linux-kernel - Re: [PATCH v5 1/5] sched/topology: Remove duplicate descriptions from TOPOLOGY_SD

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Date: Tue, 13 Feb 2024 17:45:37 +0100
From: Vincent Guittot <vincent.guittot@...aro.org>
To: alexs@...nel.org
Cc: Ingo Molnar <mingo@...hat.com>, Peter Zijlstra <peterz@...radead.org>, 
	Juri Lelli <juri.lelli@...hat.com>, Dietmar Eggemann <dietmar.eggemann@....com>, 
	Steven Rostedt <rostedt@...dmis.org>, Ben Segall <bsegall@...gle.com>, Mel Gorman <mgorman@...e.de>, 
	Daniel Bristot de Oliveira <bristot@...hat.com>, Valentin Schneider <vschneid@...hat.com>, 
	"open list:SCHEDULER" <linux-kernel@...r.kernel.org>, 
	Ricardo Neri <ricardo.neri-calderon@...ux.intel.com>
Subject: Re: [PATCH v5 1/5] sched/topology: Remove duplicate descriptions from TOPOLOGY_SD_FLAGS

On Sat, 10 Feb 2024 at 12:36, <alexs@...nel.org> wrote:
>
> From: Alex Shi <alexs@...nel.org>
>
> These flags are already documented in include/linux/sched/sd_flags.h.
> Also, add missing SD_CLUSTER and keep the comment on SD_ASYM_PACKING
> as it is a special case.
>
> Suggested-by: Ricardo Neri <ricardo.neri-calderon@...ux.intel.com>
> Signed-off-by: Alex Shi <alexs@...nel.org>
> Cc: Valentin Schneider <vschneid@...hat.com>
> Cc: Vincent Guittot <vincent.guittot@...aro.org>
> Cc: Juri Lelli <juri.lelli@...hat.com>
> Cc: Peter Zijlstra <peterz@...radead.org>
> Cc: Ingo Molnar <mingo@...hat.com>
> Reviewed-by: Ricardo Neri <ricardo.neri-calderon@...ux.intel.com>
> Reviewed-by: Valentin Schneider <vschneid@...hat.com>

Reviewed-by: Vincent Guittot <vincent.guittot@...aro.org>

> ---
>  kernel/sched/topology.c | 9 +++++----
>  1 file changed, 5 insertions(+), 4 deletions(-)
>
> diff --git a/kernel/sched/topology.c b/kernel/sched/topology.c
> index 10d1391e7416..0b33f7b05d21 100644
> --- a/kernel/sched/topology.c
> +++ b/kernel/sched/topology.c
> @@ -1551,11 +1551,12 @@ static struct cpumask           ***sched_domains_numa_masks;
>   *
>   * These flags are purely descriptive of the topology and do not prescribe
>   * behaviour. Behaviour is artificial and mapped in the below sd_init()
> - * function:
> + * function. For details, see include/linux/sched/sd_flags.h.
>   *
> - *   SD_SHARE_CPUCAPACITY   - describes SMT topologies
> - *   SD_SHARE_PKG_RESOURCES - describes shared caches
> - *   SD_NUMA                - describes NUMA topologies
> + *   SD_SHARE_CPUCAPACITY
> + *   SD_SHARE_PKG_RESOURCES
> + *   SD_CLUSTER
> + *   SD_NUMA
>   *
>   * Odd one out, which beside describing the topology has a quirk also
>   * prescribes the desired behaviour that goes along with it:
> --
> 2.43.0
>