datapath: Rename linux-2.6 and compat-2.6 directories.

[sliver-openvswitch.git] / datapath / linux / compat / include / linux / jiffies.h

diff --git a/datapath/linux/compat/include/linux/jiffies.h b/datapath/linux/compat/include/linux/jiffies.h
new file mode 100644 (file)
index 0000000..3286e63
--- /dev/null
+++ b/datapath/linux/compat/include/linux/jiffies.h
@@ -0,0 +1,26 @@
+#ifndef __LINUX_JIFFIES_WRAPPER_H
+#define __LINUX_JIFFIES_WRAPPER_H 1
+
+#include_next <linux/jiffies.h>
+
+#include <linux/version.h>
+#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,19)
+
+/* Same as above, but does so with platform independent 64bit types.
+ * These must be used when utilizing jiffies_64 (i.e. return value of
+ * get_jiffies_64() */
+#define time_after64(a,b)       \
+        (typecheck(__u64, a) && \
+         typecheck(__u64, b) && \
+         ((__s64)(b) - (__s64)(a) < 0))
+#define time_before64(a,b)      time_after64(b,a)
+
+#define time_after_eq64(a,b)    \
+        (typecheck(__u64, a) && \
+         typecheck(__u64, b) && \
+         ((__s64)(a) - (__s64)(b) >= 0))
+#define time_before_eq64(a,b)   time_after_eq64(b,a)
+
+#endif /* linux kernel < 2.6.19 */
+
+#endif