printk: do not compute the size of the message twice

This is just a tiny optimization.  It removes duplicate computation of
the message size.

Signed-off-by: Petr Mladek <pmladek@suse.cz>
Cc: Steven Rostedt <rostedt@goodmis.org>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Jan Kara <jack@suse.cz>
Cc: Michal Hocko <mhocko@suse.cz>
Cc: Kay Sievers <kay@vrfy.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

diff --git a/kernel/printk/printk.c b/kernel/printk/printk.c
index b3a1790f9e055433a223da60a2f8c4675a19f9c2..ff9faf4e3cd5955bae7e2b55e23b36de54459c3f 100644 (file)
--- a/kernel/printk/printk.c
+++ b/kernel/printk/printk.c
@@ -351,7 +351,7 @@ static void log_store(int facility, int level,
        else
                msg->ts_nsec = local_clock();
        memset(log_dict(msg) + dict_len, 0, pad_len);
-       msg->len = sizeof(struct printk_log) + text_len + dict_len + pad_len;
+       msg->len = size;
 
        /* insert message */
        log_next_idx += msg->len;