From: Christoph Hellwig <hch@lst.de> To: tglx@linutronix.de, linux-block@vger.kernel.org, linux-pci@vger.kernel.org Cc: linux-nvme@lists.infradead.org, linux-kernel@vger.kernel.org Subject: [PATCH 4/8] genirq: add a helper to program the pre-set affinity mask into the controller Date: Fri, 15 Apr 2016 18:35:48 -0700 [thread overview] Message-ID: <1460770552-31260-5-git-send-email-hch@lst.de> (raw) In-Reply-To: <1460770552-31260-1-git-send-email-hch@lst.de> Signed-off-by: Christoph Hellwig <hch@lst.de> --- include/linux/interrupt.h | 2 ++ kernel/irq/manage.c | 14 ++++++++++++++ 2 files changed, 16 insertions(+) diff --git a/include/linux/interrupt.h b/include/linux/interrupt.h index 67bc1e1f..ae345da 100644 --- a/include/linux/interrupt.h +++ b/include/linux/interrupt.h @@ -713,4 +713,6 @@ extern char __softirqentry_text_end[]; #define __softirq_entry #endif +void irq_program_affinity(unsigned int irq); + #endif diff --git a/kernel/irq/manage.c b/kernel/irq/manage.c index cc1cc64..02552a4 100644 --- a/kernel/irq/manage.c +++ b/kernel/irq/manage.c @@ -240,6 +240,20 @@ int __irq_set_affinity(unsigned int irq, const struct cpumask *mask, bool force) return ret; } +void irq_program_affinity(unsigned int irq) +{ + struct irq_desc *desc = irq_to_desc(irq); + struct irq_data *data = irq_desc_get_irq_data(desc); + unsigned long flags; + + if (WARN_ON_ONCE(!desc)) + return; + + raw_spin_lock_irqsave(&desc->lock, flags); + irq_set_affinity_locked(data, desc->irq_common_data.affinity, false); + raw_spin_unlock_irqrestore(&desc->lock, flags); +} + int irq_set_affinity_hint(unsigned int irq, const struct cpumask *m) { unsigned long flags; -- 2.1.4
WARNING: multiple messages have this Message-ID (diff)
From: hch@lst.de (Christoph Hellwig) Subject: [PATCH 4/8] genirq: add a helper to program the pre-set affinity mask into the controller Date: Fri, 15 Apr 2016 18:35:48 -0700 [thread overview] Message-ID: <1460770552-31260-5-git-send-email-hch@lst.de> (raw) In-Reply-To: <1460770552-31260-1-git-send-email-hch@lst.de> Signed-off-by: Christoph Hellwig <hch at lst.de> --- include/linux/interrupt.h | 2 ++ kernel/irq/manage.c | 14 ++++++++++++++ 2 files changed, 16 insertions(+) diff --git a/include/linux/interrupt.h b/include/linux/interrupt.h index 67bc1e1f..ae345da 100644 --- a/include/linux/interrupt.h +++ b/include/linux/interrupt.h @@ -713,4 +713,6 @@ extern char __softirqentry_text_end[]; #define __softirq_entry #endif +void irq_program_affinity(unsigned int irq); + #endif diff --git a/kernel/irq/manage.c b/kernel/irq/manage.c index cc1cc64..02552a4 100644 --- a/kernel/irq/manage.c +++ b/kernel/irq/manage.c @@ -240,6 +240,20 @@ int __irq_set_affinity(unsigned int irq, const struct cpumask *mask, bool force) return ret; } +void irq_program_affinity(unsigned int irq) +{ + struct irq_desc *desc = irq_to_desc(irq); + struct irq_data *data = irq_desc_get_irq_data(desc); + unsigned long flags; + + if (WARN_ON_ONCE(!desc)) + return; + + raw_spin_lock_irqsave(&desc->lock, flags); + irq_set_affinity_locked(data, desc->irq_common_data.affinity, false); + raw_spin_unlock_irqrestore(&desc->lock, flags); +} + int irq_set_affinity_hint(unsigned int irq, const struct cpumask *m) { unsigned long flags; -- 2.1.4
next prev parent reply other threads:[~2016-04-16 1:35 UTC|newest] Thread overview: 34+ messages / expand[flat|nested] mbox.gz Atom feed top 2016-04-16 1:35 RFC: automatic interrupt affinity for MSI/MSI-X capable devices Christoph Hellwig 2016-04-16 1:35 ` Christoph Hellwig 2016-04-16 1:35 ` [PATCH 1/8] device: Add irq affinity hint cpumask pointer Christoph Hellwig 2016-04-16 1:35 ` Christoph Hellwig 2016-04-16 1:35 ` [PATCH 2/8] genirq: Make use of dev->irq_affinity Christoph Hellwig 2016-04-16 1:35 ` Christoph Hellwig 2016-04-16 1:35 ` [PATCH 3/8] genirq: add a helper spread an affinity mask for MSI/MSI-X vectors Christoph Hellwig 2016-04-16 1:35 ` Christoph Hellwig 2016-04-16 1:35 ` Christoph Hellwig [this message] 2016-04-16 1:35 ` [PATCH 4/8] genirq: add a helper to program the pre-set affinity mask into the controller Christoph Hellwig 2016-04-16 1:35 ` [PATCH 5/8] blk-mq: allow the driver to pass in an affinity mask Christoph Hellwig 2016-04-16 1:35 ` Christoph Hellwig 2016-04-16 1:35 ` [PATCH 6/8] pci: provide sensible irq vector alloc/free routines Christoph Hellwig 2016-04-16 1:35 ` Christoph Hellwig 2016-04-29 21:16 ` Bjorn Helgaas 2016-04-29 21:16 ` Bjorn Helgaas 2016-05-01 18:01 ` Christoph Hellwig 2016-05-01 18:01 ` Christoph Hellwig 2016-05-02 13:11 ` Bjorn Helgaas 2016-05-02 13:11 ` Bjorn Helgaas 2016-05-02 14:42 ` Christoph Hellwig 2016-05-02 14:42 ` Christoph Hellwig 2016-05-02 15:29 ` Bjorn Helgaas 2016-05-02 15:29 ` Bjorn Helgaas 2016-05-03 21:19 ` Christoph Hellwig 2016-05-03 21:19 ` Christoph Hellwig 2016-05-03 21:37 ` Bjorn Helgaas 2016-05-03 21:37 ` Bjorn Helgaas 2016-04-16 1:35 ` [PATCH 7/8] pci: spread interrupt vectors in pci_alloc_irq_vectors Christoph Hellwig 2016-04-16 1:35 ` Christoph Hellwig 2016-04-18 8:30 ` Thomas Gleixner 2016-04-18 8:30 ` Thomas Gleixner 2016-04-16 1:35 ` [PATCH 8/8] nvme: switch to use pci_alloc_irq_vectors Christoph Hellwig 2016-04-16 1:35 ` Christoph Hellwig
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