From 1399fa7807a1a5998bbf147e80668e9950661dfa Mon Sep 17 00:00:00 2001 From: Nikhil Rao Date: Wed, 18 May 2011 10:09:39 -0700 Subject: sched: Introduce SCHED_POWER_SCALE to scale cpu_power calculations SCHED_LOAD_SCALE is used to increase nice resolution and to scale cpu_power calculations in the scheduler. This patch introduces SCHED_POWER_SCALE and converts all uses of SCHED_LOAD_SCALE for scaling cpu_power to use SCHED_POWER_SCALE instead. This is a preparatory patch for increasing the resolution of SCHED_LOAD_SCALE, and there is no need to increase resolution for cpu_power calculations. Signed-off-by: Nikhil Rao Acked-by: Peter Zijlstra Cc: Nikunj A. Dadhania Cc: Srivatsa Vaddagiri Cc: Stephan Barwolf Cc: Mike Galbraith Link: http://lkml.kernel.org/r/1305738580-9924-3-git-send-email-ncrao@google.com Signed-off-by: Ingo Molnar --- include/linux/sched.h | 13 ++++++++----- 1 file changed, 8 insertions(+), 5 deletions(-) (limited to 'include') diff --git a/include/linux/sched.h b/include/linux/sched.h index 12211e1666e2..f2f440221b70 100644 --- a/include/linux/sched.h +++ b/include/linux/sched.h @@ -787,18 +787,21 @@ enum cpu_idle_type { CPU_MAX_IDLE_TYPES }; -/* - * sched-domains (multiprocessor balancing) declarations: - */ - /* * 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 +/* + * Increase resolution of cpu_power calculations + */ +#define SCHED_POWER_SHIFT 10 +#define SCHED_POWER_SCALE (1L << SCHED_POWER_SHIFT) +/* + * sched-domains (multiprocessor balancing) declarations: + */ #ifdef CONFIG_SMP #define SD_LOAD_BALANCE 0x0001 /* Do load balancing on this domain. */ #define SD_BALANCE_NEWIDLE 0x0002 /* Balance when about to become idle */ -- cgit v1.2.3