linux-kernel - [patch RFC 15/29] printk: Add struct cons_text

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Date:   Sun, 11 Sep 2022 00:27:55 +0200 (CEST)
From:   Thomas Gleixner <tglx@...utronix.de>
To:     LKML <linux-kernel@...r.kernel.org>
Cc:     John Ogness <john.ogness@...utronix.de>,
        Petr Mladek <pmladek@...e.com>,
        Sergey Senozhatsky <senozhatsky@...omium.org>,
        Steven Rostedt <rostedt@...dmis.org>,
        Linus Torvalds <torvalds@...uxfoundation.org>,
        Peter Zijlstra <peterz@...radead.org>,
        "Paul E. McKenney" <paulmck@...nel.org>,
        Daniel Vetter <daniel@...ll.ch>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Helge Deller <deller@....de>,
        Jason Wessel <jason.wessel@...driver.com>,
        Daniel Thompson <daniel.thompson@...aro.org>
Subject: [patch RFC 15/29] printk: Add struct cons_text_buf

Create a data structure to replace the open coded seperate buffers for
regular and extended formatting.

Signed-off-by: Thomas Gleixner <tglx@...utronix.de>
---
 include/linux/console.h |   14 ++++++++++++++
 1 file changed, 14 insertions(+)

--- a/include/linux/console.h
+++ b/include/linux/console.h
@@ -173,6 +173,20 @@ enum cons_flags {
 };
 
 /**
+ * struct cons_text_buf - console output text buffer
+ * @ext_text:		Buffer for extended log format text
+ * @dropped_text:	Buffer for dropped text
+ * @text:		Buffer for ringbuffer text
+ */
+struct cons_text_buf {
+	union {
+		char	ext_text[CONSOLE_EXT_LOG_MAX];
+		char	dropped_text[DROPPED_TEXT_MAX];
+	};
+	char		text[CONSOLE_LOG_MAX];
+};
+
+/**
  * struct console - The console descriptor structure
  * @name:		The name of the console driver
  * @write:		Write callback to output messages (Optional)