[v1] erofs: simplify definition of the log functions

[PATCH] erofs: simplify definition of the log functions

Posted by Gou Hao 1 month, 1 week ago

using printk instead of pr_info/err, reduce
redundant code.

Signed-off-by: Gou Hao <gouhao@uniontech.com>
---
 fs/erofs/internal.h |  9 ++++-----
 fs/erofs/super.c    | 28 +++++++---------------------
 2 files changed, 11 insertions(+), 26 deletions(-)

diff --git a/fs/erofs/internal.h b/fs/erofs/internal.h
index 4efd578d7c62..ae87e855e815 100644
--- a/fs/erofs/internal.h
+++ b/fs/erofs/internal.h
@@ -24,14 +24,13 @@
 #undef pr_fmt
 #define pr_fmt(fmt) "erofs: " fmt
 
-__printf(3, 4) void _erofs_err(struct super_block *sb,
+__printf(3, 4) void _erofs_printk(struct super_block *sb,
 			       const char *function, const char *fmt, ...);
 #define erofs_err(sb, fmt, ...)	\
-	_erofs_err(sb, __func__, fmt "\n", ##__VA_ARGS__)
-__printf(3, 4) void _erofs_info(struct super_block *sb,
-			       const char *function, const char *fmt, ...);
+	_erofs_printk(sb, __func__, KERN_ERR fmt "\n", ##__VA_ARGS__)
 #define erofs_info(sb, fmt, ...) \
-	_erofs_info(sb, __func__, fmt "\n", ##__VA_ARGS__)
+	_erofs_printk(sb, __func__, KERN_INFO fmt "\n", ##__VA_ARGS__)
+
 #ifdef CONFIG_EROFS_FS_DEBUG
 #define DBG_BUGON               BUG_ON
 #else
diff --git a/fs/erofs/super.c b/fs/erofs/super.c
index 666873f745da..64c3258ddf9a 100644
--- a/fs/erofs/super.c
+++ b/fs/erofs/super.c
@@ -18,37 +18,23 @@
 
 static struct kmem_cache *erofs_inode_cachep __read_mostly;
 
-void _erofs_err(struct super_block *sb, const char *func, const char *fmt, ...)
+void _erofs_printk(struct super_block *sb, const char *func, const char *fmt, ...)
 {
 	struct va_format vaf;
 	va_list args;
+	int level;
 
 	va_start(args, fmt);
 
-	vaf.fmt = fmt;
+	level = printk_get_level(fmt);
+	vaf.fmt = printk_skip_level(fmt);
 	vaf.va = &args;
 
 	if (sb)
-		pr_err("(device %s): %s: %pV", sb->s_id, func, &vaf);
+		printk("%c%c(device %s): %s: %pV",
+				KERN_SOH_ASCII, level, sb->s_id, func, &vaf);
 	else
-		pr_err("%s: %pV", func, &vaf);
-	va_end(args);
-}
-
-void _erofs_info(struct super_block *sb, const char *func, const char *fmt, ...)
-{
-	struct va_format vaf;
-	va_list args;
-
-	va_start(args, fmt);
-
-	vaf.fmt = fmt;
-	vaf.va = &args;
-
-	if (sb)
-		pr_info("(device %s): %pV", sb->s_id, &vaf);
-	else
-		pr_info("%pV", &vaf);
+		printk("%c%c%s: %pV", KERN_SOH_ASCII, level, func, &vaf);
 	va_end(args);
 }
 
-- 
2.43.0

Re: [PATCH] erofs: simplify definition of the log functions

Posted by Gao Xiang 1 week, 6 days ago

Hi Hao,

Sorry for late response due to my long vacation.

On 2024/10/18 11:35, Gou Hao wrote:
> using printk instead of pr_info/err, reduce
> redundant code.

Use printk instead of pr_info/err to reduce
redundant code.

> 
> Signed-off-by: Gou Hao <gouhao@uniontech.com>
> ---
>   fs/erofs/internal.h |  9 ++++-----
>   fs/erofs/super.c    | 28 +++++++---------------------
>   2 files changed, 11 insertions(+), 26 deletions(-)
> 
> diff --git a/fs/erofs/internal.h b/fs/erofs/internal.h
> index 4efd578d7c62..ae87e855e815 100644
> --- a/fs/erofs/internal.h
> +++ b/fs/erofs/internal.h
> @@ -24,14 +24,13 @@
>   #undef pr_fmt
>   #define pr_fmt(fmt) "erofs: " fmt
>   
> -__printf(3, 4) void _erofs_err(struct super_block *sb,
> +__printf(3, 4) void _erofs_printk(struct super_block *sb,
>   			       const char *function, const char *fmt, ...);
>   #define erofs_err(sb, fmt, ...)	\
> -	_erofs_err(sb, __func__, fmt "\n", ##__VA_ARGS__)
> -__printf(3, 4) void _erofs_info(struct super_block *sb,
> -			       const char *function, const char *fmt, ...);
> +	_erofs_printk(sb, __func__, KERN_ERR fmt "\n", ##__VA_ARGS__)
>   #define erofs_info(sb, fmt, ...) \
> -	_erofs_info(sb, __func__, fmt "\n", ##__VA_ARGS__)
> +	_erofs_printk(sb, __func__, KERN_INFO fmt "\n", ##__VA_ARGS__)
> +
>   #ifdef CONFIG_EROFS_FS_DEBUG
>   #define DBG_BUGON               BUG_ON
>   #else
> diff --git a/fs/erofs/super.c b/fs/erofs/super.c
> index 666873f745da..64c3258ddf9a 100644
> --- a/fs/erofs/super.c
> +++ b/fs/erofs/super.c
> @@ -18,37 +18,23 @@
>   
>   static struct kmem_cache *erofs_inode_cachep __read_mostly;
>   
> -void _erofs_err(struct super_block *sb, const char *func, const char *fmt, ...)
> +void _erofs_printk(struct super_block *sb, const char *func, const char *fmt, ...)
>   {
>   	struct va_format vaf;
>   	va_list args;
> +	int level;
>   
>   	va_start(args, fmt);
>   
> -	vaf.fmt = fmt;
> +	level = printk_get_level(fmt);
> +	vaf.fmt = printk_skip_level(fmt);
>   	vaf.va = &args;

Let's get rid of `const char *func,` for all cases
since I think it's not very helpful indeed.

Thanks,
Gao Xiang