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- Core: - Overhaul of posix-timers in preparation of removing the workaround for periodic timers which have signal delivery ignored. - Remove the historical extra jiffie in msleep() msleep() adds an extra jiffie to the timeout value to ensure minimal sleep time. The timer wheel ensures minimal sleep time since the large rewrite to a non-cascading wheel, but the extra jiffie in msleep() remained unnoticed. Remove it. - Make the timer slack handling correct for realtime tasks. The procfs interface is inconsistent and does neither reflect reality nor conforms to the man page. Show the correct 0 slack for real time tasks and enforce it at the core level instead of having inconsistent individual checks in various timer setup functions. - The usual set of updates and enhancements all over the place. - Drivers: - Allow the ACPI PM timer to be turned off during suspend - No new drivers - The usual updates and enhancements in various drivers -----BEGIN PGP SIGNATURE----- iQJHBAABCgAxFiEEQp8+kY+LLUocC4bMphj1TA10mKEFAmbn7jQTHHRnbHhAbGlu dXRyb25peC5kZQAKCRCmGPVMDXSYobqnD/9COlU0nwsulABI/aNIrsh6iYvnCC9v 14CcNta7Qn+157Wfw9BWOyHdNhR1/fPCXE8jJ71zTyIOeW27HV2JyTtxTwe9ZcdK ViHAaj7YcIjcVUEC3StCoRCPnvLslEw4qJA5AOQuDyMivdQn+YVa2c0baJxKaXZt xk4HZdMj4NAS0jRKnoZSwtKW/+Oz6rR4GAWrZo+Zs1/8ur3HfqnQfi8lJ1hJtLLW V7XDCVRvamVi6Ah3ocYPPp/1P6yeQDA1ge9aMddqaza5STWISXRtSnFMUmYP3rbS FaL8TyL+ilfny8pkGB2WlG6nLuSbtvogtdEh1gG1k1RmZt44kAtk8ba/KiWFPBSb zK9cjojRMBS71f9G4kmb5F4rnXoLsg1YbD1Nzhz3wq2Cs1Z90dc2QwMren0zoQ1x Fn56ueRyAiagBlnrSaKyso/2RvqJTNoSdi3RkpjYeAph0UoDCqvTvKjGAf1mWiw1 T/1lUWSVqWHnzZbM7XXzzajIN9bl6A7bbqlcAJ2O9vZIDt7273DG+bQym9Vh6Why 0LTGGERHxzKBsG7WRg+2Gmvv6S18UPKRo8tLtlA758rHlFuPTZCShWrIriwSNl1K Hxon+d4BparSnm1h9W/NHPKJA574UbWRCBjdk58IkAj8DxZZY4ORD9SMP+ggkV7G F6p9cgoDNP9KFg== =jE0N -----END PGP SIGNATURE----- Merge tag 'timers-core-2024-09-16' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip Pull timer updates from Thomas Gleixner: "Core: - Overhaul of posix-timers in preparation of removing the workaround for periodic timers which have signal delivery ignored. - Remove the historical extra jiffie in msleep() msleep() adds an extra jiffie to the timeout value to ensure minimal sleep time. The timer wheel ensures minimal sleep time since the large rewrite to a non-cascading wheel, but the extra jiffie in msleep() remained unnoticed. Remove it. - Make the timer slack handling correct for realtime tasks. The procfs interface is inconsistent and does neither reflect reality nor conforms to the man page. Show the correct 0 slack for real time tasks and enforce it at the core level instead of having inconsistent individual checks in various timer setup functions. - The usual set of updates and enhancements all over the place. Drivers: - Allow the ACPI PM timer to be turned off during suspend - No new drivers - The usual updates and enhancements in various drivers" * tag 'timers-core-2024-09-16' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (43 commits) ntp: Make sure RTC is synchronized when time goes backwards treewide: Fix wrong singular form of jiffies in comments cpu: Use already existing usleep_range() timers: Rename next_expiry_recalc() to be unique platform/x86:intel/pmc: Fix comment for the pmc_core_acpi_pm_timer_suspend_resume function clocksource/drivers/jcore: Use request_percpu_irq() clocksource/drivers/cadence-ttc: Add missing clk_disable_unprepare in ttc_setup_clockevent clocksource/drivers/asm9260: Add missing clk_disable_unprepare in asm9260_timer_init clocksource/drivers/qcom: Add missing iounmap() on errors in msm_dt_timer_init() clocksource/drivers/ingenic: Use devm_clk_get_enabled() helpers platform/x86:intel/pmc: Enable the ACPI PM Timer to be turned off when suspended clocksource: acpi_pm: Add external callback for suspend/resume clocksource/drivers/arm_arch_timer: Using for_each_available_child_of_node_scoped() dt-bindings: timer: rockchip: Add rk3576 compatible timers: Annotate possible non critical data race of next_expiry timers: Remove historical extra jiffie for timeout in msleep() hrtimer: Use and report correct timerslack values for realtime tasks hrtimer: Annotate hrtimer_cpu_base_.*_expiry() for sparse. timers: Add sparse annotation for timer_sync_wait_running(). signal: Replace BUG_ON()s ... |
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README |
Linux kernel ============ There are several guides for kernel developers and users. These guides can be rendered in a number of formats, like HTML and PDF. Please read Documentation/admin-guide/README.rst first. In order to build the documentation, use ``make htmldocs`` or ``make pdfdocs``. The formatted documentation can also be read online at: https://www.kernel.org/doc/html/latest/ There are various text files in the Documentation/ subdirectory, several of them using the reStructuredText markup notation. Please read the Documentation/process/changes.rst file, as it contains the requirements for building and running the kernel, and information about the problems which may result by upgrading your kernel.