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- Core: - The timer_shutdown[_sync]() infrastructure: Tearing down timers can be tedious when there are circular dependencies to other things which need to be torn down. A prime example is timer and workqueue where the timer schedules work and the work arms the timer. What needs to prevented is that pending work which is drained via destroy_workqueue() does not rearm the previously shutdown timer. Nothing in that shutdown sequence relies on the timer being functional. The conclusion was that the semantics of timer_shutdown_sync() should be: - timer is not enqueued - timer callback is not running - timer cannot be rearmed Preventing the rearming of shutdown timers is done by discarding rearm attempts silently. A warning for the case that a rearm attempt of a shutdown timer is detected would not be really helpful because it's entirely unclear how it should be acted upon. The only way to address such a case is to add 'if (in_shutdown)' conditionals all over the place. This is error prone and in most cases of teardown not required all. - The real fix for the bluetooth HCI teardown based on timer_shutdown_sync(). A larger scale conversion to timer_shutdown_sync() is work in progress. - Consolidation of VDSO time namespace helper functions - Small fixes for timer and timerqueue - Drivers: - Prevent integer overflow on the XGene-1 TVAL register which causes an never ending interrupt storm. - The usual set of new device tree bindings - Small fixes and improvements all over the place -----BEGIN PGP SIGNATURE----- iQJHBAABCgAxFiEEQp8+kY+LLUocC4bMphj1TA10mKEFAmOUuC0THHRnbHhAbGlu dXRyb25peC5kZQAKCRCmGPVMDXSYodpZD/9kCDi009n65QFF1J4kE5aZuABbRMtO 7sy66fJpDyB/MtcbPPH29uzQUEs1VMTQVB+ZM+7e1YGoxSWuSTzeoFH+yK1w4tEZ VPbOcvUEjG0esKUehwYFeOjSnIjy6M1Y41aOUaDnq00/azhfTrzLxQA1BbbFbkpw S7u2hllbyRJ8KdqQyV9cVpXmze6fcpdtNhdQeoA7qQCsSPnJ24MSpZ/PG9bAovq8 75IRROT7CQRd6AMKAVpA9Ov8ak9nbY3EgQmoKcp5ZXfXz8kD3nHky9Lste7djgYB U085Vwcelt39V5iXevDFfzrBYRUqrMKOXIf2xnnoDNeF5Jlj5gChSNVZwTLO38wu RFEVCjCjuC41GQJWSck9LRSYdriW/htVbEE8JLc6uzUJGSyjshgJRn/PK4HjpiLY AvH2rd4rAap/rjDKvfWvBqClcfL7pyBvavgJeyJ8oXyQjHrHQwapPcsMFBm0Cky5 soF0Lr3hIlQ9u+hwUuFdNZkY9mOg09g9ImEjW1AZTKY0DfJMc5JAGjjSCfuopVUN Uf/qqcUeQPSEaC+C9xiFs0T3svYFxBqpgPv4B6t8zAnozon9fyZs+lv5KdRg4X77 qX395qc6PaOSQlA7gcxVw3vjCPd0+hljXX84BORP7z+uzcsomvIH1MxJepIHmgaJ JrYbSZ5qzY5TTA== =JlDe -----END PGP SIGNATURE----- Merge tag 'timers-core-2022-12-10' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip Pull timer updates from Thomas Gleixner: "Updates for timers, timekeeping and drivers: Core: - The timer_shutdown[_sync]() infrastructure: Tearing down timers can be tedious when there are circular dependencies to other things which need to be torn down. A prime example is timer and workqueue where the timer schedules work and the work arms the timer. What needs to prevented is that pending work which is drained via destroy_workqueue() does not rearm the previously shutdown timer. Nothing in that shutdown sequence relies on the timer being functional. The conclusion was that the semantics of timer_shutdown_sync() should be: - timer is not enqueued - timer callback is not running - timer cannot be rearmed Preventing the rearming of shutdown timers is done by discarding rearm attempts silently. A warning for the case that a rearm attempt of a shutdown timer is detected would not be really helpful because it's entirely unclear how it should be acted upon. The only way to address such a case is to add 'if (in_shutdown)' conditionals all over the place. This is error prone and in most cases of teardown not required all. - The real fix for the bluetooth HCI teardown based on timer_shutdown_sync(). A larger scale conversion to timer_shutdown_sync() is work in progress. - Consolidation of VDSO time namespace helper functions - Small fixes for timer and timerqueue Drivers: - Prevent integer overflow on the XGene-1 TVAL register which causes an never ending interrupt storm. - The usual set of new device tree bindings - Small fixes and improvements all over the place" * tag 'timers-core-2022-12-10' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (34 commits) dt-bindings: timer: renesas,cmt: Add r8a779g0 CMT support dt-bindings: timer: renesas,tmu: Add r8a779g0 support clocksource/drivers/arm_arch_timer: Use kstrtobool() instead of strtobool() clocksource/drivers/timer-ti-dm: Fix missing clk_disable_unprepare in dmtimer_systimer_init_clock() clocksource/drivers/timer-ti-dm: Clear settings on probe and free clocksource/drivers/timer-ti-dm: Make timer_get_irq static clocksource/drivers/timer-ti-dm: Fix warning for omap_timer_match clocksource/drivers/arm_arch_timer: Fix XGene-1 TVAL register math error clocksource/drivers/timer-npcm7xx: Enable timer 1 clock before use dt-bindings: timer: nuvoton,npcm7xx-timer: Allow specifying all clocks dt-bindings: timer: rockchip: Add rockchip,rk3128-timer clockevents: Repair kernel-doc for clockevent_delta2ns() clocksource/drivers/ingenic-ost: Define pm functions properly in platform_driver struct clocksource/drivers/sh_cmt: Access registers according to spec vdso/timens: Refactor copy-pasted find_timens_vvar_page() helper into one copy Bluetooth: hci_qca: Fix the teardown problem for real timers: Update the documentation to reflect on the new timer_shutdown() API timers: Provide timer_shutdown[_sync]() timers: Add shutdown mechanism to the internal functions timers: Split [try_to_]del_timer[_sync]() to prepare for shutdown mode ... |
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.. | ||
acpi_pm.c | ||
arc_timer.c | ||
arm_arch_timer.c | ||
arm_global_timer.c | ||
armv7m_systick.c | ||
asm9260_timer.c | ||
bcm2835_timer.c | ||
bcm_kona_timer.c | ||
clksrc_st_lpc.c | ||
clksrc-dbx500-prcmu.c | ||
clps711x-timer.c | ||
dummy_timer.c | ||
dw_apb_timer_of.c | ||
dw_apb_timer.c | ||
em_sti.c | ||
exynos_mct.c | ||
hyperv_timer.c | ||
i8253.c | ||
ingenic-ost.c | ||
ingenic-sysost.c | ||
ingenic-timer.c | ||
jcore-pit.c | ||
Kconfig | ||
Makefile | ||
mips-gic-timer.c | ||
mmio.c | ||
mps2-timer.c | ||
mxs_timer.c | ||
nomadik-mtu.c | ||
numachip.c | ||
renesas-ostm.c | ||
samsung_pwm_timer.c | ||
scx200_hrt.c | ||
sh_cmt.c | ||
sh_mtu2.c | ||
sh_tmu.c | ||
timer-armada-370-xp.c | ||
timer-atmel-pit.c | ||
timer-atmel-st.c | ||
timer-atmel-tcb.c | ||
timer-cadence-ttc.c | ||
timer-clint.c | ||
timer-cs5535.c | ||
timer-davinci.c | ||
timer-digicolor.c | ||
timer-fsl-ftm.c | ||
timer-fttmr010.c | ||
timer-goldfish.c | ||
timer-gx6605s.c | ||
timer-gxp.c | ||
timer-imx-gpt.c | ||
timer-imx-sysctr.c | ||
timer-imx-tpm.c | ||
timer-integrator-ap.c | ||
timer-ixp4xx.c | ||
timer-keystone.c | ||
timer-lpc32xx.c | ||
timer-mediatek.c | ||
timer-meson6.c | ||
timer-microchip-pit64b.c | ||
timer-milbeaut.c | ||
timer-mp-csky.c | ||
timer-msc313e.c | ||
timer-npcm7xx.c | ||
timer-of.c | ||
timer-of.h | ||
timer-orion.c | ||
timer-owl.c | ||
timer-oxnas-rps.c | ||
timer-pistachio.c | ||
timer-probe.c | ||
timer-pxa.c | ||
timer-qcom.c | ||
timer-rda.c | ||
timer-riscv.c | ||
timer-rockchip.c | ||
timer-sp804.c | ||
timer-sp.h | ||
timer-sprd.c | ||
timer-stm32-lp.c | ||
timer-stm32.c | ||
timer-sun4i.c | ||
timer-sun5i.c | ||
timer-tegra186.c | ||
timer-tegra.c | ||
timer-ti-32k.c | ||
timer-ti-dm-systimer.c | ||
timer-ti-dm.c | ||
timer-versatile.c | ||
timer-vf-pit.c | ||
timer-vt8500.c | ||
timer-zevio.c |