Irqd_irq_inprogress

Author: lvjo

August undefined, 2024

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 … 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 …

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

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 … WebLinux kernel for Nexus 5 (hammerhead) crystal shop cannock

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

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 = … 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• 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 ... dylan hot fire

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KVM: arm64: vgic: Fix soft lockup during VM teardown - Patchwork

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 … 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, … crystal shop cdaWebLKML 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: … dylan holland facebook

"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 ... " - Irqd_irq_inprogress

Irqd_irq_inprogress

c - Explanation of __do_IRQ function - Stack Overflow

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. 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.

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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 … 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

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

WebMar 29, 2024 · IRQD_IRQ_INPROGRESS = (1 << 18), IRQD_WAKEUP_ARMED = (1 << 19), IRQD_FORWARDED_TO_VCPU = (1 << 20), + IRQD_DEFAULT_TRIGGER_SET = (1 << 25),}; …

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 … crystal shop centralia waWebJan 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 … crystal shop cat houseWeb* 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 … crystal shop chattanoogaWebApr 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 … dylan hotel 52 e 41st st new yorkWebwhile (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 crystal shop charlotteWeb> 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 ... dylan houser setup shopWebThe 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! dylan houser warsaw indiana