zte's code,first commit
Change-Id: I9a04da59e459a9bc0d67f101f700d9d7dc8d681b
diff --git a/ap/os/linux/linux-3.4.x/fs/jfs/jfs_debug.c b/ap/os/linux/linux-3.4.x/fs/jfs/jfs_debug.c
new file mode 100644
index 0000000..dd824d9
--- /dev/null
+++ b/ap/os/linux/linux-3.4.x/fs/jfs/jfs_debug.c
@@ -0,0 +1,109 @@
+/*
+ * Copyright (C) International Business Machines Corp., 2000-2004
+ * Portions Copyright (C) Christoph Hellwig, 2001-2002
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See
+ * the GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ */
+
+#include <linux/fs.h>
+#include <linux/ctype.h>
+#include <linux/module.h>
+#include <linux/proc_fs.h>
+#include <linux/seq_file.h>
+#include <asm/uaccess.h>
+#include "jfs_incore.h"
+#include "jfs_filsys.h"
+#include "jfs_debug.h"
+
+#ifdef PROC_FS_JFS /* see jfs_debug.h */
+
+static struct proc_dir_entry *base;
+#ifdef CONFIG_JFS_DEBUG
+static int jfs_loglevel_proc_show(struct seq_file *m, void *v)
+{
+ seq_printf(m, "%d\n", jfsloglevel);
+ return 0;
+}
+
+static int jfs_loglevel_proc_open(struct inode *inode, struct file *file)
+{
+ return single_open(file, jfs_loglevel_proc_show, NULL);
+}
+
+static ssize_t jfs_loglevel_proc_write(struct file *file,
+ const char __user *buffer, size_t count, loff_t *ppos)
+{
+ char c;
+
+ if (get_user(c, buffer))
+ return -EFAULT;
+
+ /* yes, I know this is an ASCIIism. --hch */
+ if (c < '0' || c > '9')
+ return -EINVAL;
+ jfsloglevel = c - '0';
+ return count;
+}
+
+static const struct file_operations jfs_loglevel_proc_fops = {
+ .owner = THIS_MODULE,
+ .open = jfs_loglevel_proc_open,
+ .read = seq_read,
+ .llseek = seq_lseek,
+ .release = single_release,
+ .write = jfs_loglevel_proc_write,
+};
+#endif
+
+static struct {
+ const char *name;
+ const struct file_operations *proc_fops;
+} Entries[] = {
+#ifdef CONFIG_JFS_STATISTICS
+ { "lmstats", &jfs_lmstats_proc_fops, },
+ { "txstats", &jfs_txstats_proc_fops, },
+ { "xtstat", &jfs_xtstat_proc_fops, },
+ { "mpstat", &jfs_mpstat_proc_fops, },
+#endif
+#ifdef CONFIG_JFS_DEBUG
+ { "TxAnchor", &jfs_txanchor_proc_fops, },
+ { "loglevel", &jfs_loglevel_proc_fops }
+#endif
+};
+#define NPROCENT ARRAY_SIZE(Entries)
+
+void jfs_proc_init(void)
+{
+ int i;
+
+ if (!(base = proc_mkdir("fs/jfs", NULL)))
+ return;
+
+ for (i = 0; i < NPROCENT; i++)
+ proc_create(Entries[i].name, 0, base, Entries[i].proc_fops);
+}
+
+void jfs_proc_clean(void)
+{
+ int i;
+
+ if (base) {
+ for (i = 0; i < NPROCENT; i++)
+ remove_proc_entry(Entries[i].name, base);
+ remove_proc_entry("fs/jfs", NULL);
+ }
+}
+
+#endif /* PROC_FS_JFS */