linux-next.git/kernel/time, branch master

Merge branch 'sysctl-next' of https://git.kernel.org/pub/scm/linux/kernel/git/sysctl/sysctl.git

2026-08-20T12:59:00+00:00

Merge branch 'non-rcu/next' of https://git.kernel.org/pub/scm/linux/kernel/git/paulmck/linux-rcu.git

2026-08-20T12:56:34+00:00

Merge branch 'for-next' of https://git.kernel.org/pub/scm/linux/kernel/git/s390/linux.git

2026-08-20T12:36:30+00:00

# Conflicts: # arch/s390/mm/init.c

Merge branch into tip/master: 'core/urgent'

2026-08-20T07:00:20+00:00

# New commits in core/urgent: c793bbfc4a0a ("timer: Keep debugobjects state consistent in migrate_timer_list()") Signed-off-by: Ingo Molnar

Merge tag 'timers-vdso-2026-08-17' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

2026-08-18T23:56:25+00:00

Pull VDSO updates from Thomas Gleixner: - Consolidate the VDSO datastore further and provide support for mlock_all() and prefaulting. - Provide 32-bit legacy time related functionality only if CONFIG_COMPAT_32BIT_TIME is enabled. The config switch exists, but architecture code still exposes the legacy functionality even disabled. Clean this up by adding the missing guards and validating at build time that the VDSO is legacy free if disabled. - Consolidate the VDSO related config options in core and drivers, which removes some non-sensical dependencies and quite an amount of #ifdeffery. - Clean up the PAGE_SIZE definition maze * tag 'timers-vdso-2026-08-17' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (30 commits) random: vDSO: Drop custom PAGE_SIZE definitions LoongArch: Remove CONFIG_GENERIC_GETTIMEOFDAY ifdeffery clocksource/drivers/timer-riscv: Remove CONFIG_GENERIC_GETTIMEOFDAY ifdeffery clocksource/drivers/arm_arch_timer: Remove CONFIG_GENERIC_GETTIMEOFDAY ifdeffery clocksource/drivers/mips-gic-timer: Remove CONFIG_GENERIC_GETTIMEOFDAY ifdeffery MIPS: csrc-r4k: Remove CONFIG_GENERIC_GETTIMEOFDAY ifdeffery vDSO: Make clockmode constants available without CONFIG_GENERIC_GETTIMEOFDAY kbuild: Support generated asm-headers in subdirectories vdso: Rename HAVE_GENERIC_VDSO to VDSO_DATASTORE vdso: Drop HAVE_GENERIC_VDSO from architecture kconfig files vdso: Automatically select HAVE_GENERIC_VDSO if necessary MIPS: vdso: Stop using CONFIG_HAVE_GENERIC_VDSO vdso: Remove the dependency on HAVE_GENERIC_VDSO from ARCH_HAS_VDSO_ARCH_DATA futex: Remove dependency on HAVE_GENERIC_VDSO from FUTEX_ROBUST_UNLOCK vdso/gettimeofday: Verify COMPAT_32BIT_TIME interactions sparc: vdso: Respect COMPAT_32BIT_TIME MIPS: VDSO: Respect COMPAT_32BIT_TIME powerpc/vdso: Respect COMPAT_32BIT_TIME ARM: VDSO: Respect COMPAT_32BIT_TIME arm64: vdso32: Respect COMPAT_32BIT_TIME ...

Merge tag 'timers-core-2026-08-17' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

2026-08-18T23:23:56+00:00

Pull timer and timekeeping core updates from Thomas Gleixner: - Fix a subtly inconsistency in the timekeeping code, which fails to account for the monotonicity adjustment in ntp_error. For small changes of the clocksource multiplicator (+/-1) which are typically used by the NTP PLL this is hard to observe. But for larger adjustments, e.g. caused by a direct frequency setting through adjtimex() the one-time uncompensated offset is significant. Cure this by adjusting ntp_error with the resulting offset so that the discrepancy is smoothed away over time - Make tick length calculations correct in NTP. The timekeeping core takes the quantisation of the clocksource into account when calculating the tick length to compensate for the deviation of the nominal NTP_INTERVAL_LENGTH. While timekeeping gets this right, NTP is not aware of that, which means it operates on the nominal value and not on the actual value which is determined by the clock source frequency. The rounding of a coarse clocksource like the ACPI PM timer results in a +127 PPM deviation. Cure this by exposing the deviation to the NTP code so that it can operate on the same data as the timekeeping core. This is purely kernel internal. User space still sees the nominal tick lenght via adjtimex(). - The accuracy of the NTP adjustments is fairly approximate as the code assumes that the invocations are precisely in NTP interval frequency ticks and the final adjustment can over and under-run. Cure this by adjusting ntp_error by the intended skew on each tick to achieve the desired rate. - Handle the two competing skews of time offset and time adjustment correctly by calculating the conflict portion between the skews and adjusting both accordingly. - A set of updates and improvements for the selftests - The usual small fixes and improvements all over the place * tag 'timers-core-2026-08-17' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (58 commits) selftests: timers: nsleep-lat: Check all calls to clock_nanosleep() and clock_gettime() selftests: timers: nsleep-lat: Reuse kselftest error numbers selftests: timers: nsleep-lat: Explicitly list the tested clocks selftests: timers: nsleep-lat: Use NSEC_PER_MSEC define for unreasonable latency selftests: timers: nanosleep: Report each test separately selftests: timers: nanosleep: Explicitly handle timer_delete() failure selftests: timers: nanosleep: Move all single clock tests out of the loop in main() selftests: timers: nanosleep: Reuse kselftest error numbers selftests: timers: nanosleep: Explicitly list the tested clocks selftests: timers: nanosleep: Drop output alignment selftests: timers: Use clock_name() and constants from clock-helpers.h selftests: Add clock-helpers.h timer_list: Use ktime_t over nanoseconds timer_list: Use standard 'long long' format placeholders hrtimer: Add a lockdep assertion to hrtimer_update_base() timekeeping: Use u32 for clock_was_set_seq timekeeping: Rename clockid_aux_valid() to clockid_is_aux_clock() hrtimer: Account nr_retries on recovered interrupt retries timers/itimer: Zero-init old itimerval before copy to userspace nohz: Replace dead select with choice default ...

timer: Keep debugobjects state consistent in migrate_timer_list()

2026-08-18T08:51:43+00:00

When timers are migrated away from an offline CPU the debugobjects state gets corrupted. The timer is accounted as inactive on deletion, but the enqueue on the alive CPU lacks the activation call. That used to work, but got broken when the trace point and the debug objects call got separated. That change missed to fixup migrate_timer_list(). Add the missing debug_timer_activate() invocation to fix it. Fixes: dc1e7dc5ac62 ("timer: Move trace point to get proper index") Signed-off-by: Thomas Gleixner Cc: stable@vger.kernel.org Link: https://patch.msgid.link/87bjb0l7ha.ffs@fw13

Merge branch 'features' into for-next

2026-08-13T15:00:53+00:00

* features: 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 s390/crypto: Replace cond_resched() with msleep(1) s390/Kconfig: Select ARCH_SUPPORTS_CFI s390/bpf: Add kCFI support s390/diag: Generate CFI type information for assembly functions s390: Add ftrace_stub_graph s390/tools/relocs: Ignore __kcfi_typeid_ relocations s390/tools: Pass symbol name to do_relocs() s390/smp: Reflect (de)configured CPUs to cpu_enabled_mask s390/sclp: Allow SCLP Action Qualifiers for Spyre card status reporting s390/ap: Fix queue depth field length s390/configs: Increase CONFIG_LOCKDEP_CHAINS_BITS s390: Add support for DCACHE_WORD_ACCESS (again) s390/mm: Use goto statement in do_secure_storage_access() s390/mm: Use handle_fault_error() in do_secure_storage_access() s390/mm: Remove folio handling for kernel faults in do_secure_storage_access() s390/mm: Fix handling of vmalloc area in do_secure_storage_access() s390/mm: Use lock_mm_and_find_vma() in do_secure_storage_access() s390/mm: Add missing mm check to do_secure_storage_access() KVM: s390: pv: Use VM_SPARSE area for guest variable storage area s390/spinlock: Add contention tracepoints to lock slowpath s390/ipl: Improve readability s390/ipl: Use ARRAY_SIZE macro s390/maccess: Use proper PTE accessors for copying old memory s390/pkey: Rework ioctl functions error paths s390/ap: Use mutex_lock_killable() in ap_bus_force_rescan() s390/vdso: Use symbolic constants for the PHDR permission flags s390/vdso: Pass --eh-frame-hdr to the linker s390/syscalls: Use define instead of '1' to indicate PER trap s390/traps: Remove PIF_GUEST_FAULT s390/uapi: Remove obsolete unistd_32.h from Kbuild file s390: Select SWIOTLB_DYNAMIC and DMA_COHERENT_POOL s390/pv: Enable SWIOTLB_ANY for s390 PV s390/traps: Add exception statistics s390/configs: Enable cpuidle driver on s390 s390/idle: Introduce cpuidle for s390 s390: Enable TIF_POLLING_NRFLAG tick: Remove arch_needs_cpu s390/tick: Remove CIF_NOHZ_DELAY flag s390/mm: Use set_pmd() / set_pud() for hugetlb pagetable entries Signed-off-by: Vasily Gorbik

timer_list: Use ktime_t over nanoseconds

2026-08-11T16:11:20+00:00

hrtimers use ktime_t in their implementation and API. The timer list performs a lot of unnecessary conversion to nanoseconds which make the code harder to read and are also wrong in case the values ever become negative. Remove the conversions. Signed-off-by: Thomas Weißschuh (Schneider Electric) Signed-off-by: Thomas Gleixner Link: https://patch.msgid.link/20260803-auxclock-nanosleep-prep-v2-5-910cbd485390@linutronix.de

timer_list: Use standard 'long long' format placeholders

2026-08-11T16:11:20+00:00

'%Ld' and '%Lu' are GNU extensions. While they do work for kernel code, checkpatch complains about them all the time. Replace them with the standard placeholders for 'long long' types, namely '%lld' and '%llu'. Signed-off-by: Thomas Weißschuh (Schneider Electric) Signed-off-by: Thomas Gleixner Link: https://patch.msgid.link/20260803-auxclock-nanosleep-prep-v2-4-910cbd485390@linutronix.de