proc: more "const char *" pointers

Signed-off-by: NAlexey Dobriyan <adobriyan@gmail.com>
Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>

fs/proc/base.c

@@ -105,7 +105,7 @@
  */
 
 struct pid_entry {
-	char *name;
+	const char *name;
 	int len;
 	umode_t mode;
 	const struct inode_operations *iop;
@@ -418,8 +418,8 @@ static int proc_oom_score(struct task_struct *task, char *buffer)
 }
 
 struct limit_names {
-	char *name;
-	char *unit;
+	const char *name;
+	const char *unit;
 };
 
 static const struct limit_names lnames[RLIM_NLIMITS] = {
@@ -2056,7 +2056,7 @@ static int show_timer(struct seq_file *m, void *v)
 	struct k_itimer *timer;
 	struct timers_private *tp = m->private;
 	int notify;
-	static char *nstr[] = {
+	static const char * const nstr[] = {
 		[SIGEV_SIGNAL] = "signal",
 		[SIGEV_NONE] = "none",
 		[SIGEV_THREAD] = "thread",