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Message-Id: <e18f5d8b8a0857a07918107f464a653234a47564.1267771398.git.joe@perches.com>
Date: Thu, 4 Mar 2010 22:56:53 -0800
From: Joe Perches <joe@...ches.com>
To: Andrew Morton <akpm@...ux-foundation.org>
Cc: Linus Torvalds <torvalds@...ux-foundation.org>,
Greg Kroah-Hartman <gregkh@...e.de>,
linux-kernel@...r.kernel.org, netdev@...r.kernel.org
Subject: [PATCH 2/3] device.h drivers/base/core.c Convert dev_<level> macros to functions
Save ~60k in a defconfig
Use %pV and struct va_format
Format arguments are verified before printk
There are existing "struct dev_info" declarations as well as local variables
named dev_info so the dev_info macro to function conversion is instead
called _dev_info and a macro is used to call _dev_info
Perhaps over time the struct and local uses of dev_info should be renamed.
Signed-off-by: Joe Perches <joe@...ches.com>
---
drivers/base/core.c | 56 +++++++++++++++++++++++++
include/linux/device.h | 105 ++++++++++++++++++++++++++++++++++++------------
2 files changed, 135 insertions(+), 26 deletions(-)
diff --git a/drivers/base/core.c b/drivers/base/core.c
index 2820257..19de3ab 100644
--- a/drivers/base/core.c
+++ b/drivers/base/core.c
@@ -1745,3 +1745,59 @@ void device_shutdown(void)
}
async_synchronize_full();
}
+
+/*
+ * Device logging functions
+ */
+
+#ifdef CONFIG_PRINTK
+
+static int __dev_printk(const char *level, const struct device *dev,
+ const char *fmt, va_list args)
+{
+ struct va_format vaf;
+
+ vaf.fmt = fmt;
+ vaf.va = &args;
+ return printk("%s%s %s: %pV",
+ level, dev_driver_string(dev), dev_name(dev), &vaf);
+}
+
+int dev_printk(const char *level, const struct device *dev,
+ const char *fmt, ...)
+{
+ int r;
+ va_list args;
+
+ va_start(args, fmt);
+ r = __dev_printk(level, dev, fmt, args);
+ va_end(args);
+
+ return r;
+}
+EXPORT_SYMBOL(dev_printk);
+
+#define declare_dev_level(function, level) \
+int function(const struct device *dev, const char *fmt, ...) \
+{ \
+ int r; \
+ va_list args; \
+ \
+ va_start(args, fmt); \
+ r = __dev_printk(level, dev, fmt, args); \
+ va_end(args); \
+ \
+ return r; \
+} \
+EXPORT_SYMBOL(function)
+
+declare_dev_level(dev_emerg, KERN_EMERG);
+declare_dev_level(dev_alert, KERN_ALERT);
+declare_dev_level(dev_crit, KERN_CRIT);
+declare_dev_level(dev_err, KERN_ERR);
+declare_dev_level(dev_warn, KERN_WARNING);
+declare_dev_level(dev_notice, KERN_NOTICE);
+declare_dev_level(_dev_info, KERN_INFO);
+/* Not dev_info because it conflicts with with existing "struct dev_info" */
+
+#endif
diff --git a/include/linux/device.h b/include/linux/device.h
index b30527d..5948c07 100644
--- a/include/linux/device.h
+++ b/include/linux/device.h
@@ -590,43 +590,96 @@ extern void sysdev_shutdown(void);
/* debugging and troubleshooting/diagnostic helpers. */
extern const char *dev_driver_string(const struct device *dev);
-#define dev_printk(level, dev, format, arg...) \
- printk(level "%s %s: " format , dev_driver_string(dev) , \
- dev_name(dev) , ## arg)
-
-#define dev_emerg(dev, format, arg...) \
- dev_printk(KERN_EMERG , dev , format , ## arg)
-#define dev_alert(dev, format, arg...) \
- dev_printk(KERN_ALERT , dev , format , ## arg)
-#define dev_crit(dev, format, arg...) \
- dev_printk(KERN_CRIT , dev , format , ## arg)
-#define dev_err(dev, format, arg...) \
- dev_printk(KERN_ERR , dev , format , ## arg)
-#define dev_warn(dev, format, arg...) \
- dev_printk(KERN_WARNING , dev , format , ## arg)
-#define dev_notice(dev, format, arg...) \
- dev_printk(KERN_NOTICE , dev , format , ## arg)
-#define dev_info(dev, format, arg...) \
- dev_printk(KERN_INFO , dev , format , ## arg)
+
+#ifdef CONFIG_PRINTK
+
+extern int dev_printk(const char *level, const struct device *dev,
+ const char *fmt, ...)
+ __attribute__ ((format (printf, 3, 4)));
+extern int dev_emerg(const struct device *dev, const char *fmt, ...)
+ __attribute__ ((format (printf, 2, 3)));
+extern int dev_alert(const struct device *dev, const char *fmt, ...)
+ __attribute__ ((format (printf, 2, 3)));
+extern int dev_crit(const struct device *dev, const char *fmt, ...)
+ __attribute__ ((format (printf, 2, 3)));
+extern int dev_err(const struct device *dev, const char *fmt, ...)
+ __attribute__ ((format (printf, 2, 3)));
+extern int dev_warn(const struct device *dev, const char *fmt, ...)
+ __attribute__ ((format (printf, 2, 3)));
+extern int dev_notice(const struct device *dev, const char *fmt, ...)
+ __attribute__ ((format (printf, 2, 3)));
+extern int _dev_info(const struct device *dev, const char *fmt, ...)
+ __attribute__ ((format (printf, 2, 3)));
+
+#else
+
+static inline int dev_printk(const char *level, const struct device *dev,
+ const char *fmt, ...)
+ __attribute__ ((format (printf, 3, 4)));
+static inline int dev_printk(const char *level, const struct device *dev,
+ const char *fmt, ...)
+ { return 0; }
+
+static inline int dev_emerg(const struct device *dev, const char *s, ...)
+ __attribute__ ((format (printf, 2, 3)));
+static inline int dev_emerg(const struct device *dev, const char *s, ...)
+ { return 0; }
+static inline int dev_crit(const struct device *dev, const char *s, ...)
+ __attribute__ ((format (printf, 2, 3)));
+static inline int dev_crit(const struct device *dev, const char *s, ...)
+ { return 0; }
+static inline int dev_alert(const struct device *dev, const char *s, ...)
+ __attribute__ ((format (printf, 2, 3)));
+static inline int dev_alert(const struct device *dev, const char *s, ...)
+ { return 0; }
+static inline int dev_err(const struct device *dev, const char *s, ...)
+ __attribute__ ((format (printf, 2, 3)));
+static inline int dev_err(const struct device *dev, const char *s, ...)
+ { return 0; }
+static inline int dev_warn(const struct device *dev, const char *s, ...)
+ __attribute__ ((format (printf, 2, 3)));
+static inline int dev_warn(const struct device *dev, const char *s, ...)
+ { return 0; }
+static inline int dev_notice(const struct device *dev, const char *s, ...)
+ __attribute__ ((format (printf, 2, 3)));
+static inline int dev_notice(const struct device *dev, const char *s, ...)
+ { return 0; }
+static inline int _dev_info(const struct device *dev, const char *s, ...)
+ __attribute__ ((format (printf, 2, 3)));
+static inline int _dev_info(const struct device *dev, const char *s, ...)
+ { return 0; }
+
+#endif
+
+#define dev_info(dev, fmt, arg...) _dev_info(dev, fmt, ##arg)
+/* workaround for existing struct dev_info and variable dev_info uses */
#if defined(DEBUG)
#define dev_dbg(dev, format, arg...) \
- dev_printk(KERN_DEBUG , dev , format , ## arg)
+ dev_printk(KERN_DEBUG, dev, format, ##arg)
#elif defined(CONFIG_DYNAMIC_DEBUG)
-#define dev_dbg(dev, format, ...) do { \
+#define dev_dbg(dev, format, ...) \
+do { \
dynamic_dev_dbg(dev, format, ##__VA_ARGS__); \
- } while (0)
+} while (0)
#else
-#define dev_dbg(dev, format, arg...) \
- ({ if (0) dev_printk(KERN_DEBUG, dev, format, ##arg); 0; })
+#define dev_dbg(dev, format, arg...) \
+({ \
+ if (0) \
+ dev_printk(KERN_DEBUG, dev, format, ##arg); \
+ 0; \
+})
#endif
#ifdef VERBOSE_DEBUG
#define dev_vdbg dev_dbg
#else
-
-#define dev_vdbg(dev, format, arg...) \
- ({ if (0) dev_printk(KERN_DEBUG, dev, format, ##arg); 0; })
+#define dev_vdbg(dev, format, arg...) \
+({ \
+ if (0) \
+ dev_printk(KERN_DEBUG, dev, format, ##arg); \
+ 0; \
+})
#endif
/*
--
1.7.0.14.g7e948
--
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