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Diffstat (limited to 'include/linux/kernel.h')
-rw-r--r--include/linux/kernel.h2
1 files changed, 2 insertions, 0 deletions
diff --git a/include/linux/kernel.h b/include/linux/kernel.h
index 5c1ec1f84eab..851aa1bcfc1a 100644
--- a/include/linux/kernel.h
+++ b/include/linux/kernel.h
@@ -33,6 +33,7 @@ extern const char linux_banner[];
#define ARRAY_SIZE(x) (sizeof(x) / sizeof((x)[0]))
#define ALIGN(x,a) (((x)+(a)-1)&~((a)-1))
#define FIELD_SIZEOF(t, f) (sizeof(((t*)0)->f))
+#define roundup(x, y) ((((x) + ((y) - 1)) / (y)) * (y))
#define KERN_EMERG "<0>" /* system is unusable */
#define KERN_ALERT "<1>" /* action must be taken immediately */
@@ -209,6 +210,7 @@ extern enum system_states {
extern void dump_stack(void);
#ifdef DEBUG
+/* If you are writing a driver, please use dev_dbg instead */
#define pr_debug(fmt,arg...) \
printk(KERN_DEBUG fmt,##arg)
#else