linux-kernel - [PATCH next v3 2/3] printk: define CONSOLE_LOG

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Date:   Mon,  7 Dec 2020 23:26:19 +0106
From:   John Ogness <john.ogness@...utronix.de>
To:     Petr Mladek <pmladek@...e.com>
Cc:     Sergey Senozhatsky <sergey.senozhatsky.work@...il.com>,
        Sergey Senozhatsky <sergey.senozhatsky@...il.com>,
        Steven Rostedt <rostedt@...dmis.org>,
        Linus Torvalds <torvalds@...ux-foundation.org>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Thomas Gleixner <tglx@...utronix.de>,
        linux-kernel@...r.kernel.org
Subject: [PATCH next v3 2/3] printk: define CONSOLE_LOG_MAX in printk.h

CONSOLE_EXT_LOG_MAX for extended console messages is already defined
in printk.h. Define CONSOLE_LOG_MAX there as well so that future
changes can make use of the constant for non-extended console
messages.

Signed-off-by: John Ogness <john.ogness@...utronix.de>
---
 include/linux/printk.h | 1 +
 kernel/printk/printk.c | 2 +-
 2 files changed, 2 insertions(+), 1 deletion(-)

diff --git a/include/linux/printk.h b/include/linux/printk.h
index fe7eb2351610..6d8f844bfdff 100644
--- a/include/linux/printk.h
+++ b/include/linux/printk.h
@@ -45,6 +45,7 @@ static inline const char *printk_skip_headers(const char *buffer)
 }
 
 #define CONSOLE_EXT_LOG_MAX	8192
+#define CONSOLE_LOG_MAX		1024
 
 /* printk's without a loglevel use this.. */
 #define MESSAGE_LOGLEVEL_DEFAULT CONFIG_MESSAGE_LOGLEVEL_DEFAULT
diff --git a/kernel/printk/printk.c b/kernel/printk/printk.c
index bf5fd2be3a05..e1f068677a74 100644
--- a/kernel/printk/printk.c
+++ b/kernel/printk/printk.c
@@ -410,7 +410,7 @@ static u64 clear_seq;
 #else
 #define PREFIX_MAX		32
 #endif
-#define LOG_LINE_MAX		(1024 - PREFIX_MAX)
+#define LOG_LINE_MAX		(CONSOLE_LOG_MAX - PREFIX_MAX)
 
 #define LOG_LEVEL(v)		((v) & 0x07)
 #define LOG_FACILITY(v)		((v) >> 3 & 0xff)
-- 
2.20.1