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SubjectRe: [PATCH 14/15] sched: Conditionally limit __cpu_power when child sched domain has type NODE
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On Thu, 2009-08-20 at 15:45 +0200, Andreas Herrmann wrote:
> We need this in case of performance policy. All sched_groups in
> child's parent domain (MN in this case) should be limited such that
> tasks are balanced among these sched_groups.

/me fails at correlating the above changelog and the below patch.

So here we go mess up cpu_power again in order to invluence the
placement policy?

> Signed-off-by: Andreas Herrmann <andreas.herrmann3@amd.com>
> ---
> kernel/sched.c | 4 ++--
> 1 files changed, 2 insertions(+), 2 deletions(-)
>
> diff --git a/kernel/sched.c b/kernel/sched.c
> index 0c950dc..ab88d88 100644
> --- a/kernel/sched.c
> +++ b/kernel/sched.c
> @@ -8555,11 +8555,11 @@ static void init_sched_groups_power(int cpu, struct sched_domain *sd)
> */
> if (!(sd->flags & SD_POWERSAVINGS_BALANCE) &&
> ((child->flags &
> - (SD_SHARE_CPUPOWER | SD_SHARE_PKG_RESOURCES)))) {
> + (SD_SHARE_CPUPOWER | SD_SHARE_PKG_RESOURCES)) ||
> + (child->level == SD_LV_NODE))) {
> sd->groups->__cpu_power = 0;
> sg_inc_cpu_power(sd->groups, SCHED_LOAD_SCALE);
> }
> -
> }
>
> /*


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