linux-kernel - [PATCH] printk: Make printk

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Message-Id: <1542898768-5732-1-git-send-email-penguin-kernel@I-love.SAKURA.ne.jp>
Date:   Thu, 22 Nov 2018 23:59:28 +0900
From:   Tetsuo Handa <penguin-kernel@...ove.SAKURA.ne.jp>
To:     Petr Mladek <pmladek@...e.com>,
        Sergey Senozhatsky <sergey.senozhatsky@...il.com>,
        Steven Rostedt <rostedt@...dmis.org>
Cc:     linux-kernel@...r.kernel.org,
        Tetsuo Handa <penguin-kernel@...ove.SAKURA.ne.jp>
Subject: [PATCH] printk: Make printk_emit() local function.

printk_emit() is called from only devkmsg_write() in the same file.
Save object size by making it a local function.

Signed-off-by: Tetsuo Handa <penguin-kernel@...ove.SAKURA.ne.jp>
---
 include/linux/printk.h |  5 -----
 kernel/printk/printk.c | 31 +++++++++++++++----------------
 2 files changed, 15 insertions(+), 21 deletions(-)

diff --git a/include/linux/printk.h b/include/linux/printk.h
index cf3eccf..55aa969 100644
--- a/include/linux/printk.h
+++ b/include/linux/printk.h
@@ -166,11 +166,6 @@ int vprintk_emit(int facility, int level,
 asmlinkage __printf(1, 0)
 int vprintk(const char *fmt, va_list args);
 
-asmlinkage __printf(5, 6) __cold
-int printk_emit(int facility, int level,
-		const char *dict, size_t dictlen,
-		const char *fmt, ...);
-
 asmlinkage __printf(1, 2) __cold
 int printk(const char *fmt, ...);
 
diff --git a/kernel/printk/printk.c b/kernel/printk/printk.c
index 1b2a029..315718b 100644
--- a/kernel/printk/printk.c
+++ b/kernel/printk/printk.c
@@ -752,6 +752,20 @@ struct devkmsg_user {
 	char buf[CONSOLE_EXT_LOG_MAX];
 };
 
+static __printf(3, 4) __cold int devkmsg_emit(int facility, int level,
+					      const char *fmt, ...);
+static int devkmsg_emit(int facility, int level, const char *fmt, ...)
+{
+	va_list args;
+	int r;
+
+	va_start(args, fmt);
+	r = vprintk_emit(facility, level, NULL, 0, fmt, args);
+	va_end(args);
+
+	return r;
+}
+
 static ssize_t devkmsg_write(struct kiocb *iocb, struct iov_iter *from)
 {
 	char *buf, *line;
@@ -810,7 +824,7 @@ static ssize_t devkmsg_write(struct kiocb *iocb, struct iov_iter *from)
 		}
 	}
 
-	printk_emit(facility, level, NULL, 0, "%s", line);
+	devkmsg_emit(facility, level, "%s", line);
 	kfree(buf);
 	return ret;
 }
@@ -1935,21 +1949,6 @@ asmlinkage int vprintk(const char *fmt, va_list args)
 }
 EXPORT_SYMBOL(vprintk);
 
-asmlinkage int printk_emit(int facility, int level,
-			   const char *dict, size_t dictlen,
-			   const char *fmt, ...)
-{
-	va_list args;
-	int r;
-
-	va_start(args, fmt);
-	r = vprintk_emit(facility, level, dict, dictlen, fmt, args);
-	va_end(args);
-
-	return r;
-}
-EXPORT_SYMBOL(printk_emit);
-
 int vprintk_default(const char *fmt, va_list args)
 {
 	int r;
-- 
1.8.3.1