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

[sliver-openvswitch.git] / datapath / linux-2.6 / compat-2.6 / include / linux / timer.h

diff --git a/datapath/linux-2.6/compat-2.6/include/linux/timer.h b/datapath/linux-2.6/compat-2.6/include/linux/timer.h
deleted file mode 100644 (file)
index 6c3a9b0..0000000
--- a/datapath/linux-2.6/compat-2.6/include/linux/timer.h
+++ /dev/null
@@ -1,96 +0,0 @@
-#ifndef __LINUX_TIMER_WRAPPER_H
-#define __LINUX_TIMER_WRAPPER_H 1
-
-#include_next <linux/timer.h>
-
-#include <linux/version.h>
-
-#ifndef RHEL_RELEASE_VERSION
-#define RHEL_RELEASE_VERSION(X,Y) ( 0 )
-#endif
-#if ((LINUX_VERSION_CODE < KERNEL_VERSION(2,6,20)) && \
-     (!defined(RHEL_RELEASE_CODE) || \
-      (RHEL_RELEASE_CODE < RHEL_RELEASE_VERSION(5,1))))
-
-extern unsigned long volatile jiffies;
-
-/**
- * __round_jiffies - function to round jiffies to a full second
- * @j: the time in (absolute) jiffies that should be rounded
- * @cpu: the processor number on which the timeout will happen
- *
- * __round_jiffies() rounds an absolute time in the future (in jiffies)
- * up or down to (approximately) full seconds. This is useful for timers
- * for which the exact time they fire does not matter too much, as long as
- * they fire approximately every X seconds.
- *
- * By rounding these timers to whole seconds, all such timers will fire
- * at the same time, rather than at various times spread out. The goal
- * of this is to have the CPU wake up less, which saves power.
- *
- * The exact rounding is skewed for each processor to avoid all
- * processors firing at the exact same time, which could lead
- * to lock contention or spurious cache line bouncing.
- *
- * The return value is the rounded version of the @j parameter.
- */
-static inline unsigned long __round_jiffies(unsigned long j, int cpu)
-{
-       int rem;
-       unsigned long original = j;
-
-       /*
-        * We don't want all cpus firing their timers at once hitting the
-        * same lock or cachelines, so we skew each extra cpu with an extra
-        * 3 jiffies. This 3 jiffies came originally from the mm/ code which
-        * already did this.
-        * The skew is done by adding 3*cpunr, then round, then subtract this
-        * extra offset again.
-        */
-       j += cpu * 3;
-
-       rem = j % HZ;
-
-       /*
-        * If the target jiffie is just after a whole second (which can happen
-        * due to delays of the timer irq, long irq off times etc etc) then
-        * we should round down to the whole second, not up. Use 1/4th second
-        * as cutoff for this rounding as an extreme upper bound for this.
-        */
-       if (rem < HZ/4) /* round down */
-               j = j - rem;
-       else /* round up */
-               j = j - rem + HZ;
-
-       /* now that we have rounded, subtract the extra skew again */
-       j -= cpu * 3;
-
-       if (j <= jiffies) /* rounding ate our timeout entirely; */
-               return original;
-       return j;
-}
-
-
-/**
- * round_jiffies - function to round jiffies to a full second
- * @j: the time in (absolute) jiffies that should be rounded
- *
- * round_jiffies() rounds an absolute time in the future (in jiffies)
- * up or down to (approximately) full seconds. This is useful for timers
- * for which the exact time they fire does not matter too much, as long as
- * they fire approximately every X seconds.
- *
- * By rounding these timers to whole seconds, all such timers will fire
- * at the same time, rather than at various times spread out. The goal
- * of this is to have the CPU wake up less, which saves power.
- *
- * The return value is the rounded version of the @j parameter.
- */
-static inline unsigned long round_jiffies(unsigned long j)
-{
-       return __round_jiffies(j, 0);  // FIXME
-}
-
-#endif /* linux kernel < 2.6.20 */
-
-#endif