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From: "Rafael J. Wysocki" <rjw@rjwysocki.net>
To: Thomas Gleixner <tglx@linutronix.de>
Cc: Peter Zijlstra <peterz@infradead.org>,
	Linux PM list <linux-pm@vger.kernel.org>,
	Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
	Linux PCI <linux-pci@vger.kernel.org>
Subject: [PATCH 0/6 v2] irq / PM: Shared IRQs vs IRQF_NO_SUSPEND and suspend-to-idle wakeup interrupts
Date: Mon, 11 Aug 2014 15:56:46 +0200	[thread overview]
Message-ID: <26580319.OZP7jvJnA9@vostro.rjw.lan> (raw)

Hi,

I thought I'd just refresh the previous patchset, but in the meantime I found
a way to avoid adding overhead to note_interrupt(), so I decided to change the
approach.

Patch [2/6] fixes the problem with IRQF_NO_SUSPEND and shared interrupts.  The
idea is to use wrapper handlers for all irqactions of the shared IRQs where at
least one of them has IRQF_NO_SUSPEND set.  Since the wrapper handler is now
installed for all irqactions in the given irq_desc, it can track the return
codes from the original handlers and "suspend" the IRQ if the interrupt is going
to be unhandled eventually.  All described in the changelog.  This is independent
of the handling of wakeup interrupts for suspend-to-idle.

Patch [3/6] makes IRQs configured for system wakeup with enable_irq_wake() work
for suspend to idle.  It does that by using a (different) wrapper handler for
all irqactions in the wakeup irq_descs and that wrapper handler takes care of
all the ugly details.  Again, all described in the changelog.

Patches [1/6], [4-5/6] are unmodified and the last one addes documentation.

Please review.

Rafael


             reply	other threads:[~2014-08-11 13:46 UTC|newest]

Thread overview: 34+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2014-08-11 13:56 Rafael J. Wysocki [this message]
2014-08-11 13:58 ` [PATCH 1/6 v2] PM / sleep: Mechanism for aborting system suspends unconditionally Rafael J. Wysocki
2014-08-11 13:59 ` [PATCH 2/6 v2] irq / PM: Make IRQF_NO_SUSPEND work with shared interrupts Rafael J. Wysocki
2014-08-11 14:00 ` [PATCH 3/6 v2] irq / PM: Make wakeup interrupts work with suspend-to-idle Rafael J. Wysocki
2014-08-11 14:01 ` [PATCH 4/6 v2] x86 / PM: Set IRQCHIP_SKIP_SET_WAKE for IOAPIC IRQ chip objects Rafael J. Wysocki
2014-08-11 14:02 ` [PATCH 5/6 v2] PCI / PM: Make PCIe PME interrupts wake up from suspend-to-idle Rafael J. Wysocki
2014-08-11 14:03 ` [PATCH 6/6 v2] irq / PM: Document rules related to system suspend and interrupts Rafael J. Wysocki
2014-08-26 23:46 ` [PATCH 0/5 v3] irq / PM: Suspend-to-idle wakeup interrupts Rafael J. Wysocki
2014-08-26 23:47   ` [PATCH 1/5 v3] PM / sleep: Mechanism for aborting system suspends unconditionally Rafael J. Wysocki
2014-08-26 23:49   ` [PATCH 2/5 v3] irq / PM: Make wakeup interrupts work with suspend-to-idle Rafael J. Wysocki
2014-08-27 20:32     ` Thomas Gleixner
2014-08-27 22:51       ` Rafael J. Wysocki
2014-08-28  9:23         ` Thomas Gleixner
2014-08-29  1:51           ` Rafael J. Wysocki
2014-08-26 23:50   ` [PATCH 3/5 v3] x86 / PM: Set IRQCHIP_SKIP_SET_WAKE for IOAPIC IRQ chip objects Rafael J. Wysocki
2014-08-26 23:51   ` [PATCH 4/5 v3] PCI / PM: Make PCIe PME interrupts wake up from suspend-to-idle Rafael J. Wysocki
2014-08-26 23:52   ` [PATCH 5/5 v3] irq / PM: Document rules related to system suspend and interrupts Rafael J. Wysocki
2014-08-28 22:44   ` [PATCH 0/5 v3] irq / PM: Suspend-to-idle wakeup interrupts Thomas Gleixner
2014-08-29  0:54     ` Rafael J. Wysocki
2014-08-29  1:09       ` Thomas Gleixner
2014-09-01 14:18   ` [PATCH 00/13] genirq / PM: Wakeup interrupts handling rework (related to suspend-to-idle) Rafael J. Wysocki
2014-09-01 14:19     ` [PATCH 01/13] PM / sleep: Mechanism for aborting system suspends unconditionally Rafael J. Wysocki
2014-09-01 14:20     ` [PATCH 02/13] genirq: Move suspend/resume logic into irq/pm code Rafael J. Wysocki
2014-09-01 14:21     ` [PATCH 03/13] genirq: Add sanity checks for PM options on shared interrupt lines Rafael J. Wysocki
2014-09-01 14:22     ` [PATCH 04/13] genirq: Make use of pm misfeature accounting Rafael J. Wysocki
2014-09-01 14:22     ` [PATCH 05/13] genirq: Move MASK_ON_SUSPEND handling into suspend_device_irqs() Rafael J. Wysocki
2014-09-01 14:23     ` [PATCH 06/13] genirq: Avoid double loop on suspend Rafael J. Wysocki
2014-09-01 14:24     ` [PATCH 07/13] genirq: Distangle edge handler entry Rafael J. Wysocki
2014-09-01 14:24     ` [PATCH 08/13] genirq: Create helper for flow handler entry check Rafael J. Wysocki
2014-09-01 14:26     ` [PATCH 09/13] genirq: Mark wakeup sources as armed on suspend Rafael J. Wysocki
2014-09-01 14:27     ` [PATCH 10/13] genirq: Simplify wakeup mechanism Rafael J. Wysocki
2014-09-01 14:28     ` [PATCH 11/13] x86 / PM: Set IRQCHIP_SKIP_SET_WAKE for IOAPIC IRQ chip objects Rafael J. Wysocki
2014-09-01 14:28     ` [PATCH 12/13] PCI / PM: Make PCIe PME interrupts wake up from suspend-to-idle Rafael J. Wysocki
2014-09-01 14:29     ` [PATCH 13/13] PM / genirq: Document rules related to system suspend and interrupts Rafael J. Wysocki

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