Irqd_irq_inprogress

Author: vhwc

August undefined, 2024

WebIRQ, and then ack IRQ (usually associated with mask_ack_irq). Even if the device sends an interrupt request again, the handle_irq_event ends and the irq_inprogress mark is cleared after unmask IRQ. I don't know if other systems like x86 have different behaviors. If you know something, please let me know. Web* IRQD_IRQ_MASKED - Masked state of the interrupt * IRQD_IRQ_INPROGRESS - In progress state of the interrupt * IRQD_WAKEUP_ARMED - Wakeup mode armed * IRQD_FORWARDED_TO_VCPU - The interrupt is forwarded to a VCPU * IRQD_AFFINITY_MANAGED - Affinity is auto-managed by the kernel * IRQD_IRQ_STARTED …

Linux-Kernel Archive: Re: Unfair qspinlocks on ARM64 without LSE ...

Web• handle_fasteoi_irq • handle_edge_irq • handle_percpu_irq Each of these sets the IRQ descriptor’s status ﬂag IRQ_INPROGRESS, and then calls redirect_ hardirq(). redirect_hardirq()checksifthreadedinterrupts are enabled, and if the current IRQ is threaded (the IRQ ﬂag IRQ_NODELAY is not set) then the associ-ated thread (do_irqd) is ... ipone change bluetooth double click

c - Explanation of __do_IRQ function - Stack Overflow

Webwhile (irqd_irq_inprogress (&desc-> irq_data)) cpu_relax (); /* Ok, that indicated we're done: double-check carefully. */ raw_spin_lock_irqsave (&desc-> lock, flags); inprogress = … Webkernel/irq/chip.c · 2760f7adbb6c4e39bd3ae733f56d4ac8fb5e3521 · fstrace / android-kernel-msm-hammerhead-3.4-marshmallow-mr3 · GitLab Linux kernel for Nexus 5 … WebJan 17, 2024 · The irqd_set_activated() execution path is reading memory 'state_use_accessors' in between set & clear of IRQD_IRQ_INPROGRESS state change and … orbital insight revenue

[PATCH] KVM: arm64: vgic: Fix soft lockup during VM teardown

Irqd_irq_inprogress

kernel/irq/manage.c - Linux source code (v5.4.44) - Bootlin

WebLKML Archive on lore.kernel.org help / color / mirror / Atom feed * [RFC PATCH] genirq: introduce handle_fasteoi_edge_irq flow handler @ 2024-03-10 10:14 Yipeng Zou 2024-04-14 11:25 ` Marc Zyngier 0 siblings, 1 reply; 3+ messages in thread From: Yipeng Zou @ 2024-03-10 10:14 UTC (permalink / raw) To: tglx, maz, samuel, oleksandr_tyshchenko, … Webwhile (irqd_irq_inprogress (&desc->irq_data)) cpu_relax (); /* Ok, that indicated we're done: double-check carefully. */ raw_spin_lock_irqsave (&desc->lock, flags); inprogress = irqd_irq_inprogress (&desc->irq_data); /* * If requested and supported, check at the chip whether it * is in flight at the hardware level, i.e. already pending

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Web* handle_fasteoi_irq - irq handler for transparent controllers * @irq: the interrupt number @@ -448,6 +482,8 @@ static inline void preflow_handler(struct irq_desc *desc) { } void … WebApr 28, 2015 · 设置中断描述符的状态为IRQD_IRQ_INPROGRESS：在SMP系统中，同一个中断信号有可能发往多个CPU，但是中断处理只应该处理一次，所以设置状态 …

http://www.bricktou.com/kernel/irq/chiphandle_nested_irq_en.html WebJan 17, 2024 · irqd_set(&desc->irq_data, IRQD_IRQ_INPROGRESS); raw_spin_unlock(&desc->lock); ret = handle_irq_event_percpu(desc); raw_spin_lock(&desc->lock); irqd_clear(&desc …

WebName:handle_nested_irq - Handle a nested irq from a irq thread*@irq: the interrupt number* Handle interrupts which are nested into a threaded interrupt* handler. The handler … Web> irqd_clear(&desc->irq_data, IRQD_IRQ_INPROGRESS); > return ret; >} > > It took ~3 ms for this raw_spin_lock() to lock. That's quite a large indeed. > During this time irq_finalize_oneshot() from kernel/irq/manage.c locks and > unlocks the same raw spin lock more than 1000 times: > > static void irq_finalize_oneshot(struct irq_desc *desc ...

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WebVDOMDHTMLtml>. manage.c - kernel/irq/manage.c - Linux source code (v5.4.44) - Bootlin. Elixir Cross Referencer - Explore source code in your browser - Particularly useful for the … orbital interaction in chemistryWebMar 24, 2024 · > irqd_clear(&desc->irq_data, IRQD_IRQ_INPROGRESS); > return ret; > } > > It took ~3 ms for this raw_spin_lock() to lock. That's quite a large indeed. > During this time irq_finalize_oneshot() from kernel/irq/manage.c locks and > unlocks the same raw spin lock more than 1000 times: > > static void irq_finalize_oneshot(struct irq_desc *desc, orbital insight valuationWebThe function __synchronize_hardirq() has been waiting for IRQD_IRQ_INPROGRESS to be cleared forever as per the current implementation. CPU stuck here for a long time leads to soft lockup: while (irqd_irq_inprogress(&desc->irq_data)) cpu_relax(); Call trace from the lockup CPU: [ 87.238866] watchdog: BUG: soft lockup - CPU#37 stuck for 23s! orbital interactions in chemistry solutionWebJan 18, 2024 · The irqd_set_activated () execution path is reading memory 'state_use_accessors' in between set & clear of IRQD_IRQ_INPROGRESS state change and … orbital interactions in chemistryWebirqd_clear(&desc->irq_data, IRQD_IRQ_INPROGRESS); return ret;} It took ~3 ms for this raw_spin_lock() to lock. During this time irq_finalize_oneshot() from kernel/irq/manage.c locks and unlocks the same raw spin lock more than 1000 times: static void irq_finalize_oneshot(struct irq_desc *desc, struct irqaction *action) orbital internet speed testWebThis enables support. * for modern forms of interrupt handlers, which handle the flow. * details in hardware, transparently. */. void handle_fasteoi_nmi ( struct irq_desc *desc) {. struct irq_chip *chip = irq_desc_get_chip (desc); struct irqaction *action = desc-> action; unsigned int irq = irq_desc_get_irq (desc); ipone moto washWebApr 28, 2015 · 其实代码上很简单，我们需要注意几个屏蔽中断的方式：清除EFLAGS的IF标志、通知中断控制器屏蔽指定中断、设置中断描述符的状态为IRQD_IRQ_INPROGRESS 。在上述代码中这三种状态都使用到了，我们具体解释一下：清除EFLAGS的IF标志： CPU禁止中断，当CPU进入到中断处理时自动会清除EFLAGS的IF标志，也就是进入中断处理时会自 … orbital insight oil