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| author |   Linus Torvalds <torvalds@linux-foundation.org> | 2018-10-23 15:15:20 +0100 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2018-10-23 15:15:20 +0100 |
| commit | cbbfb0ae2ca979222297062647ced653682a6cc7 (patch) | |
| tree | 15744f08287f776eb53c3fd1c97817f0e320875a /arch | |
| parent | Merge branch 'sched-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip (diff) | |
| parent | irq/matrix: Spread managed interrupts on allocation (diff) | |
| download | linux-dev-cbbfb0ae2ca979222297062647ced653682a6cc7.tar.xz linux-dev-cbbfb0ae2ca979222297062647ced653682a6cc7.zip | |
Merge branch 'x86-apic-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 apic updates from Ingo Molnar:
"Improve the spreading of managed IRQs at allocation time"
* 'x86-apic-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
irq/matrix: Spread managed interrupts on allocation
irq/matrix: Split out the CPU selection code into a helper
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/x86/kernel/apic/vector.c | 9 |
1 files changed, 4 insertions, 5 deletions
diff --git a/arch/x86/kernel/apic/vector.c b/arch/x86/kernel/apic/vector.c index 7654febd5102..652e7ffa9b9d 100644 --- a/arch/x86/kernel/apic/vector.c +++ b/arch/x86/kernel/apic/vector.c @@ -313,14 +313,13 @@ assign_managed_vector(struct irq_data *irqd, const struct cpumask *dest) struct apic_chip_data *apicd = apic_chip_data(irqd); int vector, cpu; - cpumask_and(vector_searchmask, vector_searchmask, affmsk); - cpu = cpumask_first(vector_searchmask); - if (cpu >= nr_cpu_ids) - return -EINVAL; + cpumask_and(vector_searchmask, dest, affmsk); + /* set_affinity might call here for nothing */ if (apicd->vector && cpumask_test_cpu(apicd->cpu, vector_searchmask)) return 0; - vector = irq_matrix_alloc_managed(vector_matrix, cpu); + vector = irq_matrix_alloc_managed(vector_matrix, vector_searchmask, + &cpu); trace_vector_alloc_managed(irqd->irq, vector, vector); if (vector < 0) return vector; |