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authorLi Zefan <lizefan@huawei.com>2013-03-05 09:06:09 +0100
committerIngo Molnar <mingo@kernel.org>2013-03-06 11:24:30 +0100
commitcc1f4b1f3faed9f2040eff2a75f510b424b3cf18 (patch)
treec894d67bfca2ff5aebf09cc1f3cc8b0f8f88ddd6
parentsched: Remove test_sd_parent() (diff)
downloadlinux-cc1f4b1f3faed9f2040eff2a75f510b424b3cf18.tar.xz
linux-cc1f4b1f3faed9f2040eff2a75f510b424b3cf18.zip
sched: Move SCHED_LOAD_SHIFT macros to kernel/sched/sched.h
They are used internally only. Signed-off-by: Li Zefan <lizefan@huawei.com> Cc: Peter Zijlstra <peterz@infradead.org> Link: http://lkml.kernel.org/r/5135A771.4070104@huawei.com Signed-off-by: Ingo Molnar <mingo@kernel.org>
-rw-r--r--include/linux/sched.h25
-rw-r--r--kernel/sched/sched.h26
2 files changed, 25 insertions, 26 deletions
diff --git a/include/linux/sched.h b/include/linux/sched.h
index e880d7d115ef..f8826d04fb12 100644
--- a/include/linux/sched.h
+++ b/include/linux/sched.h
@@ -756,31 +756,6 @@ enum cpu_idle_type {
};
/*
- * Increase resolution of nice-level calculations for 64-bit architectures.
- * The extra resolution improves shares distribution and load balancing of
- * low-weight task groups (eg. nice +19 on an autogroup), deeper taskgroup
- * hierarchies, especially on larger systems. This is not a user-visible change
- * and does not change the user-interface for setting shares/weights.
- *
- * We increase resolution only if we have enough bits to allow this increased
- * resolution (i.e. BITS_PER_LONG > 32). The costs for increasing resolution
- * when BITS_PER_LONG <= 32 are pretty high and the returns do not justify the
- * increased costs.
- */
-#if 0 /* BITS_PER_LONG > 32 -- currently broken: it increases power usage under light load */
-# define SCHED_LOAD_RESOLUTION 10
-# define scale_load(w) ((w) << SCHED_LOAD_RESOLUTION)
-# define scale_load_down(w) ((w) >> SCHED_LOAD_RESOLUTION)
-#else
-# define SCHED_LOAD_RESOLUTION 0
-# define scale_load(w) (w)
-# define scale_load_down(w) (w)
-#endif
-
-#define SCHED_LOAD_SHIFT (10 + SCHED_LOAD_RESOLUTION)
-#define SCHED_LOAD_SCALE (1L << SCHED_LOAD_SHIFT)
-
-/*
* Increase resolution of cpu_power calculations
*/
#define SCHED_POWER_SHIFT 10
diff --git a/kernel/sched/sched.h b/kernel/sched/sched.h
index cc03cfdf469f..709a30cdfd85 100644
--- a/kernel/sched/sched.h
+++ b/kernel/sched/sched.h
@@ -33,6 +33,31 @@ extern __read_mostly int scheduler_running;
*/
#define NS_TO_JIFFIES(TIME) ((unsigned long)(TIME) / (NSEC_PER_SEC / HZ))
+/*
+ * Increase resolution of nice-level calculations for 64-bit architectures.
+ * The extra resolution improves shares distribution and load balancing of
+ * low-weight task groups (eg. nice +19 on an autogroup), deeper taskgroup
+ * hierarchies, especially on larger systems. This is not a user-visible change
+ * and does not change the user-interface for setting shares/weights.
+ *
+ * We increase resolution only if we have enough bits to allow this increased
+ * resolution (i.e. BITS_PER_LONG > 32). The costs for increasing resolution
+ * when BITS_PER_LONG <= 32 are pretty high and the returns do not justify the
+ * increased costs.
+ */
+#if 0 /* BITS_PER_LONG > 32 -- currently broken: it increases power usage under light load */
+# define SCHED_LOAD_RESOLUTION 10
+# define scale_load(w) ((w) << SCHED_LOAD_RESOLUTION)
+# define scale_load_down(w) ((w) >> SCHED_LOAD_RESOLUTION)
+#else
+# define SCHED_LOAD_RESOLUTION 0
+# define scale_load(w) (w)
+# define scale_load_down(w) (w)
+#endif
+
+#define SCHED_LOAD_SHIFT (10 + SCHED_LOAD_RESOLUTION)
+#define SCHED_LOAD_SCALE (1L << SCHED_LOAD_SHIFT)
+
#define NICE_0_LOAD SCHED_LOAD_SCALE
#define NICE_0_SHIFT SCHED_LOAD_SHIFT
@@ -784,7 +809,6 @@ static inline void finish_lock_switch(struct rq *rq, struct task_struct *prev)
}
#endif /* __ARCH_WANT_UNLOCKED_CTXSW */
-
static inline void update_load_add(struct load_weight *lw, unsigned long inc)
{
lw->weight += inc;