linux-kernel - [PATCH printk v2 1/7] printk: Move buffer size defines

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Date:   Thu, 24 Nov 2022 00:19:54 +0106
From:   John Ogness <john.ogness@...utronix.de>
To:     Petr Mladek <pmladek@...e.com>
Cc:     Sergey Senozhatsky <senozhatsky@...omium.org>,
        Steven Rostedt <rostedt@...dmis.org>,
        Thomas Gleixner <tglx@...utronix.de>,
        linux-kernel@...r.kernel.org,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Subject: [PATCH printk v2 1/7] printk: Move buffer size defines

From: Thomas Gleixner <tglx@...utronix.de>

Move the buffer size defines to console.h in preparation of adding a
buffer structure. The new buffer structure will be embedded within
struct console. Therefore console.h was chosen as the new home for
these defines.

Signed-off-by: Thomas Gleixner <tglx@...utronix.de>
Signed-off-by: John Ogness <john.ogness@...utronix.de>
---
 include/linux/console.h | 14 ++++++++++++++
 include/linux/printk.h  |  2 --
 kernel/printk/printk.c  |  4 ----
 3 files changed, 14 insertions(+), 6 deletions(-)

diff --git a/include/linux/console.h b/include/linux/console.h
index 9cea254b34b8..799fc3216aad 100644
--- a/include/linux/console.h
+++ b/include/linux/console.h
@@ -122,6 +122,20 @@ static inline int con_debug_leave(void)
 #define CM_ERASE    (2)
 #define CM_MOVE     (3)
 
+#ifdef CONFIG_PRINTK
+
+/* The maximum size of a formatted record (i.e. with prefix added per line) */
+#define CONSOLE_LOG_MAX		1024
+
+#else
+
+#define CONSOLE_LOG_MAX		0
+
+#endif
+
+/* The maximum size of a formatted extended record */
+#define CONSOLE_EXT_LOG_MAX	8192
+
 /*
  * The interface for a console, or any other device that wants to capture
  * console messages (printer driver?)
diff --git a/include/linux/printk.h b/include/linux/printk.h
index 8c81806c2e99..8ef499ab3c1e 100644
--- a/include/linux/printk.h
+++ b/include/linux/printk.h
@@ -44,8 +44,6 @@ static inline const char *printk_skip_headers(const char *buffer)
 	return buffer;
 }
 
-#define CONSOLE_EXT_LOG_MAX	8192
-
 /* 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 9ec101766471..a4854a60e6d8 100644
--- a/kernel/printk/printk.c
+++ b/kernel/printk/printk.c
@@ -471,9 +471,6 @@ static struct latched_seq clear_seq = {
 #define PREFIX_MAX		32
 #endif
 
-/* the maximum size of a formatted record (i.e. with prefix added per line) */
-#define CONSOLE_LOG_MAX		1024
-
 /* the maximum size for a dropped text message */
 #define DROPPED_TEXT_MAX	64
 
@@ -2387,7 +2384,6 @@ static bool __pr_flush(struct console *con, int timeout_ms, bool reset_on_progre
 
 #else /* CONFIG_PRINTK */
 
-#define CONSOLE_LOG_MAX		0
 #define DROPPED_TEXT_MAX	0
 #define printk_time		false
 
-- 
2.30.2