Subject: + printk-do-not-compute-the-size-of-the-message-twice.patch added to -mm tree
To: pmladek@xxxxxxx,fweisbec@xxxxxxxxx,jack@xxxxxxx,kay@xxxxxxxx,mhocko@xxxxxxx,rostedt@xxxxxxxxxxx
From: akpm@xxxxxxxxxxxxxxxxxxxx
Date: Tue, 18 Feb 2014 13:03:46 -0800
The patch titled
Subject: printk: do not compute the size of the message twice
has been added to the -mm tree. Its filename is
printk-do-not-compute-the-size-of-the-message-twice.patch
This patch should soon appear at
http://ozlabs.org/~akpm/mmots/broken-out/printk-do-not-compute-the-size-of-the-message-twice.patch
and later at
http://ozlabs.org/~akpm/mmotm/broken-out/printk-do-not-compute-the-size-of-the-message-twice.patch
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------------------------------------------------------
From: Petr Mladek <pmladek@xxxxxxx>
Subject: 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@xxxxxxx>
Cc: Steven Rostedt <rostedt@xxxxxxxxxxx>
Cc: Frederic Weisbecker <fweisbec@xxxxxxxxx>
Cc: Jan Kara <jack@xxxxxxx>
Cc: Michal Hocko <mhocko@xxxxxxx>
Cc: Kay Sievers <kay@xxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
kernel/printk/printk.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff -puN kernel/printk/printk.c~printk-do-not-compute-the-size-of-the-message-twice kernel/printk/printk.c
--- a/kernel/printk/printk.c~printk-do-not-compute-the-size-of-the-message-twice
+++ a/kernel/printk/printk.c
@@ -351,7 +351,7 @@ static void log_store(int facility, int
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;
_
Patches currently in -mm which might be from pmladek@xxxxxxx are
printk-remove-duplicated-check-for-log-level.patch
printk-remove-obsolete-check-for-log-level-c.patch
printk-add-comment-about-tricky-check-for-text-buffer-size.patch
printk-use-also-the-last-bytes-in-the-ring-buffer.patch
printk-do-not-compute-the-size-of-the-message-twice.patch
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