From: Christoph Hellwig <hch@lst.de>
To: Thomas Gleixner <tglx@linutronix.de>, Jens Axboe <axboe@kernel.dk>
Cc: Keith Busch <keith.busch@intel.com>,
linux-nvme@lists.infradead.org, linux-block@vger.kernel.org,
linux-kernel@vger.kernel.org
Subject: [PATCH 1/8] genirq: allow assigning affinity to present but not online CPUs
Date: Sat, 3 Jun 2017 16:03:56 +0200 [thread overview]
Message-ID: <20170603140403.27379-2-hch@lst.de> (raw)
In-Reply-To: <20170603140403.27379-1-hch@lst.de>
This will allow us to spread MSI/MSI-X affinity over all present CPUs and
thus better deal with systems where cpus are take on and offline all the
time.
Signed-off-by: Christoph Hellwig <hch@lst.de>
---
kernel/irq/manage.c | 6 +++---
1 file changed, 3 insertions(+), 3 deletions(-)
diff --git a/kernel/irq/manage.c b/kernel/irq/manage.c
index 070be980c37a..5c25d4a5dc46 100644
--- a/kernel/irq/manage.c
+++ b/kernel/irq/manage.c
@@ -361,17 +361,17 @@ static int setup_affinity(struct irq_desc *desc, struct cpumask *mask)
if (irqd_affinity_is_managed(&desc->irq_data) ||
irqd_has_set(&desc->irq_data, IRQD_AFFINITY_SET)) {
if (cpumask_intersects(desc->irq_common_data.affinity,
- cpu_online_mask))
+ cpu_present_mask))
set = desc->irq_common_data.affinity;
else
irqd_clear(&desc->irq_data, IRQD_AFFINITY_SET);
}
- cpumask_and(mask, cpu_online_mask, set);
+ cpumask_and(mask, cpu_present_mask, set);
if (node != NUMA_NO_NODE) {
const struct cpumask *nodemask = cpumask_of_node(node);
- /* make sure at least one of the cpus in nodemask is online */
+ /* make sure at least one of the cpus in nodemask is present */
if (cpumask_intersects(mask, nodemask))
cpumask_and(mask, mask, nodemask);
}
--
2.11.0
next prev parent reply other threads:[~2017-06-03 14:04 UTC|newest]
Thread overview: 31+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-06-03 14:03 spread MSI(-X) vectors to all possible CPUs V2 Christoph Hellwig
2017-06-03 14:03 ` Christoph Hellwig [this message]
2017-06-04 15:14 ` [PATCH 1/8] genirq: allow assigning affinity to present but not online CPUs Sagi Grimberg
2017-06-17 23:21 ` Thomas Gleixner
2017-06-03 14:03 ` [PATCH 2/8] genirq: move pending helpers to internal.h Christoph Hellwig
2017-06-04 15:15 ` Sagi Grimberg
2017-06-03 14:03 ` [PATCH 3/8] genirq/affinity: factor out a irq_affinity_set helper Christoph Hellwig
2017-06-04 15:15 ` Sagi Grimberg
2017-06-16 10:23 ` Thomas Gleixner
2017-06-16 11:08 ` Thomas Gleixner
2017-06-16 12:00 ` Thomas Gleixner
2017-06-17 23:14 ` Thomas Gleixner
2017-06-03 14:03 ` [PATCH 4/8] genirq/affinity: assign vectors to all present CPUs Christoph Hellwig
2017-06-04 15:17 ` Sagi Grimberg
2017-06-22 17:10 ` [tip:irq/core] genirq/affinity: Assign " tip-bot for Christoph Hellwig
2017-06-03 14:04 ` [PATCH 5/8] genirq/affinity: update CPU affinity for CPU hotplug events Christoph Hellwig
2017-06-16 10:26 ` Thomas Gleixner
2017-06-16 10:29 ` Thomas Gleixner
2017-06-03 14:04 ` [PATCH 6/8] blk-mq: include all present CPUs in the default queue mapping Christoph Hellwig
2017-06-04 15:11 ` Sagi Grimberg
2017-06-03 14:04 ` [PATCH 7/8] blk-mq: create hctx for each present CPU Christoph Hellwig
2017-06-04 15:11 ` Sagi Grimberg
2017-06-07 9:10 ` Ming Lei
2017-06-07 19:06 ` Christoph Hellwig
2017-06-08 2:28 ` Ming Lei
2017-06-07 22:04 ` Omar Sandoval
2017-06-08 6:58 ` Christoph Hellwig
2017-06-03 14:04 ` [PATCH 8/8] nvme: allocate queues for all possible CPUs Christoph Hellwig
2017-06-04 15:13 ` Sagi Grimberg
2017-06-16 6:48 ` spread MSI(-X) vectors to all possible CPUs V2 Christoph Hellwig
2017-06-16 7:28 ` Thomas Gleixner
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