+ printk-only-look-for-prefix-levels-in-kernel-messages.patch added to -mm tree

+ printk-only-look-for-prefix-levels-in-kernel-messages.patch added to -mm tree

[akpm]

The patch titled
     Subject: printk: only look for prefix levels in kernel messages
has been added to the -mm tree.  Its filename is
     printk-only-look-for-prefix-levels-in-kernel-messages.patch

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------------------------------------------------------
From: Joe Perches <joe@perches.com>
Subject: printk: only look for prefix levels in kernel messages

vprintk_emit() prefix parsing should only be done for internal kernel
messages.  This allows existing behavior to be kept in all cases.

Signed-off-by: Joe Perches <joe@perches.com>
Cc: Kay Sievers <kay@vrfy.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---

 kernel/printk.c |   32 +++++++++++++++++---------------
 1 file changed, 17 insertions(+), 15 deletions(-)

diff -puN kernel/printk.c~printk-only-look-for-prefix-levels-in-kernel-messages kernel/printk.c
--- a/kernel/printk.c~printk-only-look-for-prefix-levels-in-kernel-messages
+++ a/kernel/printk.c
@@ -1269,7 +1269,6 @@ asmlinkage int vprintk_emit(int facility
 	static char cont_buf[LOG_LINE_MAX];
 	static size_t cont_len;
 	static int cont_level;
-	int kern_level;
 	static struct task_struct *cont_task;
 	static char textbuf[LOG_LINE_MAX];
 	char *text = textbuf;
@@ -1331,21 +1330,24 @@ asmlinkage int vprintk_emit(int facility
 		newline = true;
 	}
 
-	/* strip syslog prefix and extract log level or control flags */
-	kern_level = printk_get_level(text);
-	if (kern_level) {
-		const char *end_of_header = printk_skip_level(text);
-		switch (kern_level) {
-		case '0' ... '7':
-			if (level == -1)
-				level = kern_level - '0';
-		case 'd':	/* KERN_DEFAULT */
-			prefix = true;
-		case 'c':	/* KERN_CONT */
-			break;
+	/* strip kernel syslog prefix and extract log level or control flags */
+	if (facility == 0) {
+		int kern_level = printk_get_level(text);
+
+		if (kern_level) {
+			const char *end_of_header = printk_skip_level(text);
+			switch (kern_level) {
+			case '0' ... '7':
+				if (level == -1)
+					level = kern_level - '0';
+			case 'd':	/* KERN_DEFAULT */
+				prefix = true;
+			case 'c':	/* KERN_CONT */
+				break;
+			}
+			text_len -= end_of_header - text;
+			text = (char *)end_of_header;
 		}
-		text_len -=  end_of_header - text;
-		text = (char *)end_of_header;
 	}
 
 	if (level == -1)
_
Subject: Subject: printk: only look for prefix levels in kernel messages

Patches currently in -mm which might be from joe@perches.com are

linux-next.patch
maintainers-whitespace-fixes.patch
printk-add-generic-functions-to-find-kern_level-headers.patch
printk-add-kern_levelsh-to-make-kern_level-available-for-asm-use.patch
arch-remove-direct-definitions-of-kern_level-uses.patch
btrfs-use-printk_get_level-and-printk_skip_level-add-__printf-fix-fallout.patch
btrfs-use-printk_get_level-and-printk_skip_level-add-__printf-fix-fallout-checkpatch-fixes.patch
sound-use-printk_get_level-and-printk_skip_level.patch
staging-wlags49_h2-remove-direct-declarations-of-kern_level-prefixes.patch
printk-convert-the-format-for-kern_level-to-a-2-byte-pattern.patch
printk-only-look-for-prefix-levels-in-kernel-messages.patch
printk-remove-the-now-unnecessary-c-annotation-for-kern_cont.patch