[GIT PULL] Scheduler changes for v6.10

[Ingo Molnar <mingo@kernel.org>]

Linus,

Please pull the latest sched/core Git tree from:

   git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git sched-core-2024-05-13

   # HEAD: 97450eb909658573dcacc1063b06d3d08642c0c1 sched/pelt: Remove shift of thermal clock

Scheduler changes for v6.10:

 - Add cpufreq pressure feedback for the scheduler

 - Rework misfit load-balancing wrt. affinity restrictions

 - Clean up and simplify the code around ::overutilized and
   ::overload access.

 - Simplify sched_balance_newidle()

 - Bump SCHEDSTAT_VERSION to 16 due to a cleanup of CPU_MAX_IDLE_TYPES
   handling that changed the output.

 - Rework & clean up <asm/vtime.h> interactions wrt. arch_vtime_task_switch()

 - Reorganize, clean up and unify most of the higher level
   scheduler balancing function names around the sched_balance_*()
   prefix.

 - Simplify the balancing flag code (sched_balance_running)

 - Miscellaneous cleanups & fixes

 Thanks,

	Ingo

------------------>
Alexander Gordeev (5):
      sched/vtime: Remove confusing arch_vtime_task_switch() declaration
      sched/vtime: Get rid of generic vtime_task_switch() implementation
      s390/vtime: Remove unused __ARCH_HAS_VTIME_TASK_SWITCH leftover
      s390/irq,nmi: Include <asm/vtime.h> header directly
      sched/vtime: Do not include <asm/vtime.h> header

Ingo Molnar (28):
      sched/balancing: Switch the 'DEFINE_SPINLOCK(balancing)' spinlock into an 'atomic_t sched_balance_running' flag
      sched/balancing: Change 'enum cpu_idle_type' to have more natural definitions
      sched/debug: Increase SCHEDSTAT_VERSION to 16
      sched/debug: Allow CONFIG_SCHEDSTATS even on !KERNEL_DEBUG kernels
      sched/balancing: Change comment formatting to not overlap Git conflict marker lines
      sched/balancing: Fix comments (trying to) refer to NOHZ_BALANCE_KICK
      sched/balancing: Update run_rebalance_domains() comments
      sched/balancing: Vertically align the comments of 'struct sg_lb_stats' and 'struct sd_lb_stats'
      sched/balancing: Update comments in 'struct sg_lb_stats' and 'struct sd_lb_stats'
      sched/balancing: Rename run_rebalance_domains() => sched_balance_softirq()
      sched/balancing: Rename scheduler_tick() => sched_tick()
      sched/balancing: Rename trigger_load_balance() => sched_balance_trigger()
      sched/balancing: Rename rebalance_domains() => sched_balance_domains()
      sched/balancing: Rename load_balance() => sched_balance_rq()
      sched/balancing: Rename find_busiest_queue() => sched_balance_find_src_rq()
      sched/balancing: Rename find_busiest_group() => sched_balance_find_src_group()
      sched/balancing: Rename update_blocked_averages() => sched_balance_update_blocked_averages()
      sched/balancing: Rename newidle_balance() => sched_balance_newidle()
      sched/balancing: Rename find_idlest_group_cpu() => sched_balance_find_dst_group_cpu()
      sched/balancing: Rename find_idlest_group() => sched_balance_find_dst_group()
      sched/balancing: Rename find_idlest_cpu() => sched_balance_find_dst_cpu()
      sched/balancing: Fix a couple of outdated function names in comments
      sched/fair: Fix typos in comments
      sched/fair: Rename root_domain::overload to ::overloaded
      sched/fair: Rename {set|get}_rd_overload() to {set|get}_rd_overloaded()
      sched/fair: Rename SG_OVERLOAD to SG_OVERLOADED
      sched/fair: Rename set_rd_overutilized_status() to set_rd_overutilized()
      sched/balancing: Simplify the sg_status bitmask and use separate ->overloaded and ->overutilized flags

Qais Yousef (4):
      sched/topology: Export asym_cap_list
      sched/fair: Check if a task has a fitting CPU when updating misfit
      sched/topology: Remove root_domain::max_cpu_capacity
      sched/fair: Don't double balance_interval for migrate_misfit

Shrikanth Hegde (7):
      sched/balancing: Remove reliance on 'enum cpu_idle_type' ordering when iterating [CPU_MAX_IDLE_TYPES] arrays in show_schedstat()
      sched/fair: Add EAS checks before updating root_domain::overutilized
      sched/fair: Introduce is_rd_overutilized() helper function to access root_domain::overutilized
      sched/fair: Simplify the continue_balancing logic in sched_balance_newidle()
      sched/fair: Combine EAS check with root_domain::overutilized access
      sched/fair: Check root_domain::overload value before update
      sched/fair: Use helper functions to access root_domain::overload

Vincent Guittot (6):
      sched/fair: Fix update of rd->sg_overutilized
      cpufreq: Add a cpufreq pressure feedback for the scheduler
      sched/cpufreq: Take cpufreq feedback into account
      thermal/cpufreq: Remove arch_update_thermal_pressure()
      sched/cpufreq: Rename arch_update_thermal_pressure() => arch_update_hw_pressure()
      sched/pelt: Remove shift of thermal clock


 Documentation/admin-guide/kernel-parameters.txt    |   1 +
 Documentation/scheduler/sched-domains.rst          |  12 +-
 Documentation/scheduler/sched-stats.rst            |  37 +-
 .../translations/zh_CN/scheduler/sched-domains.rst |  10 +-
 .../translations/zh_CN/scheduler/sched-stats.rst   |  30 +-
 arch/arm/include/asm/topology.h                    |   6 +-
 arch/arm/kernel/topology.c                         |   2 +-
 arch/arm64/include/asm/topology.h                  |   6 +-
 arch/powerpc/include/asm/Kbuild                    |   1 -
 arch/powerpc/include/asm/cputime.h                 |  13 -
 arch/powerpc/kernel/time.c                         |  22 +
 arch/s390/include/asm/vtime.h                      |   2 -
 arch/s390/kernel/irq.c                             |   1 +
 arch/s390/kernel/nmi.c                             |   1 +
 drivers/base/arch_topology.c                       |  26 +-
 drivers/cpufreq/cpufreq.c                          |  36 ++
 drivers/cpufreq/qcom-cpufreq-hw.c                  |   4 +-
 drivers/thermal/cpufreq_cooling.c                  |   3 -
 include/asm-generic/vtime.h                        |   1 -
 include/linux/arch_topology.h                      |   8 +-
 include/linux/cpufreq.h                            |  10 +
 include/linux/sched.h                              |   3 +-
 include/linux/sched/idle.h                         |   2 +-
 include/linux/sched/topology.h                     |  10 +-
 include/linux/vtime.h                              |   5 -
 .../events/{thermal_pressure.h => hw_pressure.h}   |  14 +-
 include/trace/events/sched.h                       |   2 +-
 init/Kconfig                                       |  12 +-
 init/init_task.c                                   |   1 +
 kernel/sched/core.c                                |  14 +-
 kernel/sched/cputime.c                             |  13 -
 kernel/sched/fair.c                                | 501 ++++++++++++---------
 kernel/sched/loadavg.c                             |   2 +-
 kernel/sched/pelt.c                                |  22 +-
 kernel/sched/pelt.h                                |  16 +-
 kernel/sched/sched.h                               |  71 ++-
 kernel/sched/stats.c                               |   5 +-
 kernel/sched/topology.c                            |  56 ++-
 kernel/time/timer.c                                |   2 +-
 kernel/workqueue.c                                 |   2 +-
 lib/Kconfig.debug                                  |   2 +-
 .../ftrace/test.d/ftrace/func_set_ftrace_file.tc   |   2 +-
 42 files changed, 549 insertions(+), 440 deletions(-)
 delete mode 100644 include/asm-generic/vtime.h
 rename include/trace/events/{thermal_pressure.h => hw_pressure.h} (55%)