sched: Add core wide task selection and scheduling
authorPeter Zijlstra <peterz@infradead.org>
Tue, 17 Nov 2020 23:19:37 +0000 (18:19 -0500)
committerPeter Zijlstra <peterz@infradead.org>
Wed, 12 May 2021 09:43:28 +0000 (11:43 +0200)
commit539f65125d20aacab54d02d77f10a839f45b09dc
treefd42e9555e674cf8987bce6eee17a25371df2ef8
parent8a311c740b53324ec584e0e3bb7077d56b123c28
sched: Add core wide task selection and scheduling

Instead of only selecting a local task, select a task for all SMT
siblings for every reschedule on the core (irrespective which logical
CPU does the reschedule).

Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Tested-by: Don Hiatt <dhiatt@digitalocean.com>
Tested-by: Hongyu Ning <hongyu.ning@linux.intel.com>
Tested-by: Vincent Guittot <vincent.guittot@linaro.org>
Link: https://lkml.kernel.org/r/20210422123308.557559654@infradead.org
kernel/sched/core.c
kernel/sched/sched.h