mtd: ubi: Add logging functions ubi_msg, ubi_warn and ubi_err

Using logging functions instead of macros can reduce overall object size.

$ size drivers/mtd/ubi/built-in.o*
   text	   data	    bss	    dec	    hex	filename
 271620	 163364	  73696	 508680	  7c308	drivers/mtd/ubi/built-in.o.allyesconfig.new
 287638	 165380	  73504	 526522	  808ba	drivers/mtd/ubi/built-in.o.allyesconfig.old
  87728	   3780	    504	  92012	  1676c	drivers/mtd/ubi/built-in.o.defconfig.new
  97084	   3780	    504	 101368	  18bf8	drivers/mtd/ubi/built-in.o.defconfig.old

Signed-off-by: Joe Perches <joe@perches.com>
Signed-off-by: Richard Weinberger <richard@nod.at>

diff --git a/drivers/mtd/ubi/misc.c b/drivers/mtd/ubi/misc.c
index 2a45ac2..989036c 100644 (file)
--- a/drivers/mtd/ubi/misc.c
+++ b/drivers/mtd/ubi/misc.c
@@ -153,3 +153,52 @@ int ubi_check_pattern(const void *buf, uint8_t patt, int size)
                        return 0;
        return 1;
 }
+
+/* Normal UBI messages */
+void ubi_msg(const struct ubi_device *ubi, const char *fmt, ...)
+{
+       struct va_format vaf;
+       va_list args;
+
+       va_start(args, fmt);
+
+       vaf.fmt = fmt;
+       vaf.va = &args;
+
+       pr_notice(UBI_NAME_STR "%d: %pV\n", ubi->ubi_num, &vaf);
+
+       va_end(args);
+}
+
+/* UBI warning messages */
+void ubi_warn(const struct ubi_device *ubi, const char *fmt, ...)
+{
+       struct va_format vaf;
+       va_list args;
+
+       va_start(args, fmt);
+
+       vaf.fmt = fmt;
+       vaf.va = &args;
+
+       pr_warn(UBI_NAME_STR "%d warning: %ps: %pV\n",
+               ubi->ubi_num, __builtin_return_address(0), &vaf);
+
+       va_end(args);
+}
+
+/* UBI error messages */
+void ubi_err(const struct ubi_device *ubi, const char *fmt, ...)
+{
+       struct va_format vaf;
+       va_list args;
+
+       va_start(args, fmt);
+
+       vaf.fmt = fmt;
+       vaf.va = &args;
+
+       pr_err(UBI_NAME_STR "%d error: %ps: %pV\n",
+              ubi->ubi_num, __builtin_return_address(0), &vaf);
+       va_end(args);
+}

diff --git a/drivers/mtd/ubi/ubi.h b/drivers/mtd/ubi/ubi.h
index 2974b67..dadc6a9 100644 (file)
--- a/drivers/mtd/ubi/ubi.h
+++ b/drivers/mtd/ubi/ubi.h
@@ -49,15 +49,19 @@
 /* UBI name used for character devices, sysfs, etc */
 #define UBI_NAME_STR "ubi"
 
+struct ubi_device;
+
 /* Normal UBI messages */
-#define ubi_msg(ubi, fmt, ...) pr_notice(UBI_NAME_STR "%d: " fmt "\n", \
-                                        ubi->ubi_num, ##__VA_ARGS__)
+__printf(2, 3)
+void ubi_msg(const struct ubi_device *ubi, const char *fmt, ...);
+
 /* UBI warning messages */
-#define ubi_warn(ubi, fmt, ...) pr_warn(UBI_NAME_STR "%d warning: %s: " fmt "\n", \
-                                       ubi->ubi_num, __func__, ##__VA_ARGS__)
+__printf(2, 3)
+void ubi_warn(const struct ubi_device *ubi, const char *fmt, ...);
+
 /* UBI error messages */
-#define ubi_err(ubi, fmt, ...) pr_err(UBI_NAME_STR "%d error: %s: " fmt "\n", \
-                                     ubi->ubi_num, __func__, ##__VA_ARGS__)
+__printf(2, 3)
+void ubi_err(const struct ubi_device *ubi, const char *fmt, ...);
 
 /* Background thread name pattern */
 #define UBI_BGT_NAME_PATTERN "ubi_bgt%dd"