[PATCH] printk: Make printk_emit() local function.

From: Tetsuo Handa
Date: Thu Nov 22 2018 - 10:00:55 EST


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@xxxxxxxxxxxxxxxxxxx>
---
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