Re: [PATCH 2/6] sched: add a new SD SHARE_POWERLINE flag for sched_domain

2012-12-13 Thread Vincent Guittot
On 13 December 2012 03:24, Alex Shi wrote: > On 12/12/2012 09:31 PM, Vincent Guittot wrote: >> This new flag SD_SHARE_POWERDOMAIN is used to reflect whether groups of CPU >> in >> a sched_domain level can or not reach a different power state. If clusters >> can >> be power gated independently, a

Re: [PATCH 2/6] sched: add a new SD SHARE_POWERLINE flag for sched_domain

2012-12-12 Thread Alex Shi
On 12/12/2012 09:31 PM, Vincent Guittot wrote: > This new flag SD_SHARE_POWERDOMAIN is used to reflect whether groups of CPU in > a sched_domain level can or not reach a different power state. If clusters can > be power gated independently, as an example, the flag should be cleared at CPU > level.

[PATCH 2/6] sched: add a new SD SHARE_POWERLINE flag for sched_domain

2012-12-12 Thread Vincent Guittot
This new flag SD_SHARE_POWERDOMAIN is used to reflect whether groups of CPU in a sched_domain level can or not reach a different power state. If clusters can be power gated independently, as an example, the flag should be cleared at CPU level. This information is used to decide if it's worth packin