Messages in this thread Patch in this message | | | From | Chen Yu <> | Subject | [RFC PATCH 1/7] sched/topology: Assign sd_share for all non NUMA sched domains | Date | Thu, 27 Jul 2023 22:34:22 +0800 |
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Currently, only the domain with SD_SHARE_PKG_RESOURCES flag would share 1 sd_share for every CPU in this domain. Remove this restriction and extend it for other sched domains under NUMA domain.
This shared field will be used by a later patch which optimizes newidle balancing.
Suggested-by: "Gautham R. Shenoy" <gautham.shenoy@amd.com> Suggested-by: Peter Zijlstra (Intel) <peterz@infradead.org> Signed-off-by: Chen Yu <yu.c.chen@intel.com> --- kernel/sched/topology.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/kernel/sched/topology.c b/kernel/sched/topology.c index d3a3b2646ec4..64212f514765 100644 --- a/kernel/sched/topology.c +++ b/kernel/sched/topology.c @@ -1641,10 +1641,10 @@ sd_init(struct sched_domain_topology_level *tl, } /* - * For all levels sharing cache; connect a sched_domain_shared + * For all levels except for NUMA; connect a sched_domain_shared * instance. */ - if (sd->flags & SD_SHARE_PKG_RESOURCES) { + if (!(sd->flags & SD_NUMA)) { sd->shared = *per_cpu_ptr(sdd->sds, sd_id); atomic_inc(&sd->shared->ref); atomic_set(&sd->shared->nr_busy_cpus, sd_weight); -- 2.25.1
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