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author | Linus Torvalds <torvalds@linux-foundation.org> | 2017-07-03 16:50:31 -0700 |
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committer | Linus Torvalds <torvalds@linux-foundation.org> | 2017-07-03 16:50:31 -0700 |
commit | 03ffbcdd7898c0b5299efeb9f18de927487ec1cf (patch) | |
tree | 0569222e4dc9db22049d7d8d15920cc085a194f6 /block/blk-mq-cpumap.c | |
parent | 1b044f1cfc65a7d90b209dfabd57e16d98b58c5b (diff) | |
parent | f9632de40ee0161e864bea8c1b017d957fd7312c (diff) | |
download | lwn-03ffbcdd7898c0b5299efeb9f18de927487ec1cf.tar.gz lwn-03ffbcdd7898c0b5299efeb9f18de927487ec1cf.zip |
Merge branch 'irq-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull irq updates from Thomas Gleixner:
"The irq department delivers:
- Expand the generic infrastructure handling the irq migration on CPU
hotplug and convert X86 over to it. (Thomas Gleixner)
Aside of consolidating code this is a preparatory change for:
- Finalizing the affinity management for multi-queue devices. The
main change here is to shut down interrupts which are affine to a
outgoing CPU and reenabling them when the CPU comes online again.
That avoids moving interrupts pointlessly around and breaking and
reestablishing affinities for no value. (Christoph Hellwig)
Note: This contains also the BLOCK-MQ and NVME changes which depend
on the rework of the irq core infrastructure. Jens acked them and
agreed that they should go with the irq changes.
- Consolidation of irq domain code (Marc Zyngier)
- State tracking consolidation in the core code (Jeffy Chen)
- Add debug infrastructure for hierarchical irq domains (Thomas
Gleixner)
- Infrastructure enhancement for managing generic interrupt chips via
devmem (Bartosz Golaszewski)
- Constification work all over the place (Tobias Klauser)
- Two new interrupt controller drivers for MVEBU (Thomas Petazzoni)
- The usual set of fixes, updates and enhancements all over the
place"
* 'irq-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (112 commits)
irqchip/or1k-pic: Fix interrupt acknowledgement
irqchip/irq-mvebu-gicp: Allocate enough memory for spi_bitmap
irqchip/gic-v3: Fix out-of-bound access in gic_set_affinity
nvme: Allocate queues for all possible CPUs
blk-mq: Create hctx for each present CPU
blk-mq: Include all present CPUs in the default queue mapping
genirq: Avoid unnecessary low level irq function calls
genirq: Set irq masked state when initializing irq_desc
genirq/timings: Add infrastructure for estimating the next interrupt arrival time
genirq/timings: Add infrastructure to track the interrupt timings
genirq/debugfs: Remove pointless NULL pointer check
irqchip/gic-v3-its: Don't assume GICv3 hardware supports 16bit INTID
irqchip/gic-v3-its: Add ACPI NUMA node mapping
irqchip/gic-v3-its-platform-msi: Make of_device_ids const
irqchip/gic-v3-its: Make of_device_ids const
irqchip/irq-mvebu-icu: Add new driver for Marvell ICU
irqchip/irq-mvebu-gicp: Add new driver for Marvell GICP
dt-bindings/interrupt-controller: Add DT binding for the Marvell ICU
genirq/irqdomain: Remove auto-recursive hierarchy support
irqchip/MSI: Use irq_domain_update_bus_token instead of an open coded access
...
Diffstat (limited to 'block/blk-mq-cpumap.c')
-rw-r--r-- | block/blk-mq-cpumap.c | 10 |
1 files changed, 4 insertions, 6 deletions
diff --git a/block/blk-mq-cpumap.c b/block/blk-mq-cpumap.c index 2cca4fc43f45..4891f042a22f 100644 --- a/block/blk-mq-cpumap.c +++ b/block/blk-mq-cpumap.c @@ -14,13 +14,12 @@ #include "blk.h" #include "blk-mq.h" -static int cpu_to_queue_index(unsigned int nr_queues, const int cpu, - const struct cpumask *online_mask) +static int cpu_to_queue_index(unsigned int nr_queues, const int cpu) { /* * Non online CPU will be mapped to queue index 0. */ - if (!cpumask_test_cpu(cpu, online_mask)) + if (!cpu_online(cpu)) return 0; return cpu % nr_queues; } @@ -40,7 +39,6 @@ int blk_mq_map_queues(struct blk_mq_tag_set *set) { unsigned int *map = set->mq_map; unsigned int nr_queues = set->nr_hw_queues; - const struct cpumask *online_mask = cpu_online_mask; unsigned int cpu, first_sibling; for_each_possible_cpu(cpu) { @@ -51,11 +49,11 @@ int blk_mq_map_queues(struct blk_mq_tag_set *set) * performace optimizations. */ if (cpu < nr_queues) { - map[cpu] = cpu_to_queue_index(nr_queues, cpu, online_mask); + map[cpu] = cpu_to_queue_index(nr_queues, cpu); } else { first_sibling = get_first_sibling(cpu); if (first_sibling == cpu) - map[cpu] = cpu_to_queue_index(nr_queues, cpu, online_mask); + map[cpu] = cpu_to_queue_index(nr_queues, cpu); else map[cpu] = map[first_sibling]; } |