This patch tries to fix a possible race window that lets multiple tasks wakeup on the same cpu. schbench, uperf & Jackbench (Android) mostly showed improvements while none of the other standard benchmarks have shown any regression.
changes from v1->v2: 1. Added the performance numbers. 2. Did not include the debug patch. It can still be found at https://lkml.org/lkml/2017/10/31/16 Atish Patra (1): sched: Minimize the idle cpu selection race window. kernel/sched/core.c | 4 ++++ kernel/sched/fair.c | 12 +++++++++--- kernel/sched/idle_task.c | 1 + kernel/sched/sched.h | 1 + 4 files changed, 15 insertions(+), 3 deletions(-) -- 2.7.4
