proc: introduce proc_create_seq{,_data}

Variants of proc_create{,_data} that directly take a struct seq_operations
argument and drastically reduces the boilerplate code in the callers.

All trivial callers converted over.

Signed-off-by: Christoph Hellwig <hch@lst.de>

2 files changed, 11 insertions, 1 deletions

diff --git a/include/linux/proc_fs.h b/include/linux/proc_fs.h
index 4edcde510631..f368a896a8cb 100644
--- a/include/linux/proc_fs.h
+++ b/include/linux/proc_fs.h
@@ -9,6 +9,7 @@
 #include <linux/fs.h>
 
 struct proc_dir_entry;
+struct seq_operations;
 
 #ifdef CONFIG_PROC_FS
 
@@ -23,6 +24,12 @@ extern struct proc_dir_entry *proc_mkdir_data(const char *, umode_t,
 extern struct proc_dir_entry *proc_mkdir_mode(const char *, umode_t,
 					      struct proc_dir_entry *);
 struct proc_dir_entry *proc_create_mount_point(const char *name);
+
+struct proc_dir_entry *proc_create_seq_data(const char *name, umode_t mode,
+		struct proc_dir_entry *parent, const struct seq_operations *ops,
+		void *data);
+#define proc_create_seq(name, mode, parent, ops) \
+	proc_create_seq_data(name, mode, parent, ops, NULL)
  
 extern struct proc_dir_entry *proc_create_data(const char *, umode_t,
 					       struct proc_dir_entry *,
@@ -57,6 +64,8 @@ static inline struct proc_dir_entry *proc_mkdir_data(const char *name,
 	umode_t mode, struct proc_dir_entry *parent, void *data) { return NULL; }
 static inline struct proc_dir_entry *proc_mkdir_mode(const char *name,
 	umode_t mode, struct proc_dir_entry *parent) { return NULL; }
+#define proc_create_seq_data(name, mode, parent, ops, data) ({NULL;})
+#define proc_create_seq(name, mode, parent, ops) ({NULL;})
 #define proc_create(name, mode, parent, proc_fops) ({NULL;})
 #define proc_create_data(name, mode, parent, proc_fops, data) ({NULL;})
 
diff --git a/include/linux/tty.h b/include/linux/tty.h
index 1dd587ba6d88..9bd7d37adbfa 100644
--- a/include/linux/tty.h
+++ b/include/linux/tty.h
@@ -10,6 +10,7 @@
 #include <linux/tty_ldisc.h>
 #include <linux/mutex.h>
 #include <linux/tty_flags.h>
+#include <linux/seq_file.h>
 #include <uapi/linux/tty.h>
 #include <linux/rwsem.h>
 #include <linux/llist.h>
@@ -535,7 +536,7 @@ extern void tty_ldisc_deref(struct tty_ldisc *);
 extern struct tty_ldisc *tty_ldisc_ref_wait(struct tty_struct *);
 extern void tty_ldisc_hangup(struct tty_struct *tty, bool reset);
 extern int tty_ldisc_reinit(struct tty_struct *tty, int disc);
-extern const struct file_operations tty_ldiscs_proc_fops;
+extern const struct seq_operations tty_ldiscs_seq_ops;
 
 extern void tty_wakeup(struct tty_struct *tty);
 extern void tty_ldisc_flush(struct tty_struct *tty);