2024 Irqd_irq_inprogress

Irqd_irq_inprogress

Author: uuap

August undefined, 2024

WebJul 27, 2024 · Must be set to the constant value IRQType_Range. One bit flag from each of the flag sets described in the following table. The IRQ line cannot be shared. The IRQ line can be shared. Bitmask for the bits within IRQD_Flags that specify the sharing value. The IRQ line is level-triggered. The IRQ line is edge-triggered. 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 …

[PATCH v3 1/4] irq: Add a new IRQCHIP_EOI_THREADED flag - IU

* 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 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 … i\u0027m laughing to keep from crying

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

WebAn irq_domain to manage mapping is preferred over interrupt controller drivers open coding their own reverse mapping scheme. irq_domain also implements translation from an … 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, … 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 … netspend set up online account

Unfair qspinlocks on ARM64 without LSE atomics => 3ms delay in ...

C++ (Cpp) irq_to_desc Examples - HotExamples

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: … Webirqd_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) i\u0027m laughing so hard english can\u0027t be rubbishWebLKML Archive on lore.kernel.org help / color / mirror / Atom feed * [PATCH] irq: fasteoi handler re-runs on concurrent invoke @ 2024-03-17 9:53 James Gowans 2024-03-17 10:12 ` Yipeng Zou 2024-04-09 11:41 ` Marc Zyngier 0 siblings, 2 replies; 13+ messages in thread From: James Gowans @ 2024-03-17 9:53 UTC (permalink / raw) To: Thomas Gleixner Cc: … i\u0027m laughing so hard right now

"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! " - Irqd_irq_inprogress

Irqd_irq_inprogress

linux/irq.h at master · torvalds/linux · GitHub

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

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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 … 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。

WebThat 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. 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 …

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 ... 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);

WebMar 24, 2024 · irqd_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 …

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 … i\u0027m laughing so hard i can\u0027t breatheWebwhile (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 netspend skylight account loginWebJan 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 … netspend sharepointhttp://www.wowotech.net/irq_subsystem/irq_handle_procedure.html/comment-page-2 netspend skylight activateWebkernel/irq/chip.c · 2760f7adbb6c4e39bd3ae733f56d4ac8fb5e3521 · fstrace / android-kernel-msm-hammerhead-3.4-marshmallow-mr3 · GitLab Linux kernel for Nexus 5 … netspend sign in to check your accountWebSign in. android / kernel / omap / glass-omap-xrv87 / . / kernel / irq / manage.c. blob: 3d1bbbcc2923df794ec1cc70b409b5390af919d6 [] [] [] i\u0027m laughing on the outside slowedWebMar 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, netspend skylight account