timekeeping: Convert to DEFINE_SHOW_ATTRIBUTE

Use DEFINE_SHOW_ATTRIBUTE macro to simplify the code.

Signed-off-by: Yangtao Li <tiny.windzz@gmail.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: john.stultz@linaro.org
Cc: sboyd@kernel.org
Link: https://lkml.kernel.org/r/20181211163744.22133-1-tiny.windzz@gmail.com

diff --git a/kernel/time/timekeeping_debug.c b/kernel/time/timekeeping_debug.c
index f811882cfd1349ac8bb8ac9bc2d31102de7fc190..86489950d6902505fa071422b50c6d899029d233 100644 (file)
--- a/kernel/time/timekeeping_debug.c
+++ b/kernel/time/timekeeping_debug.c
@@ -19,7 +19,7 @@
 
 static unsigned int sleep_time_bin[NUM_BINS] = {0};
 
-static int tk_debug_show_sleep_time(struct seq_file *s, void *data)
+static int tk_debug_sleep_time_show(struct seq_file *s, void *data)
 {
        unsigned int bin;
        seq_puts(s, "      time (secs)        count\n");
@@ -33,18 +33,7 @@ static int tk_debug_show_sleep_time(struct seq_file *s, void *data)
        }
        return 0;
 }
-
-static int tk_debug_sleep_time_open(struct inode *inode, struct file *file)
-{
-       return single_open(file, tk_debug_show_sleep_time, NULL);
-}
-
-static const struct file_operations tk_debug_sleep_time_fops = {
-       .open           = tk_debug_sleep_time_open,
-       .read           = seq_read,
-       .llseek         = seq_lseek,
-       .release        = single_release,
-};
+DEFINE_SHOW_ATTRIBUTE(tk_debug_sleep_time);
 
 static int __init tk_debug_sleep_time_init(void)
 {