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authorLi Zefan <lizefan@huawei.com>2013-03-05 12:06:09 +0400
committerIngo Molnar <mingo@kernel.org>2013-03-06 14:24:30 +0400
commitcc1f4b1f3faed9f2040eff2a75f510b424b3cf18 (patch)
treec894d67bfca2ff5aebf09cc1f3cc8b0f8f88ddd6 /include/linux/sched.h
parent090b582f27ac7b6714661020033160130e5297bd (diff)
downloadlinux-cc1f4b1f3faed9f2040eff2a75f510b424b3cf18.tar.xz
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>
Diffstat (limited to 'include/linux/sched.h')
-rw-r--r--include/linux/sched.h25
1 files changed, 0 insertions, 25 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