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authorIngo Molnar <mingo@elte.hu>2008-08-20 12:39:18 +0200
committerIngo Molnar <mingo@elte.hu>2008-08-20 12:39:18 +0200
commit170465ee7f5a9a2d0ac71285507e52642e040353 (patch)
treedbca81f04cde9e625170abbd6a72555cfbeb194e /include/linux/kernel.h
parent169ad16bb87c10a3f7c108bb7008ebc0270f617a (diff)
parent1fca25427482387689fa27594c992a961d98768f (diff)
downloadop-kernel-dev-170465ee7f5a9a2d0ac71285507e52642e040353.zip
op-kernel-dev-170465ee7f5a9a2d0ac71285507e52642e040353.tar.gz
Merge branch 'linus' into x86/xen
Diffstat (limited to 'include/linux/kernel.h')
-rw-r--r--include/linux/kernel.h20
1 files changed, 13 insertions, 7 deletions
diff --git a/include/linux/kernel.h b/include/linux/kernel.h
index 7889c2f..75d81f1 100644
--- a/include/linux/kernel.h
+++ b/include/linux/kernel.h
@@ -75,6 +75,12 @@ extern const char linux_proc_banner[];
*/
#define upper_32_bits(n) ((u32)(((n) >> 16) >> 16))
+/**
+ * lower_32_bits - return bits 0-31 of a number
+ * @n: the number we're accessing
+ */
+#define lower_32_bits(n) ((u32)(n))
+
#define KERN_EMERG "<0>" /* system is unusable */
#define KERN_ALERT "<1>" /* action must be taken immediately */
#define KERN_CRIT "<2>" /* critical conditions */
@@ -102,6 +108,13 @@ struct completion;
struct pt_regs;
struct user;
+#ifdef CONFIG_PREEMPT_VOLUNTARY
+extern int _cond_resched(void);
+# define might_resched() _cond_resched()
+#else
+# define might_resched() do { } while (0)
+#endif
+
/**
* might_sleep - annotation for functions that can sleep
*
@@ -112,13 +125,6 @@ struct user;
* be bitten later when the calling function happens to sleep when it is not
* supposed to.
*/
-#ifdef CONFIG_PREEMPT_VOLUNTARY
-extern int _cond_resched(void);
-# define might_resched() _cond_resched()
-#else
-# define might_resched() do { } while (0)
-#endif
-
#ifdef CONFIG_DEBUG_SPINLOCK_SLEEP
void __might_sleep(char *file, int line);
# define might_sleep() \
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