• Linus Torvalds's avatar
    Merge tag 'sched-core-2020-06-02' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip · d479c5a1
    Linus Torvalds authored
    Pull scheduler updates from Ingo Molnar:
     "The changes in this cycle are:
    
       - Optimize the task wakeup CPU selection logic, to improve
         scalability and reduce wakeup latency spikes
    
       - PELT enhancements
    
       - CFS bandwidth handling fixes
    
       - Optimize the wakeup path by remove rq->wake_list and replacing it
         with ->ttwu_pending
    
       - Optimize IPI cross-calls by making flush_smp_call_function_queue()
         process sync callbacks first.
    
       - Misc fixes and enhancements"
    
    * tag 'sched-core-2020-06-02' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (36 commits)
      irq_work: Define irq_work_single() on !CONFIG_IRQ_WORK too
      sched/headers: Split out open-coded prototypes into kernel/sched/smp.h
      sched: Replace rq::wake_list
      sched: Add rq::ttwu_pending
      irq_work, smp: Allow irq_work on call_single_queue
      smp: Optimize send_call_function_single_ipi()
      smp: Move irq_work_run() out of flush_smp_call_function_queue()
      smp: Optimize flush_smp_call_function_queue()
      sched: Fix smp_call_function_single_async() usage for ILB
      sched/core: Offload wakee task activation if it the wakee is descheduling
      sched/core: Optimize ttwu() spinning on p->on_cpu
      sched: Defend cfs and rt bandwidth quota against overflow
      sched/cpuacct: Fix charge cpuacct.usage_sys
      sched/fair: Replace zero-length array with flexible-array
      sched/pelt: Sync util/runnable_sum with PELT window when propagating
      sched/cpuacct: Use __this_cpu_add() instead of this_cpu_ptr()
      sched/fair: Optimize enqueue_task_fair()
      sched: Make scheduler_ipi inline
      sched: Clean up scheduler_ipi()
      sched/core: Simplify sched_init()
      ...
    d479c5a1
core.c 201 KB