From 9aa7b369819940cb1f3c74ba210516739a32ad95 Mon Sep 17 00:00:00 2001 From: Ingo Molnar Date: Mon, 9 Jul 2007 18:51:58 +0200 Subject: [PATCH] sched: increase the resolution of smpnice increase SMP-nice's resolution. This is needed by CFS to implement SCHED_IDLE and cleaned up nice level support. no behavioral changes. Signed-off-by: Ingo Molnar --- include/linux/sched.h | 9 ++++++++- 1 file changed, 8 insertions(+), 1 deletion(-) diff --git a/include/linux/sched.h b/include/linux/sched.h index 61a111fe2b7..d5084e7c48c 100644 --- a/include/linux/sched.h +++ b/include/linux/sched.h @@ -652,7 +652,14 @@ enum cpu_idle_type { /* * sched-domains (multiprocessor balancing) declarations: */ -#define SCHED_LOAD_SCALE 128UL /* increase resolution of load */ + +/* + * Increase resolution of nice-level calculations: + */ +#define SCHED_LOAD_SHIFT 10 +#define SCHED_LOAD_SCALE (1L << SCHED_LOAD_SHIFT) + +#define SCHED_LOAD_SCALE_FUZZ (SCHED_LOAD_SCALE >> 5) #ifdef CONFIG_SMP #define SD_LOAD_BALANCE 1 /* Do load balancing on this domain. */ -- 2.20.1