[PATCH v4 0/5] rework sched_domain topology description

[dietmar.eggemann@arm.com (Dietmar Eggemann)]

On 11/04/14 10:44, Vincent Guittot wrote:
> This patchset was previously part of the larger tasks packing patchset [1].
> I have splitted the latter in 3 different patchsets (at least) to make the
> thing easier.
> -configuration of sched_domain topology (this patchset)
> -update and consolidation of cpu_power
> -tasks packing algorithm
>
> Based on Peter Z's proposal [2][3], this patchset modifies the way to configure
> the sched_domain level in order to let architectures to add specific level like
> the current BOOK level or the proposed power gating level for ARM architecture.
>
> [1] https://lkml.org/lkml/2013/10/18/121
> [2] https://lkml.org/lkml/2013/11/5/239
> [3] https://lkml.org/lkml/2013/11/5/449

Hi Vincent,

given the discussion we had for v1-v3 and a short boot test of v4:

For patch 1/5, 4/5, 5/5 on ARM TC2 (heterogeneous dual socket w/o SMT 
machine):

Reviewed-by: Dietmar Eggemann <dietmar.eggemann@arm.com>
Tested-by: Dietmar Eggemann <dietmar.eggemann@arm.com>

Cheers,

-- Dietmar

>
> Change since v3:
> - remove last patch which was adding SD_SHARE_POWER_DOMAIN for powerpc's SMT
>    level
>
> Change since v2:
> - remove patch 1 as it has been already applied to metag tree for v3.15
> - updates some commit messages
> - add new flag description in TOPOLOGY_SD_FLAGS description
>
> Change since v1:
> - move sched_domains_curr_level back under #ifdef CONFIG_NUMA
> - use function pointer to set flag instead of a plain value.
> - add list of tunable flags in the commit message of patch 2
> - add SD_SHARE_POWER_DOMAIN flag for powerpc's SMT level
>
> Vincent Guittot (5):
>    sched: rework of sched_domain topology definition
>    sched: s390: create a dedicated topology table
>    sched: powerpc: create a dedicated topology table
>    sched: add a new SD_SHARE_POWERDOMAIN for sched_domain
>    sched: ARM: create a dedicated scheduler topology table
>
>   arch/arm/kernel/topology.c       |  26 +++++
>   arch/ia64/include/asm/topology.h |  24 ----
>   arch/powerpc/kernel/smp.c        |  31 +++--
>   arch/s390/include/asm/topology.h |  13 +--
>   arch/s390/kernel/topology.c      |  20 ++++
>   arch/tile/include/asm/topology.h |  33 ------
>   include/linux/sched.h            |  49 +++++++-
>   include/linux/topology.h         | 128 +++-----------------
>   kernel/sched/core.c              | 244 ++++++++++++++++++++-------------------
>   9 files changed, 255 insertions(+), 313 deletions(-)
>