Irqd_irq_inprogress

Author: cuza

August undefined, 2024

http://www.wowotech.net/irq_subsystem/irq_handle_procedure.html/comment-page-2 Webirqd_irq_inprogress()是判断irq是否设置了IRQD_IRQ_INPROGRESS 标志位。标识hardirq thread正在执行，IRQD_IRQ_INPROGRESS在handle_irq_event()执行开始设置，等到handle_irq_event_percpu()执行完毕之后，同样在handle_irq_event()之后清除。因此hardirq handler执行结束之前系统不会睡眠。

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WebThe 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! Web[tip:x86/apic] x86, uv: Use hierarchy irqdomain to manage UV interrupts From: tip-bot for Jiang Liu Date: Wed Nov 26 2014 - 18:12:30 EST Next message: tip-bot for Jiang Liu: "[tip:x86/apic] x86, irq: Normalize x86 irq_chip name" Previous message: Heiko Stübner: "Re: [PATCH] clk: rockchip: rk3288 export i2s0_clkout for use in DT" In reply to: Jiang Liu: … dak shack red oak

indicates whether irqd_set_trigger_type has been called, and

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. WebJun 26, 2014 · irq_desc [irq].status & (IRQ_DISABLED IRQ_INPROGRESS) Yields a true result when either of the IRQ_DISABLED or IRQ_INPROGRESS bits is set in the .status … biotin carboxylase 1

Linux interrupt (Interrupt) subsystem 3: Central cut-off control ...

linux中断源码分析 - 中断发生(三) - tolimit - 博客园

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 biotin cancer riskhttp://visa.lab.asu.edu/gitlab/fstrace/android-kernel-msm-hammerhead-3.4-marshmallow-mr3/blob/2760f7adbb6c4e39bd3ae733f56d4ac8fb5e3521/kernel/irq/chip.c biotin carboxylase

"WebJan 19, 2024 · Are there any other possibilities of corrupting IRQD_IRQ_INPROGRESS state bit other than concurrent accesses? I did another experiment, changed the bit manipulation of the IRQD state to atomic operations, the issue is not reproducible. struct irq_common_data " - Irqd_irq_inprogress

Irqd_irq_inprogress

WebThis 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); WebApr 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 …

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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 … 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 …

WebMar 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, WebMay 10, 2024 · manage.c - kernel/irq/manage.c - Linux source code (v6.2.5) - Bootlin. Elixir Cross Referencer - Explore source code in your browser - Particularly useful for the Linux …

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 … 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

Webkernel/irq/chip.c · 2760f7adbb6c4e39bd3ae733f56d4ac8fb5e3521 · fstrace / android-kernel-msm-hammerhead-3.4-marshmallow-mr3 · GitLab Linux kernel for Nexus 5 …

WebMay 10, 2024 · This might * give the wrong answer due to the lack of memory barriers. */ while (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 ... biotin capsules walmartWebName: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 … biotin can regrow hairhttp://visa.lab.asu.edu/gitlab/fstrace/android-kernel-msm-hammerhead-3.4-marshmallow-mr3/blob/2d7b53a81335b57a16a75ec0990d7fb598f4ddc9/include/linux/irq.h daksh actor* IRQD_IRQ_STARTED - Startup state of the interrupt * IRQD_MANAGED_SHUTDOWN - Interrupt was shutdown due to empty affinity * mask. Applies only to affinity managed irqs. * IRQD_SINGLE_TARGET - IRQ allows only a single affinity target * IRQD_DEFAULT_TRIGGER_SET - Expected trigger already been set * IRQD_CAN_RESERVE - Can use reservation mode biotin capsules bootsWebThat activation must happen* independently of IRQ_NOAUTOEN. request_irq() can fail* and the callers are supposed to handle* that. enable_irq() of an interrupt requested with* IRQ_NOAUTOEN is not supposed to fail. The activation* keeps it in shutdown mode, it merily associates* resources if necessary and if that's not possible it* fails. daksha fellowshipWebMar 29, 2024 · IRQD_IRQ_INPROGRESS = (1 << 18), IRQD_WAKEUP_ARMED = (1 << 19), IRQD_FORWARDED_TO_VCPU = (1 << 20), + IRQD_DEFAULT_TRIGGER_SET = (1 << 25),}; … daksha medical systemsWebThe 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! biotin cancer