_operations p2m_dump_fops = {
+ .open = p2m_dump_open,
+ .read = seq_read,
+ .llseek = seq_lseek,
+ .release = single_release,
+};
+
+static struct dentry *d_mmu_debug;
+
+static int __init xen_p2m_debugfs(void)
+{
+ struct dentry *d_xen = xen_init_debugfs();
+
+ if (d_xen == NULL)
+ return -ENOMEM;
+
+ d_mmu_debug = debugfs_create_dir("mmu", d_xen);
+
+ debugfs_create_file("p2m", 0600, d_mmu_debug, NULL, &p2m_dump_fops);
+ return 0;
+}
+fs_initcall(xen_p2m_debugfs);
+#endif /* CONFIG_XEN_DEBUG_FS */