Irqd_irq_inprogress
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 … WebThese are the top rated real world C++ (Cpp) examples of irq_to_desc extracted from open source projects. You can rate examples to help us improve the quality of examples. …
Irqd_irq_inprogress
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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 ... WebLKML 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: …
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, 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。
* 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 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 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 …
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),}; … phlearn 5 beautiful effects with gradientsWeb[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: … phlearn iphonephlearn focus stackingWebThe 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! phlearn holiday contestWebMay 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 … phlearn lightingWebJun 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 … tss remoteWebName: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 … phlearn lipstick