linux/drivers/cpuidle
Linus Torvalds 66ec24c5d7 s390 updates for 7.3 merge window
- Add a cpuidle driver with polling and enabled wait states using the
   existing CPU idle infrastructure and idle governor to improve latency
   for frequent sleep/wakeup cycles. Remove the obsolete tick delay
   heuristic and generic arch_needs_cpu() hook. Add the corresponding
   driver entry to MAINTAINERS
 
 - Add kCFI support using the generic support provided by Clang
 
 - Enable Clang CONTEXT_ANALYSIS for various architecture code and for
   char, PCI, CIO and virtio drivers. Add required lock annotations,
   exclude unsupported mm helpers and remove conditional PCI locking
 
 - Fix secure storage access exception handling and reintroduce
   DCACHE_WORD_ACCESS previously removed as a workaround
 
 - Fix cpum_cf perf crashes when CPUs are brought online while per-task
   events are active. Allocate and remove per-CPU counter data from CPU
   hotplug callbacks
 
 - Fix a deadlock when an s390dbf debug area is unregistered while one
   of its debugfs files is being written to
 
 - Fix MVIY_PERCPU() with binutils older than 2.39, where an assembler
   macro silently omitted an instruction needed to repair interrupted
   operations after CPU migration
 
 - Remove/replace cond_resched() calls which are no-ops with the supported
   s390 preemption models
 
 - Fix AP queue depth and maximum message length decoding according to
   the architecture. Current hardware is not affected, but future hardware
   could report values which were handled incorrectly
 
 - Reflect the configured CPU state in cpu_enabled_mask so deconfigured
   CPUs are not presented as available for onlining
 
 - Restore the vDSO GNU_EH_FRAME program header which was lost when the
   build switched to direct linker invocation, and mark it read-only
 
 - Add SCLP action qualifiers used by Spyre for card initialization,
   recoverable error and telemetry reporting
 
 - Move KMSAN interrupt flag helpers out of line to fix
   -Wstatic-in-inline build warnings
 
 - Use level-specific page table entry accessors for hugetlb entries and
   ptep_get() when accessing crashed kernel memory in kdump
 
 - Make forced AP bus rescans killable so that a user process blocked
   behind an ongoing scan can still be terminated with SIGKILL
 
 - Rework pkey ioctl error paths to remove duplicated cleanup code and
   avoid freeing error pointers
 
 - Allow the protected guest SWIOTLB buffer to be allocated outside the
   first 2GB. Also enable dynamic SWIOTLB growth and the coherent atomic
   pool fallback to improve I/O behavior when the initial pool is exhausted
 
 - Add program check statistics and spinlock contention tracepoints.
   Increase the lockdep chain capacity to keep lockdep enabled for complex
   code paths such as btrfs
 
 - Simplify IPL, trap and syscall code and remove the obsolete unistd_32.h
   generation entry
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Merge tag 's390-7.3-1' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux

Pull s390 updates from Vasily Gorbik:

 - Add a cpuidle driver with polling and enabled wait states using the
   existing CPU idle infrastructure and idle governor to improve latency
   for frequent sleep/wakeup cycles. Remove the obsolete tick delay
   heuristic and generic arch_needs_cpu() hook. Add the corresponding
   driver entry to MAINTAINERS

 - Add kCFI support using the generic support provided by Clang

 - Enable Clang CONTEXT_ANALYSIS for various architecture code and for
   char, PCI, CIO and virtio drivers. Add required lock annotations,
   exclude unsupported mm helpers and remove conditional PCI locking

 - Fix secure storage access exception handling and reintroduce
   DCACHE_WORD_ACCESS previously removed as a workaround

 - Fix cpum_cf perf crashes when CPUs are brought online while per-task
   events are active. Allocate and remove per-CPU counter data from CPU
   hotplug callbacks

 - Fix a deadlock when an s390dbf debug area is unregistered while one
   of its debugfs files is being written to

 - Fix MVIY_PERCPU() with binutils older than 2.39, where an assembler
   macro silently omitted an instruction needed to repair interrupted
   operations after CPU migration

 - Remove/replace cond_resched() calls which are no-ops with the
   supported s390 preemption models

 - Fix AP queue depth and maximum message length decoding according to
   the architecture. Current hardware is not affected, but future
   hardware could report values which were handled incorrectly

 - Reflect the configured CPU state in cpu_enabled_mask so deconfigured
   CPUs are not presented as available for onlining

 - Restore the vDSO GNU_EH_FRAME program header which was lost when the
   build switched to direct linker invocation, and mark it read-only

 - Add SCLP action qualifiers used by Spyre for card initialization,
   recoverable error and telemetry reporting

 - Move KMSAN interrupt flag helpers out of line to fix
   -Wstatic-in-inline build warnings

 - Use level-specific page table entry accessors for hugetlb entries and
   ptep_get() when accessing crashed kernel memory in kdump

 - Make forced AP bus rescans killable so that a user process blocked
   behind an ongoing scan can still be terminated with SIGKILL

 - Rework pkey ioctl error paths to remove duplicated cleanup code and
   avoid freeing error pointers

 - Allow the protected guest SWIOTLB buffer to be allocated outside the
   first 2GB. Also enable dynamic SWIOTLB growth and the coherent atomic
   pool fallback to improve I/O behavior when the initial pool is
   exhausted

 - Add program check statistics and spinlock contention tracepoints.
   Increase the lockdep chain capacity to keep lockdep enabled for
   complex code paths such as btrfs

 - Simplify IPL, trap and syscall code and remove the obsolete
   unistd_32.h generation entry

* tag 's390-7.3-1' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux: (59 commits)
  s390/percpu: Fix MVIY_PERCPU() with older binutils
  s390/debug: Fix deadlock during unregister
  s390/cpum_cf: Handle CPU hotplug via prepare/dead callbacks
  s390: Enable CONTEXT_ANALYSIS for various directories
  s390/mm: Add __context_unsafe() attribute to gmap helper functions
  s390/mm: Add __context_unsafe() attribute to do_secure_storage_access()
  s390/sysinfo: Add context analysis attributes
  s390/irqflags: Add out-of-line definitions of arch_local_irq_*() for KMSAN
  s390/virtio: Enable CONTEXT_ANALYSIS
  s390/cio: Enable CONTEXT_ANALYSIS
  s390/vfio_ccw: Add __must_hold() attribute to vfio_ccw_sch_quiesce()
  s390/pci: Enable CONTEXT_ANALYSIS
  s390/pci: Rework __zpci_event_availability() to remove conditional locking
  s390/pci: Rework __zpci_event_error() to remove conditional locking
  s390/char: Enable CONTEXT_ANALYSIS
  s390/con3215: Add __must_hold() attribute to raw3215_make_room()
  s390/ap: Fix MAPML computation
  s390/cio: Remove cond_resched() calls
  s390: Remove cond_resched() calls
  KVM: s390: Remove cond_resched() calls
  ...
History 2026-08-23 10:26:44 -07:00
..
governors cpuidle: governors: teo: Rearrange stopped tick handling 2026-03-05 15:23:16 +01:00
coupled.c Convert 'alloc_obj' family to use the new default GFP_KERNEL argument 2026-02-21 17:09:51 -08:00
cpuidle-arm.c cpuidle: Init cpuidle only for present CPUs 2025-03-12 21:31:59 +01:00
cpuidle-at91.c treewide: Replace GPLv2 boilerplate/reference with SPDX - gpl-2.0_56.RULE (part 2) 2022-06-10 14:51:35 +02:00
cpuidle-big_little.c cpuidle: big_little: Simplify with of_machine_device_match() 2025-11-26 19:42:40 -06:00
cpuidle-calxeda.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 201 2019-05-30 11:29:52 -07:00
cpuidle-clps711x.c cpuidle: clps711x: convert to devm_platform_ioremap_resource() 2019-12-20 10:04:27 +01:00
cpuidle-cps.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
cpuidle-exynos.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500 2019-06-19 17:09:55 +02:00
cpuidle-haltpoll.c cpuidle: haltpoll: add missing MODULE_DESCRIPTION() macro 2024-06-14 18:15:38 +02:00
cpuidle-kirkwood.c Get rid of 'remove_new' relic from platform driver struct 2024-12-01 15:12:43 -08:00
cpuidle-mvebu-v7.c cpuidle: mvebu: Fix duplicate flags assignment 2023-01-18 12:03:54 +01:00
cpuidle-powernv.c cpuidle: powerpc: avoid double clear when breaking snooze 2026-04-01 09:21:06 +05:30
cpuidle-psci-domain.c Convert 'alloc_obj' family to use the new default GFP_KERNEL argument 2026-02-21 17:09:51 -08:00
cpuidle-psci.c soc: driver updates for 6.19 2025-12-05 17:29:04 -08:00
cpuidle-psci.h cpuidle: psci: Correct the domain-idlestate statistics in debugfs 2025-04-23 10:08:34 +02:00
cpuidle-pseries.c cpuidle: powerpc: avoid double clear when breaking snooze 2026-04-01 09:21:06 +05:30
cpuidle-qcom-spm.c cpuidle: qcom-spm: drop unnecessary initialisations 2025-09-10 12:49:52 +02:00
cpuidle-riscv-sbi.c Convert 'alloc_obj' family to use the new default GFP_KERNEL argument 2026-02-21 17:09:51 -08:00
cpuidle-s390.c s390/idle: Introduce cpuidle for s390 2026-07-08 17:03:28 +02:00
cpuidle-tegra.c cpuidle: tegra: Export tegra_cpuidle_pcie_irqs_in_use() 2025-12-26 10:57:17 -06:00
cpuidle-ux500.c mfd/cpuidle: ux500: Rename driver symbol 2021-08-16 13:42:34 +01:00
cpuidle-zynq.c cpuidle: zynq: Switch Michal Simek's email to new one 2026-01-12 10:21:30 +01:00
cpuidle.c Power management updates for 7.1-rc1 2026-04-13 19:47:52 -07:00
cpuidle.h cpuidle: move to use bus_get_dev_root() 2023-03-22 20:25:23 +01:00
driver.c cpuidle: Allow exit latency to exceed target residency 2026-06-23 14:00:29 +02:00
dt_idle_genpd.c Convert 'alloc_obj' family to use the new default GFP_KERNEL argument 2026-02-21 17:09:51 -08:00
dt_idle_genpd.h cpuidle: dt_idle_genpd: Add helper function to remove genpd topology 2023-08-08 16:06:20 +02:00
dt_idle_states.c cpuidle: dt: fix opencoded for_each_cpu() in idle_state_valid() 2025-07-10 14:53:28 +02:00
dt_idle_states.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
governor.c cpuidle: Respect the CPU system wakeup QoS limit for cpuidle 2025-11-25 19:01:29 +01:00
Kconfig s390/idle: Introduce cpuidle for s390 2026-07-08 17:03:28 +02:00
Kconfig.arm soc: qcom: Avoid SCM and SPM for cpuidle drivers 2026-07-11 10:01:51 -05:00
Kconfig.mips cpuidle: clean up dead dependencies on CPU_IDLE in Kconfig 2026-04-01 16:01:27 +02:00
Kconfig.powerpc cpuidle: clean up dead dependencies on CPU_IDLE in Kconfig 2026-04-01 16:01:27 +02:00
Kconfig.riscv cpuidle: Add RISC-V SBI CPU idle driver 2022-03-10 09:29:51 -08:00
Kconfig.s390 s390/idle: Introduce cpuidle for s390 2026-07-08 17:03:28 +02:00
Makefile s390/idle: Introduce cpuidle for s390 2026-07-08 17:03:28 +02:00
poll_state.c cpuidle: Update header inclusion 2025-11-25 19:04:29 +01:00
sysfs.c Convert 'alloc_obj' family to use the new default GFP_KERNEL argument 2026-02-21 17:09:51 -08:00