From: Sagi Grimberg <sagi@grimberg.me>
To: Keith Busch <kbusch@kernel.org>, linux-nvme@lists.infradead.org
Cc: bigeasy@linutronix.de, hch@lst.de, tglx@linutronix.de,
ming.lei@redhat.com
Subject: Re: [PATCHv3 2/4] nvme/pci: Complete commands from primary handler
Date: Tue, 10 Dec 2019 12:00:07 -0800 [thread overview]
Message-ID: <6d55a705-6a43-5b47-166c-5d2b458fd6a5@grimberg.me> (raw)
In-Reply-To: <20191209175622.1964-3-kbusch@kernel.org>
> diff --git a/drivers/nvme/host/pci.c b/drivers/nvme/host/pci.c
> index a0138e3ca0b9..e415fadf7331 100644
> --- a/drivers/nvme/host/pci.c
> +++ b/drivers/nvme/host/pci.c
> @@ -1055,6 +1055,10 @@ static irqreturn_t nvme_irq_check(int irq, void *data)
> if (!nvme_cqe_pending(nvmeq))
> return IRQ_NONE;
>
> + nvme_irq(irq, data);
> + if (!nvme_cqe_pending(nvmeq))
> + return IRQ_HANDLED;
> +
Question Keith,
If I have say 24 (or more) devices with a queue mapped to a cpu, and we
happen to just reap in the primary handler for all devices, all the
time, are we safe from cpu lockup?
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next prev parent reply other threads:[~2019-12-10 20:00 UTC|newest]
Thread overview: 29+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-12-09 17:56 [PATCHv3 0/4] nvme pci interrupt handling improvements Keith Busch
2019-12-09 17:56 ` [PATCHv3 1/4] nvme/pci: Disable interrupts for threaded handler Keith Busch
2019-12-10 15:12 ` Daniel Wagner
2019-12-10 15:28 ` Sebastian Andrzej Siewior
2019-12-10 15:54 ` Keith Busch
2019-12-10 16:44 ` Daniel Wagner
2019-12-10 16:57 ` Keith Busch
2019-12-10 17:11 ` Daniel Wagner
2019-12-12 9:09 ` Christoph Hellwig
2019-12-12 15:53 ` Keith Busch
2019-12-09 17:56 ` [PATCHv3 2/4] nvme/pci: Complete commands from primary handler Keith Busch
2019-12-10 20:00 ` Sagi Grimberg [this message]
2019-12-10 20:25 ` Keith Busch
2019-12-10 21:14 ` Sagi Grimberg
2019-12-11 17:35 ` Keith Busch
2019-12-12 0:40 ` Sagi Grimberg
2019-12-12 1:02 ` Keith Busch
2019-12-12 22:55 ` Ming Lei
2019-12-12 23:30 ` Keith Busch
2019-12-13 0:52 ` Ming Lei
2019-12-12 9:14 ` Christoph Hellwig
2019-12-09 17:56 ` [PATCHv3 3/4] nvme/pci: Remove use_threaded_interrupts Keith Busch
2019-12-12 9:14 ` Christoph Hellwig
2019-12-12 15:45 ` Keith Busch
2019-12-18 7:29 ` Ming Lei
2019-12-18 15:50 ` Keith Busch
2019-12-19 1:10 ` Ming Lei
2019-12-09 17:56 ` [PATCHv3 4/4] nvme/pci: Poll threaded completions Keith Busch
2019-12-10 17:43 ` Daniel Wagner
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